diff options
| author | Romain Perier <romain.perier@opensource.viveris.fr> | 2019-01-11 15:52:15 +0100 |
|---|---|---|
| committer | Romain Perier <romain.perier@opensource.viveris.fr> | 2019-01-11 17:44:15 +0100 |
| commit | fe5142170f582165349d8b4e1b4efa83b628b25e (patch) | |
| tree | d6a7e3f96fe695ccf637407f04cd23028260470c | |
| parent | d31776d28df358119e1c1caec843cc2e6ca1bd8a (diff) | |
| download | linux-debian-fe5142170f582165349d8b4e1b4efa83b628b25e.tar.gz | |
[rt] Update to 4.19.13-rt10
262 files changed, 604 insertions, 387 deletions
diff --git a/debian/changelog b/debian/changelog index a545988d1..f7cade43d 100644 --- a/debian/changelog +++ b/debian/changelog @@ -23,6 +23,9 @@ linux (4.19.13-2) UNRELEASED; urgency=medium * [mipsel, mips64el] Enable DRM_AST and FB_SM750 for loongson-3 install ast and sm750fb to loongson-3's fb-modules + [ Romain Perier ] + * [rt] Update to 4.19.13-rt10 + -- John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Sun, 30 Dec 2018 10:30:57 +0100 linux (4.19.13-1) unstable; urgency=medium diff --git a/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch b/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch index af86a8746..8c539104d 100644 --- a/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch +++ b/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:18 +0200 Subject: [PATCH 1/7] ARM: at91: add TCB registers definitions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Add registers and bits definitions for the timer counter blocks found on Atmel ARM SoCs. diff --git a/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch b/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch index 21836f3d7..b07bfe7d5 100644 --- a/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch +++ b/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch @@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 28 May 2018 15:24:20 +0200 Subject: [PATCH 1/4] Split IRQ-off and zone->lock while freeing pages from PCP list #1 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Split the IRQ-off section while accessing the PCP list from zone->lock while freeing pages. diff --git a/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch b/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch index f73cb8c81..b5fbd9ee6 100644 --- a/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch +++ b/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch @@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 28 May 2018 15:24:21 +0200 Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP list #2 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Split the IRQ-off section while accessing the PCP list from zone->lock while freeing pages. diff --git a/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch b/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch index 49a920887..a07e0ecb5 100644 --- a/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch +++ b/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch @@ -2,7 +2,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:19 +0200 Subject: [PATCH 2/7] clocksource/drivers: Add a new driver for the Atmel ARM TC blocks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Add a driver for the Atmel Timer Counter Blocks. This driver provides a clocksource and two clockevent devices. diff --git a/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch b/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch index 5e1223037..bbc368958 100644 --- a/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch +++ b/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch @@ -2,7 +2,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:20 +0200 Subject: [PATCH 3/7] clocksource/drivers: timer-atmel-tcb: add clockevent device on separate channel -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Add an other clockevent device that uses a separate TCB channel when available. diff --git a/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch b/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch index 0b9db8b14..d8819291d 100644 --- a/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch +++ b/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 28 May 2018 15:24:22 +0200 Subject: [PATCH 3/4] mm/SLxB: change list_lock to raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The list_lock is used with used with IRQs off on RT. Make it a raw_spinlock_t otherwise the interrupts won't be disabled on -RT. The locking rules remain diff --git a/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch b/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch index dc49cbfb7..a1cd9486a 100644 --- a/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch +++ b/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:21 +0200 Subject: [PATCH 4/7] clocksource/drivers: atmel-pit: make option silent -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz To conform with the other option, make the ATMEL_PIT option silent so it can be selected from the platform diff --git a/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch b/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch index 2649953e1..768d83a6b 100644 --- a/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch +++ b/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 21 Jun 2018 17:29:19 +0200 Subject: [PATCH 4/4] mm/SLUB: delay giving back empty slubs to IRQ enabled regions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz __free_slab() is invoked with disabled interrupts which increases the irq-off time while __free_pages() is doing the work. diff --git a/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch b/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch index 8523f0d4e..a4d6b3342 100644 --- a/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch +++ b/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:22 +0200 Subject: [PATCH 5/7] ARM: at91: Implement clocksource selection -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Allow selecting and unselecting the PIT clocksource driver so it doesn't have to be compile when unused. diff --git a/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch b/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch index 7a5b36e60..c86827ba7 100644 --- a/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch +++ b/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:23 +0200 Subject: [PATCH 6/7] ARM: configs: at91: use new TCB timer driver -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to timer-atmel-tcb. diff --git a/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch b/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch index 00e106ba3..0a3cef5c5 100644 --- a/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch +++ b/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com> Date: Thu, 13 Sep 2018 13:30:24 +0200 Subject: [PATCH 7/7] ARM: configs: at91: unselect PIT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The PIT is not required anymore to successfully boot and may actually harm in case preempt-rt is used because the PIT interrupt is shared. diff --git a/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch b/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch index cdea1dec1..5ffefdc10 100644 --- a/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch +++ b/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch @@ -1,7 +1,7 @@ From: "Yadi.hu" <yadi.hu@windriver.com> Date: Wed, 10 Dec 2014 10:32:09 +0800 Subject: ARM: enable irq in translation/section permission fault handlers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Probably happens on all ARM, with CONFIG_PREEMPT_RT_FULL diff --git a/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch b/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch index e3fd42650..20036c5c7 100644 --- a/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch +++ b/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch @@ -4,7 +4,7 @@ Subject: [PATCH] Drivers: hv: vmbus: include header for get_irq_regs() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On !RT the header file get_irq_regs() gets pulled in via other header files. On RT it does not and the build fails: diff --git a/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch b/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch index a87e8e45d..6563cd8b5 100644 --- a/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch +++ b/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch @@ -1,7 +1,7 @@ From: Paul E. McKenney <paulmck@linux.ibm.com> Date: Mon, 29 Oct 2018 11:53:01 +0100 Subject: [PATCH] EXP rcu: Revert expedited GP parallelization cleverness -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz (Commit 258ba8e089db23f760139266c232f01bad73f85c from linux-rcu) diff --git a/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch b/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch index 7145898b4..cc0ec0e7b 100644 --- a/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch +++ b/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 21 Mar 2013 19:01:05 +0100 Subject: printk: Drop the logbuf_lock more often -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The lock is hold with irgs off. The latency drops 500us+ on my arm bugs with a "full" buffer after executing "dmesg" on the shell. diff --git a/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch b/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch index 48b2e4af0..34b9bfb5e 100644 --- a/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch +++ b/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch @@ -1,7 +1,7 @@ From: Josh Cartwright <joshc@ni.com> Date: Thu, 11 Feb 2016 11:54:01 -0600 Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating the vgic and timer states to prevent the calling task from migrating to diff --git a/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch b/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch index 44c24d227..ef9647c81 100644 --- a/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch +++ b/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch @@ -5,7 +5,7 @@ Cc: Anna Schumaker <anna.schumaker@netapp.com>, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de Subject: NFSv4: replace seqcount_t with a seqlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me because it maps to preempt_disable() in -RT which I can't have at this diff --git a/debian/patches-rt/add_migrate_disable.patch b/debian/patches-rt/add_migrate_disable.patch index 62bad8bae..0f48a45d9 100644 --- a/debian/patches-rt/add_migrate_disable.patch +++ b/debian/patches-rt/add_migrate_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat, 27 May 2017 19:02:06 +0200 Subject: kernel/sched/core: add migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz --- include/linux/preempt.h | 23 ++++++++ @@ -80,7 +80,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4 * boot command line: --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -1007,7 +1007,15 @@ void set_cpus_allowed_common(struct task +@@ -1006,7 +1006,15 @@ void set_cpus_allowed_common(struct task p->nr_cpus_allowed = cpumask_weight(new_mask); } @@ -97,7 +97,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4 { struct rq *rq = task_rq(p); bool queued, running; -@@ -1036,6 +1044,20 @@ void do_set_cpus_allowed(struct task_str +@@ -1035,6 +1043,20 @@ void do_set_cpus_allowed(struct task_str set_curr_task(rq, p); } @@ -118,7 +118,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4 /* * Change a given task's CPU affinity. Migrate the thread to a * proper CPU and schedule it away if the CPU it's executing on -@@ -1094,9 +1116,16 @@ static int __set_cpus_allowed_ptr(struct +@@ -1093,9 +1115,16 @@ static int __set_cpus_allowed_ptr(struct } /* Can the task run on the task's current CPU? If so, we're done */ @@ -136,7 +136,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4 dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask); if (task_running(rq, p) || p->state == TASK_WAKING) { struct migration_arg arg = { p, dest_cpu }; -@@ -7059,3 +7088,100 @@ const u32 sched_prio_to_wmult[40] = { +@@ -7058,3 +7087,100 @@ const u32 sched_prio_to_wmult[40] = { }; #undef CREATE_TRACE_POINTS diff --git a/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch b/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch index ed9b86609..98692034a 100644 --- a/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch +++ b/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 11 Oct 2017 17:43:49 +0200 Subject: apparmor: use a locallock instead preempt_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz get_buffers() disables preemption which acts as a lock for the per-CPU variable. Since we can't disable preemption here on RT, a local_lock is diff --git a/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch b/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch index 903912e4f..633bc0965 100644 --- a/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch +++ b/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch @@ -1,7 +1,7 @@ From: Anders Roxell <anders.roxell@linaro.org> Date: Thu, 14 May 2015 17:52:17 +0200 Subject: arch/arm64: Add lazy preempt support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz arm64 is missing support for PREEMPT_RT. The main feature which is lacking is support for lazy preemption. The arch-specific entry code, diff --git a/debian/patches-rt/arm-convert-boot-lock-to-raw.patch b/debian/patches-rt/arm-convert-boot-lock-to-raw.patch index 2eb4095f4..1d2d61bcf 100644 --- a/debian/patches-rt/arm-convert-boot-lock-to-raw.patch +++ b/debian/patches-rt/arm-convert-boot-lock-to-raw.patch @@ -1,7 +1,7 @@ From: Frank Rowand <frank.rowand@am.sony.com> Date: Mon, 19 Sep 2011 14:51:14 -0700 Subject: arm: Convert arm boot_lock to raw -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The arm boot_lock is used by the secondary processor startup code. The locking task is the idle thread, which has idle->sched_class == &idle_sched_class. diff --git a/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch b/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch index cf77e7dce..d2dece458 100644 --- a/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch +++ b/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 1 Dec 2017 10:42:03 +0100 Subject: [PATCH] arm*: disable NEON in kernel mode -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz NEON in kernel mode is used by the crypto algorithms and raid6 code. While the raid6 code looks okay, the crypto algorithms do not: NEON diff --git a/debian/patches-rt/arm-enable-highmem-for-rt.patch b/debian/patches-rt/arm-enable-highmem-for-rt.patch index 5419b019c..2b62061c1 100644 --- a/debian/patches-rt/arm-enable-highmem-for-rt.patch +++ b/debian/patches-rt/arm-enable-highmem-for-rt.patch @@ -1,7 +1,7 @@ Subject: arm: Enable highmem for rt From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 13 Feb 2013 11:03:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz fixup highmem for ARM. diff --git a/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch b/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch index ebf3b9c5b..1118be544 100644 --- a/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch +++ b/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 11 Mar 2013 21:37:27 +0100 Subject: arm/highmem: Flush tlb on unmap -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The tlb should be flushed on unmap and thus make the mapping entry invalid. This is only done in the non-debug case which does not look diff --git a/debian/patches-rt/arm-include-definition-for-cpumask_t.patch b/debian/patches-rt/arm-include-definition-for-cpumask_t.patch index 1ceac3bb0..60c769fcf 100644 --- a/debian/patches-rt/arm-include-definition-for-cpumask_t.patch +++ b/debian/patches-rt/arm-include-definition-for-cpumask_t.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 22 Dec 2016 17:28:33 +0100 Subject: [PATCH] arm: include definition for cpumask_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz This definition gets pulled in by other files. With the (later) split of RCU and spinlock.h it won't compile anymore. diff --git a/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch b/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch index 335dad2f3..325c28ee2 100644 --- a/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch +++ b/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch @@ -1,7 +1,7 @@ From: Yang Shi <yang.shi@linaro.org> Date: Thu, 10 Nov 2016 16:17:55 -0800 Subject: [PATCH] arm: kprobe: replace patch_lock to raw lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When running kprobe on -rt kernel, the below bug is caught: diff --git a/debian/patches-rt/arm-preempt-lazy-support.patch b/debian/patches-rt/arm-preempt-lazy-support.patch index eac5e556a..742e3fe51 100644 --- a/debian/patches-rt/arm-preempt-lazy-support.patch +++ b/debian/patches-rt/arm-preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: arm: Add support for lazy preemption From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 31 Oct 2012 12:04:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Implement the arm pieces for lazy preempt. diff --git a/debian/patches-rt/arm-unwind-use_raw_lock.patch b/debian/patches-rt/arm-unwind-use_raw_lock.patch index 4f9216e5d..7f0064b55 100644 --- a/debian/patches-rt/arm-unwind-use_raw_lock.patch +++ b/debian/patches-rt/arm-unwind-use_raw_lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 20 Sep 2013 14:31:54 +0200 Subject: arm/unwind: use a raw_spin_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Mostly unwind is done with irqs enabled however SLUB may call it with irqs disabled while creating a new SLUB cache. diff --git a/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch b/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch index 979eb811b..c270895e8 100644 --- a/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch +++ b/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 26 Jul 2018 09:13:42 +0200 Subject: [PATCH] arm64: KVM: compute_layout before altenates are applied -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz compute_layout() is invoked as part of an alternative fixup under stop_machine() and needs a sleeping lock as part of get_random_long(). diff --git a/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch b/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch index 233c8b0b0..2913f77ee 100644 --- a/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch +++ b/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 25 Jul 2018 14:02:38 +0200 Subject: [PATCH] arm64: fpsimd: use preemp_disable in addition to local_bh_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In v4.16-RT I noticed a number of warnings from task_fpsimd_load(). The code disables BH and expects that it is not preemptible. On -RT the diff --git a/debian/patches-rt/at91_dont_enable_disable_clock.patch b/debian/patches-rt/at91_dont_enable_disable_clock.patch index 753326e82..21f5ce7e2 100644 --- a/debian/patches-rt/at91_dont_enable_disable_clock.patch +++ b/debian/patches-rt/at91_dont_enable_disable_clock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 09 Mar 2016 10:51:06 +0100 Subject: arm: at91: do not disable/enable clocks in a row -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Currently the driver will disable the clock and enable it one line later if it is switching from periodic mode into one shot. diff --git a/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch b/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch index 8852018c6..50487d577 100644 --- a/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch +++ b/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 13 Mar 2018 13:49:16 +0100 Subject: [PATCH] block: blk-mq: move blk_queue_usage_counter_release() into process context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz | BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 | in_atomic(): 1, irqs_disabled(): 0, pid: 255, name: kworker/u257:6 diff --git a/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch b/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch index 601e878dc..a911b24a2 100644 --- a/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch +++ b/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 29 Jan 2015 15:10:08 +0100 Subject: block/mq: don't complete requests via IPI -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The IPI runs in hardirq context and there are sleeping locks. This patch moves the completion into a workqueue. diff --git a/debian/patches-rt/block-mq-drop-preempt-disable.patch b/debian/patches-rt/block-mq-drop-preempt-disable.patch index 628cfdd1a..b2ae09d6e 100644 --- a/debian/patches-rt/block-mq-drop-preempt-disable.patch +++ b/debian/patches-rt/block-mq-drop-preempt-disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: block/mq: do not invoke preempt_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz preempt_disable() and get_cpu() don't play well together with the sleeping locks it tries to allocate later. diff --git a/debian/patches-rt/block-mq-use-cpu_light.patch b/debian/patches-rt/block-mq-use-cpu_light.patch index 79942b00a..8627e49ec 100644 --- a/debian/patches-rt/block-mq-use-cpu_light.patch +++ b/debian/patches-rt/block-mq-use-cpu_light.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 9 Apr 2014 10:37:23 +0200 Subject: block: mq: use cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz there is a might sleep splat because get_cpu() disables preemption and later we grab a lock. As a workaround for this we use get_cpu_light(). diff --git a/debian/patches-rt/block-use-cpu-chill.patch b/debian/patches-rt/block-use-cpu-chill.patch index bb12a3804..cb26f8996 100644 --- a/debian/patches-rt/block-use-cpu-chill.patch +++ b/debian/patches-rt/block-use-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: block: Use cpu_chill() for retry loops From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 20 Dec 2012 18:28:26 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Steven also observed a live lock when there was a diff --git a/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch b/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch index bc5a7207f..a0efbf212 100644 --- a/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch +++ b/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 3 Jul 2018 18:19:48 +0200 Subject: [PATCH] cgroup: use irqsave in cgroup_rstat_flush_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock either with spin_lock_irq() or spin_lock_irqsave(). diff --git a/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch b/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch index 5c17a52de..264cc5ce6 100644 --- a/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch +++ b/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 13 Feb 2015 15:52:24 +0100 Subject: cgroups: use simple wait in css_release() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz To avoid: |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 diff --git a/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch b/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch index ee74416d9..3c1e8cb59 100644 --- a/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch +++ b/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch @@ -1,7 +1,7 @@ From: Benedikt Spranger <b.spranger@linutronix.de> Date: Mon, 8 Mar 2010 18:57:04 +0100 Subject: clocksource: TCLIB: Allow higher clock rates for clock events -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz As default the TCLIB uses the 32KiHz base clock rate for clock events. Add a compile time selection to allow higher clock resulution. diff --git a/debian/patches-rt/completion-use-simple-wait-queues.patch b/debian/patches-rt/completion-use-simple-wait-queues.patch index f05c2eb4b..7c4cfbf2c 100644 --- a/debian/patches-rt/completion-use-simple-wait-queues.patch +++ b/debian/patches-rt/completion-use-simple-wait-queues.patch @@ -1,7 +1,7 @@ Subject: completion: Use simple wait queues From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 11 Jan 2013 11:23:51 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Completions have no long lasting callbacks and therefor do not need the complex waitqueue variant. Use simple waitqueues which reduces the @@ -300,7 +300,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> EXPORT_SYMBOL(completion_done); --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -7108,7 +7108,10 @@ void migrate_disable(void) +@@ -7107,7 +7107,10 @@ void migrate_disable(void) return; } #ifdef CONFIG_SCHED_DEBUG @@ -312,7 +312,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #endif if (p->migrate_disable) { -@@ -7138,7 +7141,10 @@ void migrate_enable(void) +@@ -7137,7 +7140,10 @@ void migrate_enable(void) } #ifdef CONFIG_SCHED_DEBUG diff --git a/debian/patches-rt/cond-resched-lock-rt-tweak.patch b/debian/patches-rt/cond-resched-lock-rt-tweak.patch index 7c7b38abf..3a4631049 100644 --- a/debian/patches-rt/cond-resched-lock-rt-tweak.patch +++ b/debian/patches-rt/cond-resched-lock-rt-tweak.patch @@ -1,7 +1,7 @@ Subject: sched: Use the proper LOCK_OFFSET for cond_resched() From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 17 Jul 2011 22:51:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz RT does not increment preempt count when a 'sleeping' spinlock is locked. Update PREEMPT_LOCK_OFFSET for that case. diff --git a/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch b/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch index 5db7656a1..d3d7960f2 100644 --- a/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch +++ b/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Sun, 16 Oct 2016 05:11:54 +0200 Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931 |in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep diff --git a/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch b/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch index 20c3258a5..04e434c17 100644 --- a/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch +++ b/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch @@ -1,7 +1,7 @@ Subject: cpu/hotplug: Implement CPU pinning From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 19 Jul 2017 17:31:20 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- diff --git a/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch b/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch index aa34fefae..85fda384f 100644 --- a/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch +++ b/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 9 Apr 2015 15:23:01 +0200 Subject: cpufreq: drop K8's driver from beeing selected -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Ralf posted a picture of a backtrace from diff --git a/debian/patches-rt/cpumask-disable-offstack-on-rt.patch b/debian/patches-rt/cpumask-disable-offstack-on-rt.patch index 1a7a8a1e6..000cad828 100644 --- a/debian/patches-rt/cpumask-disable-offstack-on-rt.patch +++ b/debian/patches-rt/cpumask-disable-offstack-on-rt.patch @@ -1,7 +1,7 @@ Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 14 Dec 2011 01:03:49 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There are "valid" GFP_ATOMIC allocations such as diff --git a/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch b/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch index d57432828..8c3b226a7 100644 --- a/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch +++ b/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Mike Galbraith <efault@gmx.de> Date: Sun, 8 Jan 2017 09:32:25 +0100 Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The two commits below add up to a cpuset might_sleep() splat for RT: diff --git a/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch b/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch index fc79bf46b..4a90702da 100644 --- a/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch +++ b/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 21 Feb 2014 17:24:04 +0100 Subject: crypto: Reduce preempt disabled regions, more algos -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Don Estabrook reported | kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100() diff --git a/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch b/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch index 298900dcb..e5a205875 100644 --- a/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch +++ b/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch @@ -4,7 +4,7 @@ Subject: [PATCH] crypto: caam/qi - simplify CGR allocation, freeing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz [Upstream commit 29e83c757006fd751966bdc53392bb22d74179c6] diff --git a/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch b/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch index 2897d8599..044bbf57e 100644 --- a/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch +++ b/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 26 Jul 2018 18:52:00 +0200 Subject: [PATCH] crypto: cryptd - add a lock instead preempt_disable/local_bh_disable -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz cryptd has a per-CPU lock which protected with local_bh_disable() and preempt_disable(). diff --git a/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch b/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch index 0c43cf70e..9426b53d4 100644 --- a/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch +++ b/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch @@ -4,7 +4,7 @@ Subject: [PATCH] crypto: limit more FPU-enabled sections MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Those crypto drivers use SSE/AVX/… for their crypto work and in order to do so in kernel they need to enable the "FPU" in kernel mode which diff --git a/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch b/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch index 38aa070c1..4476f8358 100644 --- a/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch +++ b/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de> Date: Wed, 11 Jul 2018 17:14:47 +0200 Subject: [PATCH] crypto: scompress - serialize RT percpu scratch buffer access with a local lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz | BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974 | in_atomic(): 1, irqs_disabled(): 0, pid: 1401, name: cryptomgr_test diff --git a/debian/patches-rt/debugobjects-rt.patch b/debian/patches-rt/debugobjects-rt.patch index 9c405a2a7..4c4cc7a15 100644 --- a/debian/patches-rt/debugobjects-rt.patch +++ b/debian/patches-rt/debugobjects-rt.patch @@ -1,7 +1,7 @@ Subject: debugobjects: Make RT aware From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 17 Jul 2011 21:41:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Avoid filling the pool / allocating memory with irqs off(). diff --git a/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch b/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch index 035403867..c82ece84d 100644 --- a/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch +++ b/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 27 Mar 2018 16:24:15 +0200 Subject: [PATCH] dm rq: remove BUG_ON(!irqs_disabled) check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In commit 052189a2ec95 ("dm: remove superfluous irq disablement in dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a diff --git a/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch b/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch index 2c15080ea..53c98b38b 100644 --- a/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch +++ b/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Thu, 31 Mar 2016 04:08:28 +0200 Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex for -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz They're nondeterministic, and lead to ___might_sleep() splats in -rt. OTOH, they're a lot less wasteful than an rtmutex per page. diff --git a/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch b/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch index dbafe2ec2..3dede4ddb 100644 --- a/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch +++ b/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch @@ -1,7 +1,7 @@ Subject: tty/serial/omap: Make the locking RT aware From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 28 Jul 2011 13:32:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The lock is a sleeping lock and local_irq_save() is not the optimsation we are looking for. Redo it to make it work on -RT and diff --git a/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch b/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch index 997652bf4..62ed7c3ce 100644 --- a/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch +++ b/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch @@ -1,7 +1,7 @@ Subject: tty/serial/pl011: Make the locking work on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 08 Jan 2013 21:36:51 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The lock is a sleeping lock and local_irq_save() is not the optimsation we are looking for. Redo it to make it work on -RT and non-RT. diff --git a/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch b/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch index 05eda911e..2763cdca8 100644 --- a/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch +++ b/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Thu, 20 Oct 2016 11:15:22 +0200 Subject: [PATCH] drivers/zram: Don't disable preemption in zcomp_stream_get/put() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In v4.7, the driver switched to percpu compression streams, disabling preemption via get/put_cpu_ptr(). Use a per-zcomp_strm lock here. We diff --git a/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch b/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch index 6f5891c2b..716178e63 100644 --- a/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch +++ b/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de> Date: Wed, 23 Aug 2017 11:57:29 +0200 Subject: [PATCH] drivers/zram: fix zcomp_stream_get() smp_processor_id() use in preemptible code -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Use get_local_ptr() instead this_cpu_ptr() to avoid a warning regarding smp_processor_id() in preemptible code. diff --git a/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch b/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch index e8234ece3..3673402b6 100644 --- a/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch +++ b/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 6 Dec 2018 09:52:20 +0100 Subject: [PATCH] drm/i915: disable tracing on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Luca Abeni reported this: | BUG: scheduling while atomic: kworker/u8:2/15203/0x00000003 diff --git a/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch b/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch index 3b85ee401..502c3a8fb 100644 --- a/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch +++ b/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 19 Dec 2018 10:47:02 +0100 Subject: [PATCH] drm/i915: skip DRM_I915_LOW_LEVEL_TRACEPOINTS with NOTRACE -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The order of the header files is important. If this header file is included after tracepoint.h was included then the NOTRACE here becomes a diff --git a/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch b/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch index 71fd69912..9834daaf9 100644 --- a/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch +++ b/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch @@ -1,7 +1,7 @@ Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end() From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Sat, 27 Feb 2016 09:01:42 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz [ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918 diff --git a/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch b/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch index 5b54b22ee..22754acbc 100644 --- a/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch +++ b/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch @@ -1,7 +1,7 @@ Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Sat, 27 Feb 2016 08:09:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz DRM folks identified the spots, so use them. diff --git a/debian/patches-rt/efi-Allow-efi-runtime.patch b/debian/patches-rt/efi-Allow-efi-runtime.patch index 3b6dd6110..bf063a066 100644 --- a/debian/patches-rt/efi-Allow-efi-runtime.patch +++ b/debian/patches-rt/efi-Allow-efi-runtime.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 26 Jul 2018 15:06:10 +0200 Subject: [PATCH] efi: Allow efi=runtime -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In case the option "efi=noruntime" is default at built-time, the user could overwrite its sate by `efi=runtime' and allow it again. diff --git a/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch b/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch index df4071354..08ceb32ec 100644 --- a/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch +++ b/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 26 Jul 2018 15:03:16 +0200 Subject: [PATCH] efi: Disable runtime services on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Based on meassurements the EFI functions get_variable / get_next_variable take up to 2us which looks okay. diff --git a/debian/patches-rt/epoll-use-get-cpu-light.patch b/debian/patches-rt/epoll-use-get-cpu-light.patch index 4426dffe2..75636dbe6 100644 --- a/debian/patches-rt/epoll-use-get-cpu-light.patch +++ b/debian/patches-rt/epoll-use-get-cpu-light.patch @@ -1,7 +1,7 @@ Subject: fs/epoll: Do not disable preemption on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 08 Jul 2011 16:35:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz ep_call_nested() takes a sleeping lock so we can't disable preemption. The light version is enough since ep_call_nested() doesn't mind beeing diff --git a/debian/patches-rt/fs-aio-simple-simple-work.patch b/debian/patches-rt/fs-aio-simple-simple-work.patch index aed5172d8..48f2cc252 100644 --- a/debian/patches-rt/fs-aio-simple-simple-work.patch +++ b/debian/patches-rt/fs-aio-simple-simple-work.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 16 Feb 2015 18:49:10 +0100 Subject: fs/aio: simple simple work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768 |in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2 @@ -38,7 +38,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> #include <asm/kmap_types.h> #include <linux/uaccess.h> -@@ -120,6 +121,7 @@ struct kioctx { +@@ -121,6 +122,7 @@ struct kioctx { long nr_pages; struct rcu_work free_rwork; /* see free_ioctx() */ @@ -46,7 +46,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * signals when all in-flight requests are done -@@ -254,6 +256,7 @@ static int __init aio_setup(void) +@@ -255,6 +257,7 @@ static int __init aio_setup(void) .mount = aio_mount, .kill_sb = kill_anon_super, }; @@ -54,7 +54,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> aio_mnt = kern_mount(&aio_fs); if (IS_ERR(aio_mnt)) panic("Failed to create aio fs mount."); -@@ -595,9 +598,9 @@ static void free_ioctx_reqs(struct percp +@@ -596,9 +599,9 @@ static void free_ioctx_reqs(struct percp * and ctx->users has dropped to 0, so we know no more kiocbs can be submitted - * now it's safe to cancel any that need to be. */ @@ -66,7 +66,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> struct aio_kiocb *req; spin_lock_irq(&ctx->ctx_lock); -@@ -615,6 +618,14 @@ static void free_ioctx_users(struct perc +@@ -616,6 +619,14 @@ static void free_ioctx_users(struct perc percpu_ref_put(&ctx->reqs); } diff --git a/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch b/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch index 95127bcd9..84a80beb5 100644 --- a/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch +++ b/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 13 Sep 2017 12:32:34 +0200 Subject: [PATCH] fs/dcache: bring back explicit INIT_HLIST_BL_HEAD init -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However diff --git a/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch b/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch index c3fc331c1..9bf9aba3b 100644 --- a/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch +++ b/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 20 Oct 2017 11:29:53 +0200 Subject: [PATCH] fs/dcache: disable preemption on i_dir_seq's write side -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz i_dir_seq is an opencoded seqcounter. Based on the code it looks like we could have two writers in parallel despite the fact that the d_lock is diff --git a/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch b/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch index 4d4e54ef1..3e7d54dc5 100644 --- a/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch +++ b/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch @@ -1,7 +1,7 @@ Subject: fs: dcache: Use cpu_chill() in trylock loops From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 07 Mar 2012 21:00:34 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Use cpu_chill() instead of cpu_relax() to let the system diff --git a/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch b/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch index dae1186ce..f66b65a1a 100644 --- a/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch +++ b/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 14 Sep 2016 14:35:49 +0200 Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz __d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock() which disables preemption. As a workaround convert it to swait. @@ -163,7 +163,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> goto end_instantiate; --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c -@@ -678,7 +678,7 @@ static bool proc_sys_fill_cache(struct f +@@ -677,7 +677,7 @@ static bool proc_sys_fill_cache(struct f child = d_lookup(dir, &qname); if (!child) { diff --git a/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch b/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch index 58973dec1..18a95180d 100644 --- a/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch +++ b/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 18 Mar 2011 10:11:25 +0100 Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz bit_spin_locks break under RT. diff --git a/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch b/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch index d06d43149..1fcb99c3c 100644 --- a/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch +++ b/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 15 Sep 2016 10:51:27 +0200 Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The RW semaphore had a reader side which used the _non_owner version because it most likely took the reader lock in one thread and released it diff --git a/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch b/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch index 4714cb54e..434c037e7 100644 --- a/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch +++ b/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 18 Mar 2011 09:18:52 +0100 Subject: buffer_head: Replace bh_uptodate_lock for -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Wrap the bit_spin_lock calls into a separate inline and add the RT replacements with a real spinlock. diff --git a/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch b/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch index 8a3698c70..2766a5780 100644 --- a/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch +++ b/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch @@ -1,7 +1,7 @@ From: Clark Williams <williams@redhat.com> Date: Tue, 3 Jul 2018 13:34:30 -0500 Subject: [PATCH] fscache: initialize cookie hash table raw spinlocks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The fscache cookie mechanism uses a hash table of hlist_bl_head structures. The PREEMPT_RT patcheset adds a raw spinlock to this structure and so on PREEMPT_RT diff --git a/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch b/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch index 5f0137ee0..970e93ab5 100644 --- a/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch +++ b/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch @@ -1,7 +1,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Sun, 16 Oct 2016 05:08:30 +0200 Subject: [PATCH] ftrace: Fix trace header alignment -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Line up helper arrows to the right column. diff --git a/debian/patches-rt/ftrace-migrate-disable-tracing.patch b/debian/patches-rt/ftrace-migrate-disable-tracing.patch index 0f9be281e..4262d1c99 100644 --- a/debian/patches-rt/ftrace-migrate-disable-tracing.patch +++ b/debian/patches-rt/ftrace-migrate-disable-tracing.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 17 Jul 2011 21:56:42 +0200 Subject: trace: Add migrate-disabled counter to tracing output -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- diff --git a/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch b/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch index d5b300848..171a57869 100644 --- a/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch +++ b/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 1 Mar 2013 11:17:42 +0100 Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In exit_pi_state_list() we have the following locking construct: diff --git a/debian/patches-rt/futex-requeue-pi-fix.patch b/debian/patches-rt/futex-requeue-pi-fix.patch index 8a1df1565..9449180e5 100644 --- a/debian/patches-rt/futex-requeue-pi-fix.patch +++ b/debian/patches-rt/futex-requeue-pi-fix.patch @@ -1,7 +1,7 @@ From: Steven Rostedt <rostedt@goodmis.org> Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: futex: Fix bug on when a requeued RT task times out -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Requeue with timeout causes a bug with PREEMPT_RT_FULL. diff --git a/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch b/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch index a6750a62a..3122ce705 100644 --- a/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch +++ b/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 8 Mar 2017 14:23:35 +0100 Subject: [PATCH] futex: workaround migrate_disable/enable in different context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz migrate_disable()/migrate_enable() takes a different path in atomic() vs !atomic() context. These little hacks ensure that we don't underflow / overflow @@ -16,7 +16,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/futex.c +++ b/kernel/futex.c -@@ -2798,9 +2798,18 @@ static int futex_lock_pi(u32 __user *uad +@@ -2855,9 +2855,18 @@ static int futex_lock_pi(u32 __user *uad * lock handoff sequence. */ raw_spin_lock_irq(&q.pi_state->pi_mutex.wait_lock); @@ -35,7 +35,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> if (ret) { if (ret == 1) -@@ -2947,11 +2956,21 @@ static int futex_unlock_pi(u32 __user *u +@@ -3004,11 +3013,21 @@ static int futex_unlock_pi(u32 __user *u * observed. */ raw_spin_lock_irq(&pi_state->pi_mutex.wait_lock); diff --git a/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch b/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch index e1377e8c5..3556dc128 100644 --- a/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch +++ b/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:29:57 -0500 Subject: genirq: Disable irqpoll on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Creates long latencies for no value diff --git a/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch b/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch index b0fd64b23..e5db60c47 100644 --- a/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch +++ b/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 21 Aug 2013 17:48:46 +0200 Subject: genirq: Do not invoke the affinity callback via a workqueue on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Joe Korty reported, that __irq_set_affinity_locked() schedules a workqueue while holding a rawlock which results in a might_sleep() diff --git a/debian/patches-rt/genirq-force-threading.patch b/debian/patches-rt/genirq-force-threading.patch index 2a63d40d4..491f411df 100644 --- a/debian/patches-rt/genirq-force-threading.patch +++ b/debian/patches-rt/genirq-force-threading.patch @@ -1,7 +1,7 @@ Subject: genirq: Force interrupt thread on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 03 Apr 2011 11:57:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Force threaded_irqs and optimize the code (force_irqthreads) in regard to this. diff --git a/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch b/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch index 65732abe6..9d7454025 100644 --- a/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch +++ b/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch @@ -1,7 +1,7 @@ From: Josh Cartwright <joshc@ni.com> Date: Thu, 11 Feb 2016 11:54:00 -0600 Subject: genirq: update irq_set_irqchip_state documentation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On -rt kernels, the use of migrate_disable()/migrate_enable() is sufficient to guarantee a task isn't moved to another CPU. Update the diff --git a/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch b/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch index c7306768b..cc462bf75 100644 --- a/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch +++ b/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 4 Aug 2017 18:31:00 +0200 Subject: [PATCH] hotplug: duct-tape RT-rwlock usage for non-RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz This type is only available on -RT. We need to craft something for non-RT. Since the only migrate_disable() user is -RT only, there is no diff --git a/debian/patches-rt/hotplug-light-get-online-cpus.patch b/debian/patches-rt/hotplug-light-get-online-cpus.patch index 4989fc658..24d039f8c 100644 --- a/debian/patches-rt/hotplug-light-get-online-cpus.patch +++ b/debian/patches-rt/hotplug-light-get-online-cpus.patch @@ -1,7 +1,7 @@ Subject: hotplug: Lightweight get online cpus From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 15 Jun 2011 12:36:06 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz get_online_cpus() is a heavy weight function which involves a global mutex. migrate_disable() wants a simpler construct which prevents only @@ -65,7 +65,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> void cpus_read_lock(void) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -7203,6 +7203,7 @@ void migrate_disable(void) +@@ -7202,6 +7202,7 @@ void migrate_disable(void) } preempt_disable(); @@ -73,7 +73,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> migrate_disable_update_cpus_allowed(p); p->migrate_disable = 1; -@@ -7268,12 +7269,15 @@ void migrate_enable(void) +@@ -7267,12 +7268,15 @@ void migrate_enable(void) arg.task = p; arg.dest_cpu = dest_cpu; diff --git a/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch b/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch index c83f20975..f1be624c4 100644 --- a/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch +++ b/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch @@ -1,7 +1,7 @@ From: Yang Shi <yang.shi@windriver.com> Date: Mon, 16 Sep 2013 14:09:19 -0700 Subject: hrtimer: Move schedule_work call to helper thread -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When run ltp leapsec_timer test, the following call trace is caught: diff --git a/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch b/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch index 0c60215c4..186b2e4b7 100644 --- a/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch +++ b/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 3 Jul 2009 08:44:31 -0500 Subject: hrtimer: by timers by default into the softirq context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz We can't have hrtimers callbacks running in hardirq context on RT. Therefore the timers are deferred to the softirq context by default. @@ -81,7 +81,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -315,7 +315,7 @@ static void hrtick_rq_init(struct rq *rq +@@ -314,7 +314,7 @@ static void hrtick_rq_init(struct rq *rq rq->hrtick_csd.info = rq; #endif @@ -103,7 +103,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -4878,9 +4878,9 @@ void init_cfs_bandwidth(struct cfs_bandw +@@ -4880,9 +4880,9 @@ void init_cfs_bandwidth(struct cfs_bandw cfs_b->period = ns_to_ktime(default_cfs_period()); INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); diff --git a/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch b/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch index 1bfe18913..7382ce824 100644 --- a/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch +++ b/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 3 Jul 2018 11:25:41 +0200 Subject: [PATCH v2] hrtimer: consolidate hrtimer_init() + hrtimer_init_sleeper() calls -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz hrtimer_init_sleeper() calls require a prior initialisation of the hrtimer object with hrtimer_init(). Lets make the initialisation of @@ -117,7 +117,7 @@ Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> current->timer_slack_ns, \ --- a/kernel/futex.c +++ b/kernel/futex.c -@@ -2624,10 +2624,9 @@ static int futex_wait(u32 __user *uaddr, +@@ -2681,10 +2681,9 @@ static int futex_wait(u32 __user *uaddr, if (abs_time) { to = &timeout; @@ -131,7 +131,7 @@ Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> hrtimer_set_expires_range_ns(&to->timer, *abs_time, current->timer_slack_ns); } -@@ -2726,9 +2725,8 @@ static int futex_lock_pi(u32 __user *uad +@@ -2783,9 +2782,8 @@ static int futex_lock_pi(u32 __user *uad if (time) { to = &timeout; @@ -143,7 +143,7 @@ Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> hrtimer_set_expires(&to->timer, *time); } -@@ -3144,10 +3142,9 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3201,10 +3199,9 @@ static int futex_wait_requeue_pi(u32 __u if (abs_time) { to = &timeout; diff --git a/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch b/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch index d456ac143..46d53d858 100644 --- a/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch +++ b/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 6 Dec 2018 10:15:13 +0100 Subject: [PATCH] hrtimer: move state change before hrtimer_cancel in do_nanosleep() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There is a small window between setting t->task to NULL and waking the task up (which would set TASK_RUNNING). So the timer would fire, run and diff --git a/debian/patches-rt/hrtimers-prepare-full-preemption.patch b/debian/patches-rt/hrtimers-prepare-full-preemption.patch index 78e9203cb..150159934 100644 --- a/debian/patches-rt/hrtimers-prepare-full-preemption.patch +++ b/debian/patches-rt/hrtimers-prepare-full-preemption.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:29:34 -0500 Subject: hrtimers: Prepare full preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Make cancellation of a running callback in softirq context safe against preemption. @@ -174,7 +174,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> expires = timeval_to_ktime(value->it_value); --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c -@@ -466,7 +466,7 @@ static struct k_itimer * alloc_posix_tim +@@ -463,7 +463,7 @@ static struct k_itimer * alloc_posix_tim static void k_itimer_rcu_free(struct rcu_head *head) { @@ -183,7 +183,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> kmem_cache_free(posix_timers_cache, tmr); } -@@ -483,7 +483,7 @@ static void release_posix_timer(struct k +@@ -480,7 +480,7 @@ static void release_posix_timer(struct k } put_pid(tmr->it_pid); sigqueue_free(tmr->sigq); @@ -192,7 +192,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } static int common_timer_create(struct k_itimer *new_timer) -@@ -824,6 +824,22 @@ static void common_hrtimer_arm(struct k_ +@@ -821,6 +821,22 @@ static void common_hrtimer_arm(struct k_ hrtimer_start_expires(timer, HRTIMER_MODE_ABS); } @@ -215,7 +215,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> static int common_hrtimer_try_to_cancel(struct k_itimer *timr) { return hrtimer_try_to_cancel(&timr->it.real.timer); -@@ -888,6 +904,7 @@ static int do_timer_settime(timer_t time +@@ -885,6 +901,7 @@ static int do_timer_settime(timer_t time if (!timr) return -EINVAL; @@ -223,7 +223,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> kc = timr->kclock; if (WARN_ON_ONCE(!kc || !kc->timer_set)) error = -EINVAL; -@@ -896,9 +913,12 @@ static int do_timer_settime(timer_t time +@@ -893,9 +910,12 @@ static int do_timer_settime(timer_t time unlock_timer(timr, flag); if (error == TIMER_RETRY) { @@ -236,7 +236,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> return error; } -@@ -980,10 +1000,15 @@ SYSCALL_DEFINE1(timer_delete, timer_t, t +@@ -977,10 +997,15 @@ SYSCALL_DEFINE1(timer_delete, timer_t, t if (!timer) return -EINVAL; @@ -252,7 +252,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> spin_lock(¤t->sighand->siglock); list_del(&timer->list); -@@ -1009,8 +1034,18 @@ static void itimer_delete(struct k_itime +@@ -1006,8 +1031,18 @@ static void itimer_delete(struct k_itime retry_delete: spin_lock_irqsave(&timer->it_lock, flags); diff --git a/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch b/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch index cec6ebc68..a6ca18cc0 100644 --- a/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch +++ b/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch @@ -1,7 +1,7 @@ Subject: genirq: Allow disabling of softirq processing in irq thread context From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 31 Jan 2012 13:01:27 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The processing of softirqs in irq thread context is a performance gain for the non-rt workloads of a system, but it's counterproductive for diff --git a/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch b/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch index 28ec9a314..f6cfec8d2 100644 --- a/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch +++ b/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch @@ -2,7 +2,7 @@ From: Marc Zyngier <marc.zyngier@arm.com> Date: Fri, 27 Jul 2018 13:38:54 +0100 Subject: [PATCH] irqchip/gic-v3-its: Move pending table allocation to init time -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> diff --git a/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch b/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch index b57aeae2e..c1027e63d 100644 --- a/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch +++ b/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch @@ -1,7 +1,7 @@ Subject: irqwork: push most work into softirq context From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 23 Jun 2015 15:32:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Initially we defered all irqwork into softirq because we didn't want the latency spikes if perf or another user was busy and delayed the RT task. diff --git a/debian/patches-rt/jump-label-rt.patch b/debian/patches-rt/jump-label-rt.patch index 2ed9e2429..41eae692f 100644 --- a/debian/patches-rt/jump-label-rt.patch +++ b/debian/patches-rt/jump-label-rt.patch @@ -1,7 +1,7 @@ Subject: jump-label: disable if stop_machine() is used From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 08 Jul 2015 17:14:48 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Some architectures are using stop_machine() while switching the opcode which leads to latency spikes. diff --git a/debian/patches-rt/kconfig-disable-a-few-options-rt.patch b/debian/patches-rt/kconfig-disable-a-few-options-rt.patch index 2c291c7e1..b8aebfe44 100644 --- a/debian/patches-rt/kconfig-disable-a-few-options-rt.patch +++ b/debian/patches-rt/kconfig-disable-a-few-options-rt.patch @@ -1,7 +1,7 @@ Subject: kconfig: Disable config options which are not RT compatible From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 24 Jul 2011 12:11:43 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Disable stuff which is known to have issues on RT diff --git a/debian/patches-rt/kconfig-preempt-rt-full.patch b/debian/patches-rt/kconfig-preempt-rt-full.patch index b11847d18..ee4306fc9 100644 --- a/debian/patches-rt/kconfig-preempt-rt-full.patch +++ b/debian/patches-rt/kconfig-preempt-rt-full.patch @@ -1,7 +1,7 @@ Subject: kconfig: Add PREEMPT_RT_FULL From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 29 Jun 2011 14:58:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Introduce the final symbol for PREEMPT_RT_FULL. diff --git a/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch b/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch index f47976a6c..394c03b4f 100644 --- a/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch +++ b/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 19 May 2016 17:45:27 +0200 Subject: [PATCH] kernel/printk: Don't try to print from IRQ/NMI region -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On -RT we try to acquire sleeping locks which might lead to warnings from lockdep or a warn_on() from spin_try_lock() (which is a rtmutex on diff --git a/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch b/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch index 631e0d77a..d0b242128 100644 --- a/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch +++ b/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch @@ -4,7 +4,7 @@ Subject: [PATCH] kernel: sched: Provide a pointer to the valid CPU mask MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In commit 4b53a3412d66 ("sched/core: Remove the tsk_nr_cpus_allowed() wrapper") the tsk_nr_cpus_allowed() wrapper was removed. There was not @@ -305,7 +305,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * One for us, one for whoever does the "release_task()" (usually --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -877,7 +877,7 @@ static inline bool is_per_cpu_kthread(st +@@ -876,7 +876,7 @@ static inline bool is_per_cpu_kthread(st */ static inline bool is_cpu_allowed(struct task_struct *p, int cpu) { @@ -314,7 +314,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> return false; if (is_per_cpu_kthread(p)) -@@ -972,7 +972,7 @@ static int migration_cpu_stop(void *data +@@ -971,7 +971,7 @@ static int migration_cpu_stop(void *data local_irq_disable(); /* * We need to explicitly wake pending tasks before running @@ -323,7 +323,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * during wakeups, see set_cpus_allowed_ptr()'s TASK_WAKING test. */ sched_ttwu_pending(); -@@ -1003,7 +1003,7 @@ static int migration_cpu_stop(void *data +@@ -1002,7 +1002,7 @@ static int migration_cpu_stop(void *data */ void set_cpus_allowed_common(struct task_struct *p, const struct cpumask *new_mask) { @@ -332,7 +332,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> p->nr_cpus_allowed = cpumask_weight(new_mask); } -@@ -1073,7 +1073,7 @@ static int __set_cpus_allowed_ptr(struct +@@ -1072,7 +1072,7 @@ static int __set_cpus_allowed_ptr(struct goto out; } @@ -341,7 +341,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> goto out; if (!cpumask_intersects(new_mask, cpu_valid_mask)) { -@@ -1236,10 +1236,10 @@ static int migrate_swap_stop(void *data) +@@ -1235,10 +1235,10 @@ static int migrate_swap_stop(void *data) if (task_cpu(arg->src_task) != arg->src_cpu) goto unlock; @@ -354,7 +354,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> goto unlock; __migrate_swap_task(arg->src_task, arg->dst_cpu); -@@ -1281,10 +1281,10 @@ int migrate_swap(struct task_struct *cur +@@ -1280,10 +1280,10 @@ int migrate_swap(struct task_struct *cur if (!cpu_active(arg.src_cpu) || !cpu_active(arg.dst_cpu)) goto out; @@ -367,7 +367,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> goto out; trace_sched_swap_numa(cur, arg.src_cpu, p, arg.dst_cpu); -@@ -1429,7 +1429,7 @@ void kick_process(struct task_struct *p) +@@ -1428,7 +1428,7 @@ void kick_process(struct task_struct *p) EXPORT_SYMBOL_GPL(kick_process); /* @@ -376,7 +376,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * * A few notes on cpu_active vs cpu_online: * -@@ -1469,14 +1469,14 @@ static int select_fallback_rq(int cpu, s +@@ -1468,14 +1468,14 @@ static int select_fallback_rq(int cpu, s for_each_cpu(dest_cpu, nodemask) { if (!cpu_active(dest_cpu)) continue; @@ -393,7 +393,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> if (!is_cpu_allowed(p, dest_cpu)) continue; -@@ -1520,7 +1520,7 @@ static int select_fallback_rq(int cpu, s +@@ -1519,7 +1519,7 @@ static int select_fallback_rq(int cpu, s } /* @@ -402,7 +402,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> */ static inline int select_task_rq(struct task_struct *p, int cpu, int sd_flags, int wake_flags) -@@ -1530,11 +1530,11 @@ int select_task_rq(struct task_struct *p +@@ -1529,11 +1529,11 @@ int select_task_rq(struct task_struct *p if (p->nr_cpus_allowed > 1) cpu = p->sched_class->select_task_rq(p, cpu, sd_flags, wake_flags); else @@ -416,7 +416,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * CPU. * * Since this is common to all placement strategies, this lives here. -@@ -2401,7 +2401,7 @@ void wake_up_new_task(struct task_struct +@@ -2400,7 +2400,7 @@ void wake_up_new_task(struct task_struct #ifdef CONFIG_SMP /* * Fork balancing, do it here and not earlier because: @@ -425,7 +425,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * - any previously selected CPU might disappear through hotplug * * Use __set_task_cpu() to avoid calling sched_class::migrate_task_rq, -@@ -4274,7 +4274,7 @@ static int __sched_setscheduler(struct t +@@ -4273,7 +4273,7 @@ static int __sched_setscheduler(struct t * the entire root_domain to become SCHED_DEADLINE. We * will also fail if there's no bandwidth available. */ @@ -434,7 +434,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> rq->rd->dl_bw.bw == 0) { task_rq_unlock(rq, p, &rf); return -EPERM; -@@ -4873,7 +4873,7 @@ long sched_getaffinity(pid_t pid, struct +@@ -4872,7 +4872,7 @@ long sched_getaffinity(pid_t pid, struct goto out_unlock; raw_spin_lock_irqsave(&p->pi_lock, flags); @@ -443,7 +443,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> raw_spin_unlock_irqrestore(&p->pi_lock, flags); out_unlock: -@@ -5453,7 +5453,7 @@ int task_can_attach(struct task_struct * +@@ -5452,7 +5452,7 @@ int task_can_attach(struct task_struct * * allowed nodes is unnecessary. Thus, cpusets are not * applicable for such threads. This prevents checking for * success of set_cpus_allowed_ptr() on all attached tasks @@ -452,7 +452,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> */ if (p->flags & PF_NO_SETAFFINITY) { ret = -EINVAL; -@@ -5480,7 +5480,7 @@ int migrate_task_to(struct task_struct * +@@ -5479,7 +5479,7 @@ int migrate_task_to(struct task_struct * if (curr_cpu == target_cpu) return 0; @@ -461,7 +461,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> return -EINVAL; /* TODO: This is not properly updating schedstats */ -@@ -5618,7 +5618,7 @@ static void migrate_tasks(struct rq *dea +@@ -5617,7 +5617,7 @@ static void migrate_tasks(struct rq *dea put_prev_task(rq, next); /* @@ -554,7 +554,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> continue; env->dst_cpu = cpu; -@@ -5711,7 +5711,7 @@ find_idlest_group(struct sched_domain *s +@@ -5713,7 +5713,7 @@ find_idlest_group(struct sched_domain *s /* Skip over this group if it has no CPUs allowed */ if (!cpumask_intersects(sched_group_span(group), @@ -563,7 +563,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> continue; local_group = cpumask_test_cpu(this_cpu, -@@ -5843,7 +5843,7 @@ find_idlest_group_cpu(struct sched_group +@@ -5845,7 +5845,7 @@ find_idlest_group_cpu(struct sched_group return cpumask_first(sched_group_span(group)); /* Traverse only the allowed CPUs */ @@ -572,7 +572,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> if (available_idle_cpu(i)) { struct rq *rq = cpu_rq(i); struct cpuidle_state *idle = idle_get_state(rq); -@@ -5883,7 +5883,7 @@ static inline int find_idlest_cpu(struct +@@ -5885,7 +5885,7 @@ static inline int find_idlest_cpu(struct { int new_cpu = cpu; @@ -581,7 +581,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> return prev_cpu; /* -@@ -5999,7 +5999,7 @@ static int select_idle_core(struct task_ +@@ -6001,7 +6001,7 @@ static int select_idle_core(struct task_ if (!test_idle_cores(target, false)) return -1; @@ -590,7 +590,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> for_each_cpu_wrap(core, cpus, target) { bool idle = true; -@@ -6033,7 +6033,7 @@ static int select_idle_smt(struct task_s +@@ -6035,7 +6035,7 @@ static int select_idle_smt(struct task_s return -1; for_each_cpu(cpu, cpu_smt_mask(target)) { @@ -599,7 +599,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> continue; if (available_idle_cpu(cpu)) return cpu; -@@ -6096,7 +6096,7 @@ static int select_idle_cpu(struct task_s +@@ -6098,7 +6098,7 @@ static int select_idle_cpu(struct task_s for_each_cpu_wrap(cpu, sched_domain_span(sd), target) { if (!--nr) return -1; @@ -608,7 +608,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> continue; if (available_idle_cpu(cpu)) break; -@@ -6133,7 +6133,7 @@ static int select_idle_sibling(struct ta +@@ -6135,7 +6135,7 @@ static int select_idle_sibling(struct ta recent_used_cpu != target && cpus_share_cache(recent_used_cpu, target) && available_idle_cpu(recent_used_cpu) && @@ -617,7 +617,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * Replace recent_used_cpu with prev as it is a potential * candidate for the next wake: -@@ -6351,7 +6351,7 @@ select_task_rq_fair(struct task_struct * +@@ -6353,7 +6353,7 @@ select_task_rq_fair(struct task_struct * if (sd_flag & SD_BALANCE_WAKE) { record_wakee(p); want_affine = !wake_wide(p) && !wake_cap(p, cpu, prev_cpu) @@ -626,7 +626,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } rcu_read_lock(); -@@ -7090,14 +7090,14 @@ int can_migrate_task(struct task_struct +@@ -7092,14 +7092,14 @@ int can_migrate_task(struct task_struct /* * We do not migrate tasks that are: * 1) throttled_lb_pair, or @@ -643,7 +643,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> int cpu; schedstat_inc(p->se.statistics.nr_failed_migrations_affine); -@@ -7117,7 +7117,7 @@ int can_migrate_task(struct task_struct +@@ -7119,7 +7119,7 @@ int can_migrate_task(struct task_struct /* Prevent to re-select dst_cpu via env's CPUs: */ for_each_cpu_and(cpu, env->dst_grpmask, env->cpus) { @@ -652,7 +652,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> env->flags |= LBF_DST_PINNED; env->new_dst_cpu = cpu; break; -@@ -7738,7 +7738,7 @@ check_cpu_capacity(struct rq *rq, struct +@@ -7740,7 +7740,7 @@ check_cpu_capacity(struct rq *rq, struct /* * Group imbalance indicates (and tries to solve) the problem where balancing @@ -661,7 +661,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * * Imagine a situation of two groups of 4 CPUs each and 4 tasks each with a * cpumask covering 1 CPU of the first group and 3 CPUs of the second group. -@@ -8353,7 +8353,7 @@ static struct sched_group *find_busiest_ +@@ -8355,7 +8355,7 @@ static struct sched_group *find_busiest_ /* * If the busiest group is imbalanced the below checks don't * work because they assume all things are equal, which typically @@ -670,7 +670,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> */ if (busiest->group_type == group_imbalanced) goto force_balance; -@@ -8749,7 +8749,7 @@ static int load_balance(int this_cpu, st +@@ -8751,7 +8751,7 @@ static int load_balance(int this_cpu, st * if the curr task on busiest CPU can't be * moved to this_cpu: */ diff --git a/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch b/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch index 83ae45535..e6eeccaaa 100644 --- a/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch +++ b/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 21 Nov 2016 19:31:08 +0100 Subject: [PATCH] kernel/sched: move stack + kprobe clean up to __put_task_struct() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There is no need to free the stack before the task struct (except for reasons mentioned in commit 68f24b08ee89 ("sched/core: Free the stack early if @@ -44,7 +44,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> security_task_free(tsk); --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -2740,15 +2740,6 @@ static struct rq *finish_task_switch(str +@@ -2739,15 +2739,6 @@ static struct rq *finish_task_switch(str if (prev->sched_class->task_dead) prev->sched_class->task_dead(prev); diff --git a/debian/patches-rt/kgb-serial-hackaround.patch b/debian/patches-rt/kgb-serial-hackaround.patch index 957016ead..22401967e 100644 --- a/debian/patches-rt/kgb-serial-hackaround.patch +++ b/debian/patches-rt/kgb-serial-hackaround.patch @@ -1,7 +1,7 @@ From: Jason Wessel <jason.wessel@windriver.com> Date: Thu, 28 Jul 2011 12:42:23 -0500 Subject: kgdb/serial: Short term workaround -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On 07/27/2011 04:37 PM, Thomas Gleixner wrote: > - KGDB (not yet disabled) is reportedly unusable on -rt right now due diff --git a/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch b/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch index a1de4b230..c066dd9e6 100644 --- a/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch +++ b/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch @@ -1,7 +1,7 @@ From: He Zhe <zhe.he@windriver.com> Date: Wed, 19 Dec 2018 16:30:57 +0100 Subject: [PATCH] kmemleak: Turn kmemleak_lock to raw spinlock on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz kmemleak_lock, as a rwlock on RT, can possibly be held in atomic context and causes the follow BUG. diff --git a/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch b/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch index e91e433e5..dc9371272 100644 --- a/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch +++ b/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch @@ -1,7 +1,7 @@ From: Julia Cartwright <julia@ni.com> Date: Fri, 28 Sep 2018 21:03:51 +0000 Subject: [PATCH] kthread: convert worker lock to raw spinlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In order to enable the queuing of kthread work items from hardirq context even when PREEMPT_RT_FULL is enabled, convert the worker diff --git a/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch b/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch index 3023b9ebc..08dbd103b 100644 --- a/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch +++ b/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 23 Jan 2014 14:45:59 +0100 Subject: leds: trigger: disable CPU trigger on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz as it triggers: |CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141 diff --git a/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch b/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch index a389139f7..1430b8255 100644 --- a/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch +++ b/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch @@ -1,7 +1,7 @@ From: Josh Cartwright <joshc@ni.com> Date: Thu, 31 Mar 2016 00:04:25 -0500 Subject: [PATCH] list_bl: fixup bogus lockdep warning -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz At first glance, the use of 'static inline' seems appropriate for INIT_HLIST_BL_HEAD(). diff --git a/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch b/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch index 91690c768..e8d480ab1 100644 --- a/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch +++ b/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch @@ -1,7 +1,7 @@ From: Paul Gortmaker <paul.gortmaker@windriver.com> Date: Fri, 21 Jun 2013 15:07:25 -0400 Subject: list_bl: Make list head locking RT safe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz As per changes in include/linux/jbd_common.h for avoiding the bit_spin_locks on RT ("fs: jbd/jbd2: Make state lock and journal diff --git a/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch b/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch index e3440cc57..bc1405e4e 100644 --- a/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch +++ b/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch @@ -1,7 +1,7 @@ From: Julia Cartwright <julia@ni.com> Date: Mon, 7 May 2018 08:58:56 -0500 Subject: [PATCH] locallock: provide {get,put}_locked_ptr() variants -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Provide a set of locallocked accessors for pointers to per-CPU data; this is useful for dynamically-allocated per-CPU regions, for example. diff --git a/debian/patches-rt/localversion.patch b/debian/patches-rt/localversion.patch index 83070d2bf..d93f9478a 100644 --- a/debian/patches-rt/localversion.patch +++ b/debian/patches-rt/localversion.patch @@ -1,7 +1,7 @@ Subject: Add localversion for -RT release From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 08 Jul 2011 20:25:16 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- @@ -11,4 +11,4 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- /dev/null +++ b/localversion-rt @@ -0,0 +1 @@ -+-rt8 ++-rt10 diff --git a/debian/patches-rt/lockdep-disable-self-test.patch b/debian/patches-rt/lockdep-disable-self-test.patch index 30d938f29..f47cd4935 100644 --- a/debian/patches-rt/lockdep-disable-self-test.patch +++ b/debian/patches-rt/lockdep-disable-self-test.patch @@ -4,7 +4,7 @@ Subject: [PATCH] lockdep: disable self-test MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The self-test wasn't always 100% accurate for RT. We disabled a few tests which failed because they had a different semantic for RT. Some diff --git a/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch b/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch index e07b1d535..8fe0ce4cb 100644 --- a/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch +++ b/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch @@ -1,7 +1,7 @@ Subject: lockdep: Make it RT aware From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 17 Jul 2011 18:51:23 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz teach lockdep that we don't really do softirqs on -RT. diff --git a/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch b/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch index 6c2824da8..135dd9645 100644 --- a/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch +++ b/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch @@ -1,7 +1,7 @@ From: Josh Cartwright <josh.cartwright@ni.com> Date: Wed, 28 Jan 2015 13:08:45 -0600 Subject: lockdep: selftest: fix warnings due to missing PREEMPT_RT conditionals -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz "lockdep: Selftest: Only do hardirq context test for raw spinlock" disabled the execution of certain tests with PREEMPT_RT_FULL, but did diff --git a/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch b/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch index dee1b04d0..1ead259a5 100644 --- a/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch +++ b/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch @@ -1,7 +1,7 @@ Subject: lockdep: selftest: Only do hardirq context test for raw spinlock From: Yong Zhang <yong.zhang0@gmail.com> Date: Mon, 16 Apr 2012 15:01:56 +0800 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz From: Yong Zhang <yong.zhang@windriver.com> diff --git a/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch b/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch index fadf5c9f4..28c91cdbe 100644 --- a/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch +++ b/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 4 Aug 2017 17:40:42 +0200 Subject: [PATCH 1/2] locking: don't check for __LINUX_SPINLOCK_TYPES_H on -RT archs -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Upstream uses arch_spinlock_t within spinlock_t and requests that spinlock_types.h header file is included first. diff --git a/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch b/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch index 997987824..4ea067871 100644 --- a/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch +++ b/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch @@ -1,7 +1,7 @@ From: "Wolfgang M. Reimer" <linuxball@gmail.com> Date: Tue, 21 Jul 2015 16:20:07 +0200 Subject: locking: locktorture: Do NOT include rwlock.h directly -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Including rwlock.h directly will cause kernel builds to fail if CONFIG_PREEMPT_RT_FULL is defined. The correct header file diff --git a/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch b/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch new file mode 100644 index 000000000..b6d738c01 --- /dev/null +++ b/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch @@ -0,0 +1,40 @@ +From: Scott Wood <swood@redhat.com> +Date: Fri, 4 Jan 2019 15:33:21 -0500 +Subject: [PATCH] locking/rt-mutex: Flush block plug on __down_read() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz + +__down_read() bypasses the rtmutex frontend to call +rt_mutex_slowlock_locked() directly, and thus it needs to call +blk_schedule_flush_flug() itself. + +Cc: stable-rt@vger.kernel.org +Signed-off-by: Scott Wood <swood@redhat.com> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + kernel/locking/rwsem-rt.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +--- a/kernel/locking/rwsem-rt.c ++++ b/kernel/locking/rwsem-rt.c +@@ -1,5 +1,6 @@ + /* + */ ++#include <linux/blkdev.h> + #include <linux/rwsem.h> + #include <linux/sched/debug.h> + #include <linux/sched/signal.h> +@@ -87,6 +88,14 @@ static int __sched __down_read_common(st + + if (__down_read_trylock(sem)) + return 0; ++ /* ++ * If rt_mutex blocks, the function sched_submit_work will not call ++ * blk_schedule_flush_plug (because tsk_is_pi_blocked would be true). ++ * We must call blk_schedule_flush_plug here, if we don't call it, ++ * a deadlock in I/O may happen. ++ */ ++ if (unlikely(blk_needs_flush_plug(current))) ++ blk_schedule_flush_plug(current); + + might_sleep(); + raw_spin_lock_irq(&m->wait_lock); diff --git a/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch b/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch index 39005d935..474cc941c 100644 --- a/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch +++ b/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch @@ -1,7 +1,7 @@ From: Mikulas Patocka <mpatocka@redhat.com> Date: Mon, 13 Nov 2017 12:56:53 -0500 Subject: [PATCH] locking/rt-mutex: fix deadlock in device mapper / block-IO -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When some block device driver creates a bio and submits it to another block device driver, the bio is added to current->bio_list (in order to @@ -54,7 +54,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> + * If rt_mutex blocks, the function sched_submit_work will not call + * blk_schedule_flush_plug (because tsk_is_pi_blocked would be true). + * We must call blk_schedule_flush_plug here, if we don't call it, -+ * a deadlock in device mapper may happen. ++ * a deadlock in I/O may happen. + */ + if (unlikely(blk_needs_flush_plug(current))) + blk_schedule_flush_plug(current); diff --git a/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch b/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch index 68bd560f7..0c6030fd7 100644 --- a/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch +++ b/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 16 Nov 2017 16:48:48 +0100 Subject: [PATCH] locking/rtmutex: re-init the wait_lock in rt_mutex_init_proxy_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz We could provide a key-class for the lockdep (and fixup all callers) or move the init to all callers (like it was) in order to avoid lockdep diff --git a/debian/patches-rt/md-disable-bcache.patch b/debian/patches-rt/md-disable-bcache.patch index 75b3e4346..a4da973cb 100644 --- a/debian/patches-rt/md-disable-bcache.patch +++ b/debian/patches-rt/md-disable-bcache.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 29 Aug 2013 11:48:57 +0200 Subject: md: disable bcache -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz It uses anon semaphores |drivers/md/bcache/request.c: In function ‘cached_dev_write_complete’: diff --git a/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch index 0f2d72dab..be4d72a7c 100644 --- a/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch +++ b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 6 Apr 2010 16:51:31 +0200 Subject: md: raid5: Make raid5_percpu handling RT aware -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz __raid_run_ops() disables preemption with get_cpu() around the access to the raid5_percpu variables. That causes scheduling while atomic diff --git a/debian/patches-rt/mips-disable-highmem-on-rt.patch b/debian/patches-rt/mips-disable-highmem-on-rt.patch index 4f0bbc912..ec7f06435 100644 --- a/debian/patches-rt/mips-disable-highmem-on-rt.patch +++ b/debian/patches-rt/mips-disable-highmem-on-rt.patch @@ -1,7 +1,7 @@ Subject: mips: Disable highmem on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 18 Jul 2011 17:10:12 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch b/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch index 6456c5b56..88c64d1f3 100644 --- a/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch +++ b/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:29:51 -0500 Subject: mm/swap: Convert to percpu locked -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Replace global locks (get_cpu + local_irq_save) with "local_locks()". Currently there is one of for "rotate" and one for "swap". @@ -53,7 +53,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } --- a/mm/page_alloc.c +++ b/mm/page_alloc.c -@@ -7184,8 +7184,9 @@ void __init free_area_init(unsigned long +@@ -7196,8 +7196,9 @@ void __init free_area_init(unsigned long static int page_alloc_cpu_dead(unsigned int cpu) { diff --git a/debian/patches-rt/mm-disable-sloub-rt.patch b/debian/patches-rt/mm-disable-sloub-rt.patch index fe12455a3..ef8532560 100644 --- a/debian/patches-rt/mm-disable-sloub-rt.patch +++ b/debian/patches-rt/mm-disable-sloub-rt.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:44:03 -0500 Subject: mm: Allow only slub on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Disable SLAB and SLOB on -RT. Only SLUB is adopted to -RT needs. @@ -14,7 +14,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/init/Kconfig +++ b/init/Kconfig -@@ -1628,6 +1628,7 @@ choice +@@ -1633,6 +1633,7 @@ choice config SLAB bool "SLAB" @@ -22,7 +22,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> select HAVE_HARDENED_USERCOPY_ALLOCATOR help The regular slab allocator that is established and known to work -@@ -1648,6 +1649,7 @@ config SLUB +@@ -1653,6 +1654,7 @@ config SLUB config SLOB depends on EXPERT bool "SLOB (Simple Allocator)" diff --git a/debian/patches-rt/mm-enable-slub.patch b/debian/patches-rt/mm-enable-slub.patch index 365fbe14e..1fe7deaca 100644 --- a/debian/patches-rt/mm-enable-slub.patch +++ b/debian/patches-rt/mm-enable-slub.patch @@ -1,7 +1,7 @@ Subject: mm: Enable SLUB for RT From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 25 Oct 2012 10:32:35 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Avoid the memory allocation in IRQ section diff --git a/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch b/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch index 7380ef0ae..e39babc95 100644 --- a/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch +++ b/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Clark Williams <williams@redhat.com> Date: Tue, 18 Sep 2018 10:29:31 -0500 Subject: [PATCH] mm/kasan: make quarantine_lock a raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The static lock quarantine_lock is used in quarantine.c to protect the quarantine queue datastructures. It is taken inside quarantine queue diff --git a/debian/patches-rt/mm-make-vmstat-rt-aware.patch b/debian/patches-rt/mm-make-vmstat-rt-aware.patch index b2be2f98a..06a3cd26e 100644 --- a/debian/patches-rt/mm-make-vmstat-rt-aware.patch +++ b/debian/patches-rt/mm-make-vmstat-rt-aware.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:30:13 -0500 Subject: mm/vmstat: Protect per cpu variables with preempt disable on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Disable preemption on -RT for the vmstat code. On vanila the code runs in IRQ-off regions while on -RT it is not. "preempt_disable" ensures that the diff --git a/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch b/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch index 3f4201ccb..de3cfb769 100644 --- a/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch +++ b/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch @@ -1,7 +1,7 @@ From: Yang Shi <yang.shi@windriver.com> Subject: mm/memcontrol: Don't call schedule_work_on in preemption disabled context Date: Wed, 30 Oct 2013 11:48:33 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The following trace is triggered when running ltp oom test cases: diff --git a/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch b/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch index 9bfcc4526..9e965f0ae 100644 --- a/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch +++ b/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Subject: mm/memcontrol: Replace local_irq_disable with local locks Date: Wed, 28 Jan 2015 17:14:16 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There are a few local_irq_disable() which then take sleeping locks. This patch converts them local locks. diff --git a/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch b/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch index ab8c5dc87..f4bc67a09 100644 --- a/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch +++ b/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:29:37 -0500 Subject: mm: page_alloc: rt-friendly per-cpu pages -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz rt-friendly per-cpu pages: convert the irqs-off per-cpu locking method into a preemptible, explicit-per-cpu-locks method. @@ -213,7 +213,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> return NULL; } -@@ -8070,7 +8093,7 @@ void zone_pcp_reset(struct zone *zone) +@@ -8085,7 +8108,7 @@ void zone_pcp_reset(struct zone *zone) struct per_cpu_pageset *pset; /* avoid races with drain_pages() */ @@ -222,7 +222,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> if (zone->pageset != &boot_pageset) { for_each_online_cpu(cpu) { pset = per_cpu_ptr(zone->pageset, cpu); -@@ -8079,7 +8102,7 @@ void zone_pcp_reset(struct zone *zone) +@@ -8094,7 +8117,7 @@ void zone_pcp_reset(struct zone *zone) free_percpu(zone->pageset); zone->pageset = &boot_pageset; } diff --git a/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch b/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch index e00551d5e..34b362962 100644 --- a/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch +++ b/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch @@ -1,7 +1,7 @@ From: Luiz Capitulino <lcapitulino@redhat.com> Date: Fri, 27 May 2016 15:03:28 +0200 Subject: [PATCH] mm: perform lru_add_drain_all() remotely -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz lru_add_drain_all() works by scheduling lru_add_drain_cpu() to run on all CPUs that have non-empty LRU pagevecs and then waiting for diff --git a/debian/patches-rt/mm-protect-activate-switch-mm.patch b/debian/patches-rt/mm-protect-activate-switch-mm.patch index 71e0185f5..1064c88dd 100644 --- a/debian/patches-rt/mm-protect-activate-switch-mm.patch +++ b/debian/patches-rt/mm-protect-activate-switch-mm.patch @@ -1,7 +1,7 @@ From: Yong Zhang <yong.zhang0@gmail.com> Date: Tue, 15 May 2012 13:53:56 +0800 Subject: mm: Protect activate_mm() by preempt_[disable&enable]_rt() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz User preempt_*_rt instead of local_irq_*_rt or otherwise there will be warning on ARM like below: diff --git a/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch b/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch index cf44f57a0..90ab77f0f 100644 --- a/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch +++ b/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch @@ -1,7 +1,7 @@ Subject: mm, rt: kmap_atomic scheduling From: Peter Zijlstra <peterz@infradead.org> Date: Thu, 28 Jul 2011 10:43:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In fact, with migrate_disable() existing one could play games with kmap_atomic. You could save/restore the kmap_atomic slots on context diff --git a/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch b/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch index 513ca0247..dedcb48e7 100644 --- a/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch +++ b/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 3 Jul 2009 08:44:34 -0500 Subject: mm/scatterlist: Do not disable irqs on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz For -RT it is enough to keep pagefault disabled (which is currently handled by kmap_atomic()). diff --git a/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch b/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch index 0ea2f09de..e6fa4116d 100644 --- a/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch +++ b/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch @@ -1,7 +1,7 @@ Subject: mm/vmalloc: Another preempt disable region which sucks From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 12 Jul 2011 11:39:36 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Avoid the preempt disable version of get_cpu_var(). The inner-lock should provide enough serialisation. diff --git a/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch b/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch index 28e123363..f733a86f2 100644 --- a/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch +++ b/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch @@ -1,7 +1,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Tue, 22 Mar 2016 11:16:09 +0100 Subject: [PATCH] mm/zsmalloc: copy with get_cpu_var() and locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz get_cpu_var() disables preemption and triggers a might_sleep() splat later. This is replaced with get_locked_var(). diff --git a/debian/patches-rt/mutex-no-spin-on-rt.patch b/debian/patches-rt/mutex-no-spin-on-rt.patch index 934a969d4..7e3049e82 100644 --- a/debian/patches-rt/mutex-no-spin-on-rt.patch +++ b/debian/patches-rt/mutex-no-spin-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 17 Jul 2011 21:51:45 +0200 Subject: locking: Disable spin on owner for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Drop spin on owner for mutex / rwsem. We are most likely not using it but… diff --git a/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch b/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch index 9921264c4..2611c97f2 100644 --- a/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch +++ b/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch @@ -2,7 +2,7 @@ From: Steven Rostedt <rostedt@goodmis.org> Date: Tue, 6 Dec 2016 17:50:30 -0500 Subject: [PATCH] net: Have __napi_schedule_irqoff() disable interrupts on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz A customer hit a crash where the napi sd->poll_list became corrupted. The customer had the bnx2x driver, which does a diff --git a/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch b/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch index c01142849..f98875d8b 100644 --- a/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch +++ b/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 14 Sep 2016 17:36:35 +0200 Subject: [PATCH] net/Qdisc: use a seqlock instead seqcount -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The seqcount disables preemption on -RT while it is held which can't remove. Also we don't want the reader to spin for ages if the writer is diff --git a/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch b/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch index 758021480..eb4b86006 100644 --- a/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch +++ b/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 31 Aug 2016 17:54:09 +0200 Subject: [PATCH] net: add a lock around icmp_sk() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz It looks like the this_cpu_ptr() access in icmp_sk() is protected with local_bh_disable(). To avoid missing serialization in -RT I am adding diff --git a/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch b/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch index 20fb5c4bc..f5cc920de 100644 --- a/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch +++ b/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch @@ -5,7 +5,7 @@ Subject: [PATCH] net: add back the missing serialization in MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Some time ago Sami Pietikäinen reported a crash on -RT in ip_send_unicast_reply() which was later fixed by Nicholas Mc Guire diff --git a/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch b/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch index 5a2fb77f4..36c94912d 100644 --- a/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch +++ b/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 26 Sep 2012 16:21:08 +0200 Subject: net: Another local_irq_disable/kmalloc headache -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Replace it by a local lock. Though that's pretty inefficient :( diff --git a/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch b/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch index c05fffe02..47e1311e9 100644 --- a/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch +++ b/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 15 Jan 2016 16:33:34 +0100 Subject: net/core: protect users of napi_alloc_cache against reentrance -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On -RT the code running in BH can not be moved to another CPU so CPU local variable remain local. However the code can be preempted diff --git a/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch b/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch index d1259b7f0..15acba75e 100644 --- a/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch +++ b/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 16 Jun 2017 19:03:16 +0200 Subject: [PATCH] net/core: use local_bh_disable() in netif_rx_ni() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In 2004 netif_rx_ni() gained a preempt_disable() section around netif_rx() and its do_softirq() + testing for it. The do_softirq() part diff --git a/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch b/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch index bff1b6d7e..e9e7e93c0 100644 --- a/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch +++ b/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 30 Mar 2016 13:36:29 +0200 Subject: [PATCH] net: dev: always take qdisc's busylock in __dev_xmit_skb() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The root-lock is dropped before dev_hard_start_xmit() is invoked and after setting the __QDISC___STATE_RUNNING bit. If this task is now pushed away diff --git a/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch b/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch index b9c2babdd..7bf773c1c 100644 --- a/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch +++ b/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch @@ -1,7 +1,7 @@ Subject: net: netfilter: Serialize xt_write_recseq sections on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 28 Oct 2012 11:18:08 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The netfilter code relies only on the implicit semantics of local_bh_disable() for serializing wt_write_recseq sections. RT breaks diff --git a/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch b/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch index 44bf70478..7ef221461 100644 --- a/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch +++ b/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 20 Mar 2013 18:06:20 +0100 Subject: net: Add a mutex around devnet_rename_seq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On RT write_seqcount_begin() disables preemption and device_rename() allocates memory with GFP_KERNEL and grabs later the sysfs_mutex diff --git a/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch b/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch index 70c2452d1..cef07d10a 100644 --- a/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch +++ b/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 13 Jan 2016 15:55:02 +0100 Subject: net: move xmit_recursion to per-task variable on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz A softirq on -RT can be preempted. That means one task is in __dev_queue_xmit(), gets preempted and another task may enter diff --git a/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch b/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch index 05e8c7fd4..238283bc7 100644 --- a/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch +++ b/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 20 Jan 2016 15:39:05 +0100 Subject: net: provide a way to delegate processing a softirq to ksoftirqd -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz If the NET_RX uses up all of his budget it moves the following NAPI invocations into the `ksoftirqd`. On -RT it does not do so. Instead it diff --git a/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch b/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch index 913ea6785..a3d277701 100644 --- a/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch +++ b/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch @@ -1,7 +1,7 @@ From: Marc Kleine-Budde <mkl@pengutronix.de> Date: Wed, 5 Mar 2014 00:49:47 +0100 Subject: net: sched: Use msleep() instead of yield() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On PREEMPT_RT enabled systems the interrupt handler run as threads at prio 50 (by default). If a high priority userspace process tries to shut down a busy diff --git a/debian/patches-rt/net-use-cpu-chill.patch b/debian/patches-rt/net-use-cpu-chill.patch index 02e53b0d5..3dcfe75de 100644 --- a/debian/patches-rt/net-use-cpu-chill.patch +++ b/debian/patches-rt/net-use-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: net: Use cpu_chill() instead of cpu_relax() From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 07 Mar 2012 21:10:04 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Use cpu_chill() instead of cpu_relax() to let the system diff --git a/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch b/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch index f76ef26bb..2eee7de40 100644 --- a/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch +++ b/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat, 27 May 2017 19:02:06 +0200 Subject: net/core: disable NET_RX_BUSY_POLL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz sk_busy_loop() does preempt_disable() followed by a few operations which can take sleeping locks and may get long. diff --git a/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch b/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch index ed2fecbb4..7290142e9 100644 --- a/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch +++ b/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 31 Aug 2018 14:16:30 +0200 Subject: [PATCH] of: allocate / free phandle cache outside of the devtree_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The phandle cache code allocates memory while holding devtree_lock which is a raw_spinlock_t. Memory allocation (and free()) is not possible on diff --git a/debian/patches-rt/oleg-signal-rt-fix.patch b/debian/patches-rt/oleg-signal-rt-fix.patch index 07d966f9b..2e73336c3 100644 --- a/debian/patches-rt/oleg-signal-rt-fix.patch +++ b/debian/patches-rt/oleg-signal-rt-fix.patch @@ -1,7 +1,7 @@ From: Oleg Nesterov <oleg@redhat.com> Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: signal/x86: Delay calling signals in atomic -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On x86_64 we must disable preemption before we enable interrupts for stack faults, int3 and debugging, because the current task is using diff --git a/debian/patches-rt/panic-disable-random-on-rt.patch b/debian/patches-rt/panic-disable-random-on-rt.patch index e2ff1ffdf..6f6bc9148 100644 --- a/debian/patches-rt/panic-disable-random-on-rt.patch +++ b/debian/patches-rt/panic-disable-random-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: panic: skip get_random_bytes for RT_FULL in init_oops_id -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Disable on -RT. If this is invoked from irq-context we will have problems to acquire the sleeping lock. @@ -13,7 +13,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/kernel/panic.c +++ b/kernel/panic.c -@@ -475,9 +475,11 @@ static u64 oops_id; +@@ -479,9 +479,11 @@ static u64 oops_id; static int init_oops_id(void) { diff --git a/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch b/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch index 5b956d6f7..a72a2d196 100644 --- a/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch +++ b/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch @@ -1,7 +1,7 @@ Subject: rcu: Make ksoftirqd do RCU quiescent states From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Date: Wed, 5 Oct 2011 11:45:18 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Implementing RCU-bh in terms of RCU-preempt makes the system vulnerable to network-based denial-of-service attacks. This patch therefore diff --git a/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch b/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch index f650db512..d70bbbe5e 100644 --- a/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch +++ b/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 4 Oct 2017 10:24:23 +0200 Subject: [PATCH] pci/switchtec: Don't use completion's wait queue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The poll callback is using completion's wait_queue_head_t member and puts it in poll_wait() so the poll() caller gets a wakeup after command diff --git a/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch b/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch index c1fb8cd99..be0286366 100644 --- a/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch +++ b/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 11 Oct 2018 16:39:59 +0200 Subject: [PATCH] percpu: include irqflags.h for raw_local_irq_save() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The header percpu.h header file is using raw_local_irq_save() but does not include irqflags.h for its definition. It compiles because the diff --git a/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch b/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch index 32ce0d1cd..eeed95b0e 100644 --- a/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch +++ b/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Wed, 19 Dec 2018 16:46:44 +0100 Subject: [PATCH] perf/x86/intel: Delay memory deallocation until cpu_dead -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz intel_pmu_cpu_prepare() allocated memory for ->shared_regs among other members of struct cpu_hw_events. This memory is released in diff --git a/debian/patches-rt/peter_zijlstra-frob-rcu.patch b/debian/patches-rt/peter_zijlstra-frob-rcu.patch index 0d8ad3d69..e3413eec3 100644 --- a/debian/patches-rt/peter_zijlstra-frob-rcu.patch +++ b/debian/patches-rt/peter_zijlstra-frob-rcu.patch @@ -1,7 +1,7 @@ Subject: rcu: Frob softirq test From: Peter Zijlstra <a.p.zijlstra@chello.nl> Date: Sat Aug 13 00:23:17 CEST 2011 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz With RT_FULL we get the below wreckage: diff --git a/debian/patches-rt/peterz-percpu-rwsem-rt.patch b/debian/patches-rt/peterz-percpu-rwsem-rt.patch index d24d60fdb..dbfd2cdb7 100644 --- a/debian/patches-rt/peterz-percpu-rwsem-rt.patch +++ b/debian/patches-rt/peterz-percpu-rwsem-rt.patch @@ -1,7 +1,7 @@ Subject: locking/percpu-rwsem: Remove preempt_disable variants From: Peter Zijlstra <peterz@infradead.org> Date: Wed Nov 23 16:29:32 CET 2016 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Effective revert commit: diff --git a/debian/patches-rt/pid.h-include-atomic.h.patch b/debian/patches-rt/pid.h-include-atomic.h.patch index 8a37cef56..39fa251ef 100644 --- a/debian/patches-rt/pid.h-include-atomic.h.patch +++ b/debian/patches-rt/pid.h-include-atomic.h.patch @@ -1,7 +1,7 @@ From: Grygorii Strashko <Grygorii.Strashko@linaro.org> Date: Tue, 21 Jul 2015 19:43:56 +0300 Subject: pid.h: include atomic.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz This patch fixes build error: CC kernel/pid_namespace.o diff --git a/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch b/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch index d8b17dc95..b9685a32c 100644 --- a/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch +++ b/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch @@ -1,7 +1,7 @@ From: Lukas Wunner <lukas@wunner.de> Date: Sat, 27 Oct 2018 10:15:33 +0200 Subject: [PATCH] pinctrl: bcm2835: Use raw spinlock for RT compatibility -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz [Upstream commit 71dfaa749f2f7c1722ebf6716d3f797a04528cba] diff --git a/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch b/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch index 898a4e471..d8fbe8e70 100644 --- a/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch +++ b/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch @@ -1,7 +1,7 @@ From: John Stultz <johnstul@us.ibm.com> Date: Fri, 3 Jul 2009 08:29:58 -0500 Subject: posix-timers: Thread posix-cpu-timers on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz posix-cpu-timer code takes non -rt safe locks in hard irq context. Move it to a thread. diff --git a/debian/patches-rt/power-disable-highmem-on-rt.patch b/debian/patches-rt/power-disable-highmem-on-rt.patch index dd525e8d3..359d2deec 100644 --- a/debian/patches-rt/power-disable-highmem-on-rt.patch +++ b/debian/patches-rt/power-disable-highmem-on-rt.patch @@ -1,7 +1,7 @@ Subject: powerpc: Disable highmem on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 18 Jul 2011 17:08:34 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches-rt/power-use-generic-rwsem-on-rt.patch b/debian/patches-rt/power-use-generic-rwsem-on-rt.patch index 0d49bef24..44b6e62b2 100644 --- a/debian/patches-rt/power-use-generic-rwsem-on-rt.patch +++ b/debian/patches-rt/power-use-generic-rwsem-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: powerpc: Use generic rwsem on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Use generic code which uses rtmutex diff --git a/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch b/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch index a36dc29dc..2629d5acb 100644 --- a/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch +++ b/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch @@ -1,7 +1,7 @@ From: Bogdan Purcareata <bogdan.purcareata@freescale.com> Date: Fri, 24 Apr 2015 15:53:13 +0000 Subject: powerpc/kvm: Disable in-kernel MPIC emulation for PREEMPT_RT_FULL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz While converting the openpic emulation code to use a raw_spinlock_t enables guests to run on RT, there's still a performance issue. For interrupts sent in diff --git a/debian/patches-rt/powerpc-preempt-lazy-support.patch b/debian/patches-rt/powerpc-preempt-lazy-support.patch index f128483db..069f5b538 100644 --- a/debian/patches-rt/powerpc-preempt-lazy-support.patch +++ b/debian/patches-rt/powerpc-preempt-lazy-support.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 1 Nov 2012 10:14:11 +0100 Subject: powerpc: Add support for lazy preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Implement the powerpc pieces for lazy preempt. diff --git a/debian/patches-rt/preempt-lazy-support.patch b/debian/patches-rt/preempt-lazy-support.patch index 9b223a71e..c63a21b07 100644 --- a/debian/patches-rt/preempt-lazy-support.patch +++ b/debian/patches-rt/preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: sched: Add support for lazy preemption From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 26 Oct 2012 18:50:54 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz It has become an obsession to mitigate the determinism vs. throughput loss of RT. Looking at the mainline semantics of preemption points @@ -251,7 +251,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> goto again; --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -492,6 +492,48 @@ void resched_curr(struct rq *rq) +@@ -491,6 +491,48 @@ void resched_curr(struct rq *rq) trace_sched_wake_idle_without_ipi(cpu); } @@ -300,7 +300,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> void resched_cpu(int cpu) { struct rq *rq = cpu_rq(cpu); -@@ -2404,6 +2446,9 @@ int sched_fork(unsigned long clone_flags +@@ -2403,6 +2445,9 @@ int sched_fork(unsigned long clone_flags p->on_cpu = 0; #endif init_task_preempt_count(p); @@ -310,7 +310,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #ifdef CONFIG_SMP plist_node_init(&p->pushable_tasks, MAX_PRIO); RB_CLEAR_NODE(&p->pushable_dl_tasks); -@@ -3471,6 +3516,7 @@ static void __sched notrace __schedule(b +@@ -3470,6 +3515,7 @@ static void __sched notrace __schedule(b next = pick_next_task(rq, prev, &rf); clear_tsk_need_resched(prev); @@ -318,7 +318,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> clear_preempt_need_resched(); if (likely(prev != next)) { -@@ -3651,6 +3697,30 @@ static void __sched notrace preempt_sche +@@ -3650,6 +3696,30 @@ static void __sched notrace preempt_sche } while (need_resched()); } @@ -349,7 +349,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #ifdef CONFIG_PREEMPT /* * this is the entry point to schedule() from in-kernel preemption -@@ -3665,7 +3735,8 @@ asmlinkage __visible void __sched notrac +@@ -3664,7 +3734,8 @@ asmlinkage __visible void __sched notrac */ if (likely(!preemptible())) return; @@ -359,7 +359,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> preempt_schedule_common(); } NOKPROBE_SYMBOL(preempt_schedule); -@@ -3692,6 +3763,9 @@ asmlinkage __visible void __sched notrac +@@ -3691,6 +3762,9 @@ asmlinkage __visible void __sched notrac if (likely(!preemptible())) return; @@ -369,7 +369,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> do { /* * Because the function tracer can trace preempt_count_sub() -@@ -5460,7 +5534,9 @@ void init_idle(struct task_struct *idle, +@@ -5459,7 +5533,9 @@ void init_idle(struct task_struct *idle, /* Set the preempt count _outside_ the spinlocks! */ init_idle_preempt_count(idle, cpu); @@ -380,7 +380,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> /* * The idle tasks have their own, simple scheduling class: */ -@@ -7182,6 +7258,7 @@ void migrate_disable(void) +@@ -7181,6 +7257,7 @@ void migrate_disable(void) } preempt_disable(); @@ -388,7 +388,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> pin_current_cpu(); migrate_disable_update_cpus_allowed(p); -@@ -7249,6 +7326,7 @@ void migrate_enable(void) +@@ -7248,6 +7325,7 @@ void migrate_enable(void) arg.dest_cpu = dest_cpu; unpin_current_cpu(); @@ -396,7 +396,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> preempt_enable(); stop_one_cpu(task_cpu(p), migration_cpu_stop, &arg); tlb_migrate_finish(p->mm); -@@ -7257,6 +7335,7 @@ void migrate_enable(void) +@@ -7256,6 +7334,7 @@ void migrate_enable(void) } } unpin_current_cpu(); @@ -442,7 +442,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } static __always_inline -@@ -5037,7 +5037,7 @@ static void hrtick_start_fair(struct rq +@@ -5039,7 +5039,7 @@ static void hrtick_start_fair(struct rq if (delta < 0) { if (rq->curr == p) @@ -451,7 +451,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> return; } hrtick_start(rq, delta); -@@ -6612,7 +6612,7 @@ static void check_preempt_wakeup(struct +@@ -6614,7 +6614,7 @@ static void check_preempt_wakeup(struct return; preempt: @@ -460,7 +460,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> /* * Only set the backward buddy when the current task is still * on the rq. This can happen when a wakeup gets interleaved -@@ -9723,7 +9723,7 @@ static void task_fork_fair(struct task_s +@@ -9725,7 +9725,7 @@ static void task_fork_fair(struct task_s * 'current' within the tree based on its new key value. */ swap(curr->vruntime, se->vruntime); @@ -469,7 +469,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } se->vruntime -= cfs_rq->min_vruntime; -@@ -9747,7 +9747,7 @@ prio_changed_fair(struct rq *rq, struct +@@ -9749,7 +9749,7 @@ prio_changed_fair(struct rq *rq, struct */ if (rq->curr == p) { if (p->prio > oldprio) @@ -492,7 +492,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> /* --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h -@@ -1639,6 +1639,15 @@ extern void reweight_task(struct task_st +@@ -1638,6 +1638,15 @@ extern void reweight_task(struct task_st extern void resched_curr(struct rq *rq); extern void resched_cpu(int cpu); diff --git a/debian/patches-rt/preempt-nort-rt-variants.patch b/debian/patches-rt/preempt-nort-rt-variants.patch index 59b072c5f..09d615437 100644 --- a/debian/patches-rt/preempt-nort-rt-variants.patch +++ b/debian/patches-rt/preempt-nort-rt-variants.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 24 Jul 2009 12:38:56 +0200 Subject: preempt: Provide preempt_*_(no)rt variants -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz RT needs a few preempt_disable/enable points which are not necessary otherwise. Implement variants to avoid #ifdeffery. diff --git a/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch b/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch index 844768b12..4b9402da9 100644 --- a/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch +++ b/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch @@ -1,7 +1,7 @@ Subject: printk: Add "force_early_printk" boot param to help with debugging From: Peter Zijlstra <peterz@infradead.org> Date: Fri, 02 Sep 2011 14:41:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Gives me an option to screw printk and actually see what the machine says. diff --git a/debian/patches-rt/printk-kill.patch b/debian/patches-rt/printk-kill.patch index edc5a63ee..4b28c4384 100644 --- a/debian/patches-rt/printk-kill.patch +++ b/debian/patches-rt/printk-kill.patch @@ -1,7 +1,7 @@ Subject: printk: Add a printk kill switch From: Ingo Molnar <mingo@elte.hu> Date: Fri, 22 Jul 2011 17:58:40 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Add a prinkt-kill-switch. This is used from (NMI) watchdog to ensure that it does not dead-lock with the early printk code. diff --git a/debian/patches-rt/printk-rt-aware.patch b/debian/patches-rt/printk-rt-aware.patch index e4a987d42..6d9f71f47 100644 --- a/debian/patches-rt/printk-rt-aware.patch +++ b/debian/patches-rt/printk-rt-aware.patch @@ -1,7 +1,7 @@ Subject: printk: Make rt aware From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 19 Sep 2012 14:50:37 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Drop the lock before calling the console driver and do not disable interrupts while printing to a serial console. diff --git a/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch b/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch index 3e48b3068..064739b9d 100644 --- a/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch +++ b/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 29 Aug 2013 18:21:04 +0200 Subject: ptrace: fix ptrace vs tasklist_lock race -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz As explained by Alexander Fyodorov <halcy@yandex.ru>: @@ -116,7 +116,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> spin_unlock_irq(&task->sighand->siglock); --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -1348,6 +1348,18 @@ int migrate_swap(struct task_struct *cur +@@ -1347,6 +1347,18 @@ int migrate_swap(struct task_struct *cur } #endif /* CONFIG_NUMA_BALANCING */ @@ -135,7 +135,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * wait_task_inactive - wait for a thread to unschedule. * -@@ -1392,7 +1404,7 @@ unsigned long wait_task_inactive(struct +@@ -1391,7 +1403,7 @@ unsigned long wait_task_inactive(struct * is actually now running somewhere else! */ while (task_running(rq, p)) { @@ -144,7 +144,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> return 0; cpu_relax(); } -@@ -1407,7 +1419,8 @@ unsigned long wait_task_inactive(struct +@@ -1406,7 +1418,8 @@ unsigned long wait_task_inactive(struct running = task_running(rq, p); queued = task_on_rq_queued(p); ncsw = 0; diff --git a/debian/patches-rt/radix-tree-use-local-locks.patch b/debian/patches-rt/radix-tree-use-local-locks.patch index 50f6065a4..1db00e80f 100644 --- a/debian/patches-rt/radix-tree-use-local-locks.patch +++ b/debian/patches-rt/radix-tree-use-local-locks.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 25 Jan 2017 16:34:27 +0100 Subject: [PATCH] radix-tree: use local locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The preload functionality uses per-CPU variables and preempt-disable to ensure that it does not switch CPUs during its usage. This patch adds diff --git a/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch b/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch index d956cd74d..6f93903d9 100644 --- a/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch +++ b/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 12 May 2017 15:46:17 +0200 Subject: [PATCH] random: avoid preempt_disable()ed section -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz extract_crng() will use sleeping locks while in a preempt_disable() section due to get_cpu_var(). diff --git a/debian/patches-rt/random-make-it-work-on-rt.patch b/debian/patches-rt/random-make-it-work-on-rt.patch index 5a6706a58..ca8d0bc71 100644 --- a/debian/patches-rt/random-make-it-work-on-rt.patch +++ b/debian/patches-rt/random-make-it-work-on-rt.patch @@ -1,7 +1,7 @@ Subject: random: Make it work on rt From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 21 Aug 2012 20:38:50 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Delegate the random insertion to the forced threaded interrupt handler. Store the return IP of the hard interrupt handler in the irq @@ -74,7 +74,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> static int hv_ce_set_next_event(unsigned long delta, --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c -@@ -991,6 +991,8 @@ static void vmbus_isr(void) +@@ -1011,6 +1011,8 @@ static void vmbus_isr(void) void *page_addr = hv_cpu->synic_event_page; struct hv_message *msg; union hv_synic_event_flags *event; @@ -83,7 +83,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> bool handled = false; if (unlikely(page_addr == NULL)) -@@ -1034,7 +1036,7 @@ static void vmbus_isr(void) +@@ -1054,7 +1056,7 @@ static void vmbus_isr(void) tasklet_schedule(&hv_cpu->msg_dpc); } diff --git a/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch b/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch index c4d0e9f8f..95e1f6e08 100644 --- a/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch +++ b/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch @@ -1,7 +1,7 @@ From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Date: Mon, 4 Nov 2013 13:21:10 -0800 Subject: rcu: Eliminate softirq processing from rcutree -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Running RCU out of softirq is a problem for some workloads that would like to manage RCU core processing independently of other softirq work, diff --git a/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch b/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch index 95ec4eaac..7c7ea788a 100644 --- a/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch +++ b/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch @@ -1,7 +1,7 @@ Subject: rcu: Disable RCU_FAST_NO_HZ on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 28 Oct 2012 13:26:09 +0000 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz This uses a timer_list timer from the irq disabled guts of the idle code. Disable it for now to prevent wreckage. diff --git a/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch b/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch index db1f5bd94..12ef61a26 100644 --- a/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch +++ b/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch @@ -1,7 +1,7 @@ From: Julia Cartwright <julia@ni.com> Date: Wed, 12 Oct 2016 11:21:14 -0500 Subject: [PATCH] rcu: enable rcu_normal_after_boot by default for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The forcing of an expedited grace period is an expensive and very RT-application unfriendly operation, as it forcibly preempts all running diff --git a/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch b/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch index 151f2676f..95c05d235 100644 --- a/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch +++ b/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 21 Mar 2014 20:19:05 +0100 Subject: rcu: make RCU_BOOST default on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Since it is no longer invoked from the softirq people run into OOM more often if the priority of the RCU thread is too low. Making boosting diff --git a/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch b/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch index 245a8c19a..ddb2ab955 100644 --- a/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch +++ b/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch @@ -1,7 +1,7 @@ Subject: rcu: Merge RCU-bh into RCU-preempt Date: Wed, 5 Oct 2011 11:59:38 -0700 From: Thomas Gleixner <tglx@linutronix.de> -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The Linux kernel has long RCU-bh read-side critical sections that intolerably increase scheduling latency under mainline's RCU-bh rules, diff --git a/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch b/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch index 2e9cf4065..ecf0fcfc2 100644 --- a/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch +++ b/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch @@ -1,7 +1,7 @@ Subject: ARM: Initialize split page table locks for vector page From: Frank Rowand <frank.rowand@am.sony.com> Date: Sat, 1 Oct 2011 18:58:13 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Without this patch, ARM can not use SPLIT_PTLOCK_CPUS if PREEMPT_RT_FULL=y because vectors_user_mapping() creates a diff --git a/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch b/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch index e0680b46d..6a9f8e287 100644 --- a/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch +++ b/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch @@ -1,7 +1,7 @@ From: Daniel Bristot de Oliveira <bristot@redhat.com> Date: Mon, 26 Jun 2017 17:07:15 +0200 Subject: rt: Increase/decrease the nr of migratory tasks when enabling/disabling migration -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There is a problem in the migrate_disable()/enable() implementation regarding the number of migratory tasks in the rt/dl RQs. The problem @@ -81,7 +81,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -7139,6 +7139,47 @@ const u32 sched_prio_to_wmult[40] = { +@@ -7138,6 +7138,47 @@ const u32 sched_prio_to_wmult[40] = { #if defined(CONFIG_PREEMPT_COUNT) && defined(CONFIG_SMP) @@ -129,7 +129,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> void migrate_disable(void) { struct task_struct *p = current; -@@ -7162,10 +7203,9 @@ void migrate_disable(void) +@@ -7161,10 +7202,9 @@ void migrate_disable(void) } preempt_disable(); @@ -142,7 +142,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> preempt_enable(); } -@@ -7197,9 +7237,8 @@ void migrate_enable(void) +@@ -7196,9 +7236,8 @@ void migrate_enable(void) preempt_disable(); diff --git a/debian/patches-rt/rt-introduce-cpu-chill.patch b/debian/patches-rt/rt-introduce-cpu-chill.patch index 70f12f36a..3f5c4f776 100644 --- a/debian/patches-rt/rt-introduce-cpu-chill.patch +++ b/debian/patches-rt/rt-introduce-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: rt: Introduce cpu_chill() From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 07 Mar 2012 20:51:03 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Add cpu_chill() to replace cpu_relax(). cpu_chill() diff --git a/debian/patches-rt/rt-local-irq-lock.patch b/debian/patches-rt/rt-local-irq-lock.patch index 60668f8af..26d0117be 100644 --- a/debian/patches-rt/rt-local-irq-lock.patch +++ b/debian/patches-rt/rt-local-irq-lock.patch @@ -1,7 +1,7 @@ Subject: rt: Add local irq locks From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 20 Jun 2011 09:03:47 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Introduce locallock. For !RT this maps to preempt_disable()/ local_irq_disable() so there is not much that changes. For RT this will diff --git a/debian/patches-rt/rt-preempt-base-config.patch b/debian/patches-rt/rt-preempt-base-config.patch index 99dad099a..381aa4222 100644 --- a/debian/patches-rt/rt-preempt-base-config.patch +++ b/debian/patches-rt/rt-preempt-base-config.patch @@ -1,7 +1,7 @@ Subject: rt: Provide PREEMPT_RT_BASE config switch From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 17 Jun 2011 12:39:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Introduce PREEMPT_RT_BASE which enables parts of PREEMPT_RT_FULL. Forces interrupt threading and enables some of the RT diff --git a/debian/patches-rt/rt-serial-warn-fix.patch b/debian/patches-rt/rt-serial-warn-fix.patch index 2f311d3fd..62d86993e 100644 --- a/debian/patches-rt/rt-serial-warn-fix.patch +++ b/debian/patches-rt/rt-serial-warn-fix.patch @@ -1,7 +1,7 @@ Subject: rt: Improve the serial console PASS_LIMIT From: Ingo Molnar <mingo@elte.hu> Date: Wed Dec 14 13:05:54 CET 2011 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Beyond the warning: diff --git a/debian/patches-rt/rtmutex-Make-lock_killable-work.patch b/debian/patches-rt/rtmutex-Make-lock_killable-work.patch index 043d22a74..177999c04 100644 --- a/debian/patches-rt/rtmutex-Make-lock_killable-work.patch +++ b/debian/patches-rt/rtmutex-Make-lock_killable-work.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Sat, 1 Apr 2017 12:50:59 +0200 Subject: [PATCH] rtmutex: Make lock_killable work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Locking an rt mutex killable does not work because signal handling is restricted to TASK_INTERRUPTIBLE. diff --git a/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch b/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch index 149861aca..1b2f92eee 100644 --- a/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch +++ b/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 16:14:22 +0200 Subject: rtmutex: Provide rt_mutex_slowlock_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz This is the inner-part of rt_mutex_slowlock(), required for rwsem-rt. diff --git a/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch b/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch index 45b9e0e8e..0e1715010 100644 --- a/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch +++ b/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:17:03 +0200 Subject: rtmutex: add mutex implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> diff --git a/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch b/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch index 5e7a67972..b29f1cc1a 100644 --- a/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch +++ b/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:18:06 +0200 Subject: rtmutex: add rwlock implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The implementation is bias-based, similar to the rwsem implementation. diff --git a/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch b/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch index 8faf42b87..39a611f85 100644 --- a/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch +++ b/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:28:34 +0200 Subject: rtmutex: add rwsem implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The RT specific R/W semaphore implementation restricts the number of readers to one because a writer cannot block on multiple readers and inherit its diff --git a/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch b/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch index 4c194ae0f..dde9c2fff 100644 --- a/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch +++ b/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:11:19 +0200 Subject: rtmutex: add sleeping lock implementation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> @@ -392,7 +392,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/futex.c +++ b/kernel/futex.c -@@ -1414,6 +1414,7 @@ static int wake_futex_pi(u32 __user *uad +@@ -1471,6 +1471,7 @@ static int wake_futex_pi(u32 __user *uad struct task_struct *new_owner; bool postunlock = false; DEFINE_WAKE_Q(wake_q); @@ -400,7 +400,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> int ret = 0; new_owner = rt_mutex_next_owner(&pi_state->pi_mutex); -@@ -1475,13 +1476,13 @@ static int wake_futex_pi(u32 __user *uad +@@ -1532,13 +1533,13 @@ static int wake_futex_pi(u32 __user *uad pi_state->owner = new_owner; raw_spin_unlock(&new_owner->pi_lock); @@ -417,7 +417,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> return ret; } -@@ -2793,7 +2794,7 @@ static int futex_lock_pi(u32 __user *uad +@@ -2850,7 +2851,7 @@ static int futex_lock_pi(u32 __user *uad goto no_block; } @@ -426,7 +426,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * On PREEMPT_RT_FULL, when hb->lock becomes an rt_mutex, we must not -@@ -3165,7 +3166,7 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3222,7 +3223,7 @@ static int futex_wait_requeue_pi(u32 __u * The waiter is allocated on our stack, manipulated by the requeue * code while we sleep on uaddr. */ @@ -1122,7 +1122,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> # include "rtmutex-debug.h" --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -401,9 +401,15 @@ static bool set_nr_if_polling(struct tas +@@ -400,9 +400,15 @@ static bool set_nr_if_polling(struct tas #endif #endif @@ -1140,7 +1140,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * Atomically grab the task, if ->wake_q is !nil already it means -@@ -425,24 +431,32 @@ void wake_q_add(struct wake_q_head *head +@@ -424,24 +430,32 @@ void wake_q_add(struct wake_q_head *head head->lastp = &node->next; } diff --git a/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch b/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch index 2b1a84f81..368a1b669 100644 --- a/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch +++ b/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 12 Oct 2017 17:34:38 +0200 Subject: rtmutex: add ww_mutex addon for mutex-rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- diff --git a/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch b/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch index bd47ccc38..fb1f48c3f 100644 --- a/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch +++ b/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 21 Sep 2017 14:25:13 +0200 Subject: [PATCH] rtmutex: annotate sleeping lock context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The RCU code complains on schedule() within a rcu_readlock() section. The valid scenario on -RT is if a sleeping is held. In order to suppress @@ -240,7 +240,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -7308,4 +7308,49 @@ void migrate_enable(void) +@@ -7307,4 +7307,49 @@ void migrate_enable(void) preempt_enable(); } EXPORT_SYMBOL(migrate_enable); diff --git a/debian/patches-rt/rtmutex-avoid-include-hell.patch b/debian/patches-rt/rtmutex-avoid-include-hell.patch index 3c88eb029..eeb0d14b2 100644 --- a/debian/patches-rt/rtmutex-avoid-include-hell.patch +++ b/debian/patches-rt/rtmutex-avoid-include-hell.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Avoid include hell From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 29 Jun 2011 20:06:39 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Include only the required raw types. This avoids pulling in the complete spinlock header which in turn requires rtmutex.h at some point. diff --git a/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch b/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch index 37378b780..996427268 100644 --- a/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch +++ b/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 16:36:39 +0200 Subject: rtmutex: export lockdep-less version of rt_mutex's lock, trylock and unlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Required for lock implementation ontop of rtmutex. diff --git a/debian/patches-rt/rtmutex-futex-prepare-rt.patch b/debian/patches-rt/rtmutex-futex-prepare-rt.patch index 9cfe4f741..0078acace 100644 --- a/debian/patches-rt/rtmutex-futex-prepare-rt.patch +++ b/debian/patches-rt/rtmutex-futex-prepare-rt.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Handle the various new futex race conditions From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 10 Jun 2011 11:04:15 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz RT opens a few new interesting race conditions in the rtmutex/futex combo due to futex hash bucket lock being a 'sleeping' spinlock and @@ -16,7 +16,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/kernel/futex.c +++ b/kernel/futex.c -@@ -2086,6 +2086,16 @@ static int futex_requeue(u32 __user *uad +@@ -2143,6 +2143,16 @@ static int futex_requeue(u32 __user *uad requeue_pi_wake_futex(this, &key2, hb2); drop_count++; continue; @@ -33,7 +33,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } else if (ret) { /* * rt_mutex_start_proxy_lock() detected a -@@ -3126,7 +3136,7 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3183,7 +3193,7 @@ static int futex_wait_requeue_pi(u32 __u struct hrtimer_sleeper timeout, *to = NULL; struct futex_pi_state *pi_state = NULL; struct rt_mutex_waiter rt_waiter; @@ -42,7 +42,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> union futex_key key2 = FUTEX_KEY_INIT; struct futex_q q = futex_q_init; int res, ret; -@@ -3184,20 +3194,55 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3241,20 +3251,55 @@ static int futex_wait_requeue_pi(u32 __u /* Queue the futex_q, drop the hb lock, wait for wakeup. */ futex_wait_queue_me(hb, &q, to); @@ -109,7 +109,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> /* Check if the requeue code acquired the second futex for us. */ if (!q.rt_waiter) { -@@ -3206,7 +3251,8 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3263,7 +3308,8 @@ static int futex_wait_requeue_pi(u32 __u * did a lock-steal - fix up the PI-state in that case. */ if (q.pi_state && (q.pi_state->owner != current)) { @@ -119,7 +119,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> ret = fixup_pi_state_owner(uaddr2, &q, current); if (ret && rt_mutex_owner(&q.pi_state->pi_mutex) == current) { pi_state = q.pi_state; -@@ -3217,7 +3263,7 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3274,7 +3320,7 @@ static int futex_wait_requeue_pi(u32 __u * the requeue_pi() code acquired for us. */ put_pi_state(q.pi_state); @@ -128,7 +128,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } } else { struct rt_mutex *pi_mutex; -@@ -3231,7 +3277,8 @@ static int futex_wait_requeue_pi(u32 __u +@@ -3288,7 +3334,8 @@ static int futex_wait_requeue_pi(u32 __u pi_mutex = &q.pi_state->pi_mutex; ret = rt_mutex_wait_proxy_lock(pi_mutex, to, &rt_waiter); diff --git a/debian/patches-rt/rtmutex-lock-killable.patch b/debian/patches-rt/rtmutex-lock-killable.patch index 5dc137c3d..c9f643697 100644 --- a/debian/patches-rt/rtmutex-lock-killable.patch +++ b/debian/patches-rt/rtmutex-lock-killable.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Add rtmutex_lock_killable() From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 09 Jun 2011 11:43:52 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Add "killable" type to rtmutex. We need this since rtmutex are used as "normal" mutexes which do use this type. diff --git a/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch b/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch index 3e693889d..5b3e0883b 100644 --- a/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch +++ b/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed 02 Dec 2015 11:34:07 +0100 Subject: rtmutex: trylock is okay on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz non-RT kernel could deadlock on rt_mutex_trylock() in softirq context. On -RT we don't run softirqs in IRQ context but in thread context so it is diff --git a/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch b/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch index 0df4013d2..b99f43f54 100644 --- a/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch +++ b/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:31:14 +0200 Subject: rtmutex: wire up RT's locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> diff --git a/debian/patches-rt/rtmutex_dont_include_rcu.patch b/debian/patches-rt/rtmutex_dont_include_rcu.patch index 7c4409581..880cd4219 100644 --- a/debian/patches-rt/rtmutex_dont_include_rcu.patch +++ b/debian/patches-rt/rtmutex_dont_include_rcu.patch @@ -1,6 +1,6 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Subject: rbtree: don't include the rcu header -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The RCU header pulls in spinlock.h and fails due not yet defined types: diff --git a/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch b/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch index 851ed26e6..1cfef1aaf 100644 --- a/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch +++ b/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de> Date: Sun, 19 Aug 2018 08:28:35 +0200 Subject: [PATCH] sched: Allow pinned user tasks to be awakened to the CPU they pinned -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Since commit 7af443ee16976 ("sched/core: Require cpu_active() in select_task_rq(), for user tasks") select_fallback_rq() will BUG() if @@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -903,7 +903,7 @@ static inline bool is_cpu_allowed(struct +@@ -902,7 +902,7 @@ static inline bool is_cpu_allowed(struct if (!cpumask_test_cpu(cpu, p->cpus_ptr)) return false; diff --git a/debian/patches-rt/sched-delay-put-task.patch b/debian/patches-rt/sched-delay-put-task.patch index 510915d4b..6d6b2e230 100644 --- a/debian/patches-rt/sched-delay-put-task.patch +++ b/debian/patches-rt/sched-delay-put-task.patch @@ -1,7 +1,7 @@ Subject: sched: Move task_struct cleanup to RCU From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 31 May 2011 16:59:16 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz __put_task_struct() does quite some expensive work. We don't want to burden random tasks with that. diff --git a/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch b/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch index 66ea544a4..1d893e6a9 100644 --- a/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch +++ b/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch @@ -1,7 +1,7 @@ Subject: sched: Disable CONFIG_RT_GROUP_SCHED on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 18 Jul 2011 17:03:52 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Carsten reported problems when running: @@ -19,7 +19,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/init/Kconfig +++ b/init/Kconfig -@@ -776,6 +776,7 @@ config CFS_BANDWIDTH +@@ -781,6 +781,7 @@ config CFS_BANDWIDTH config RT_GROUP_SCHED bool "Group scheduling for SCHED_RR/FIFO" depends on CGROUP_SCHED diff --git a/debian/patches-rt/sched-disable-ttwu-queue.patch b/debian/patches-rt/sched-disable-ttwu-queue.patch index ba90b4c23..01e1d6b47 100644 --- a/debian/patches-rt/sched-disable-ttwu-queue.patch +++ b/debian/patches-rt/sched-disable-ttwu-queue.patch @@ -1,7 +1,7 @@ Subject: sched: Disable TTWU_QUEUE on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 13 Sep 2011 16:42:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The queued remote wakeup mechanism can introduce rather large latencies if the number of migrated tasks is high. Disable it for RT. diff --git a/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch b/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch new file mode 100644 index 000000000..a1acdc86d --- /dev/null +++ b/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch @@ -0,0 +1,28 @@ +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Tue, 8 Jan 2019 12:31:06 +0100 +Subject: [PATCH] sched/fair: Make the hrtimers non-hard again +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz + +Since commit "sched/fair: Robustify CFS-bandwidth timer locking" both +hrtimer can run in softirq context because now interrupts are disabled +as part of the locking procedure. + +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + kernel/sched/fair.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/kernel/sched/fair.c ++++ b/kernel/sched/fair.c +@@ -4880,9 +4880,9 @@ void init_cfs_bandwidth(struct cfs_bandw + cfs_b->period = ns_to_ktime(default_cfs_period()); + + INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); +- hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED_HARD); ++ hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED); + cfs_b->period_timer.function = sched_cfs_period_timer; +- hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); ++ hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + cfs_b->slack_timer.function = sched_cfs_slack_timer; + cfs_b->distribute_running = 0; + } diff --git a/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch b/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch new file mode 100644 index 000000000..217d8a3c3 --- /dev/null +++ b/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch @@ -0,0 +1,142 @@ +From: Peter Zijlstra <peterz@infradead.org> +Date: Mon, 7 Jan 2019 13:52:31 +0100 +Subject: [PATCH] sched/fair: Robustify CFS-bandwidth timer locking +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz + +Traditionally hrtimer callbacks were run with IRQs disabled, but with +the introduction of HRTIMER_MODE_SOFT it is possible they run from +SoftIRQ context, which does _NOT_ have IRQs disabled. + +Allow for the CFS bandwidth timers (period_timer and slack_timer) to +be ran from SoftIRQ context; this entails removing the assumption that +IRQs are already disabled from the locking. + +While mainline doesn't strictly need this, -RT forces all timers not +explicitly marked with MODE_HARD into MODE_SOFT and trips over this. +And marking these timers as MODE_HARD doesn't make sense as they're +not required for RT operation and can potentially be quite expensive. + +Cc: Ingo Molnar <mingo@redhat.com> +Cc: Thomas Gleixner <tglx@linutronix.de> +Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Reported-by: Tom Putzeys <tom.putzeys@be.atlascopco.com> +Tested-by: Mike Galbraith <efault@gmx.de> +Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> +Link: https://lkml.kernel.org/r/20190107125231.GE14122@hirez.programming.kicks-ass.net +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + kernel/sched/fair.c | 30 ++++++++++++++++-------------- + 1 file changed, 16 insertions(+), 14 deletions(-) + +--- a/kernel/sched/fair.c ++++ b/kernel/sched/fair.c +@@ -4554,7 +4554,7 @@ static u64 distribute_cfs_runtime(struct + struct rq *rq = rq_of(cfs_rq); + struct rq_flags rf; + +- rq_lock(rq, &rf); ++ rq_lock_irqsave(rq, &rf); + if (!cfs_rq_throttled(cfs_rq)) + goto next; + +@@ -4571,7 +4571,7 @@ static u64 distribute_cfs_runtime(struct + unthrottle_cfs_rq(cfs_rq); + + next: +- rq_unlock(rq, &rf); ++ rq_unlock_irqrestore(rq, &rf); + + if (!remaining) + break; +@@ -4587,7 +4587,7 @@ static u64 distribute_cfs_runtime(struct + * period the timer is deactivated until scheduling resumes; cfs_b->idle is + * used to track this state. + */ +-static int do_sched_cfs_period_timer(struct cfs_bandwidth *cfs_b, int overrun) ++static int do_sched_cfs_period_timer(struct cfs_bandwidth *cfs_b, int overrun, unsigned long flags) + { + u64 runtime, runtime_expires; + int throttled; +@@ -4629,11 +4629,11 @@ static int do_sched_cfs_period_timer(str + while (throttled && cfs_b->runtime > 0 && !cfs_b->distribute_running) { + runtime = cfs_b->runtime; + cfs_b->distribute_running = 1; +- raw_spin_unlock(&cfs_b->lock); ++ raw_spin_unlock_irqrestore(&cfs_b->lock, flags); + /* we can't nest cfs_b->lock while distributing bandwidth */ + runtime = distribute_cfs_runtime(cfs_b, runtime, + runtime_expires); +- raw_spin_lock(&cfs_b->lock); ++ raw_spin_lock_irqsave(&cfs_b->lock, flags); + + cfs_b->distribute_running = 0; + throttled = !list_empty(&cfs_b->throttled_cfs_rq); +@@ -4742,17 +4742,18 @@ static __always_inline void return_cfs_r + static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b) + { + u64 runtime = 0, slice = sched_cfs_bandwidth_slice(); ++ unsigned long flags; + u64 expires; + + /* confirm we're still not at a refresh boundary */ +- raw_spin_lock(&cfs_b->lock); ++ raw_spin_lock_irqsave(&cfs_b->lock, flags); + if (cfs_b->distribute_running) { +- raw_spin_unlock(&cfs_b->lock); ++ raw_spin_unlock_irqrestore(&cfs_b->lock, flags); + return; + } + + if (runtime_refresh_within(cfs_b, min_bandwidth_expiration)) { +- raw_spin_unlock(&cfs_b->lock); ++ raw_spin_unlock_irqrestore(&cfs_b->lock, flags); + return; + } + +@@ -4763,18 +4764,18 @@ static void do_sched_cfs_slack_timer(str + if (runtime) + cfs_b->distribute_running = 1; + +- raw_spin_unlock(&cfs_b->lock); ++ raw_spin_unlock_irqrestore(&cfs_b->lock, flags); + + if (!runtime) + return; + + runtime = distribute_cfs_runtime(cfs_b, runtime, expires); + +- raw_spin_lock(&cfs_b->lock); ++ raw_spin_lock_irqsave(&cfs_b->lock, flags); + if (expires == cfs_b->runtime_expires) + cfs_b->runtime -= min(runtime, cfs_b->runtime); + cfs_b->distribute_running = 0; +- raw_spin_unlock(&cfs_b->lock); ++ raw_spin_unlock_irqrestore(&cfs_b->lock, flags); + } + + /* +@@ -4852,20 +4853,21 @@ static enum hrtimer_restart sched_cfs_pe + { + struct cfs_bandwidth *cfs_b = + container_of(timer, struct cfs_bandwidth, period_timer); ++ unsigned long flags; + int overrun; + int idle = 0; + +- raw_spin_lock(&cfs_b->lock); ++ raw_spin_lock_irqsave(&cfs_b->lock, flags); + for (;;) { + overrun = hrtimer_forward_now(timer, cfs_b->period); + if (!overrun) + break; + +- idle = do_sched_cfs_period_timer(cfs_b, overrun); ++ idle = do_sched_cfs_period_timer(cfs_b, overrun, flags); + } + if (idle) + cfs_b->period_active = 0; +- raw_spin_unlock(&cfs_b->lock); ++ raw_spin_unlock_irqrestore(&cfs_b->lock, flags); + + return idle ? HRTIMER_NORESTART : HRTIMER_RESTART; + } diff --git a/debian/patches-rt/sched-limit-nr-migrate.patch b/debian/patches-rt/sched-limit-nr-migrate.patch index a18703751..981d29b3c 100644 --- a/debian/patches-rt/sched-limit-nr-migrate.patch +++ b/debian/patches-rt/sched-limit-nr-migrate.patch @@ -1,7 +1,7 @@ Subject: sched: Limit the number of task migrations per batch From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 06 Jun 2011 12:12:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Put an upper limit on the number of tasks which are migrated per batch to avoid large latencies. diff --git a/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch b/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch index 7e4e29619..fb5a4ae02 100644 --- a/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch +++ b/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch @@ -1,7 +1,7 @@ Subject: sched: Do not account rcu_preempt_depth on RT in might_sleep() From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 07 Jun 2011 09:19:06 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz RT changes the rcu_preempt_depth semantics, so we cannot check for it in might_sleep(). @@ -37,7 +37,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> /* Internal to kernel */ --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -6155,7 +6155,7 @@ void __init sched_init(void) +@@ -6154,7 +6154,7 @@ void __init sched_init(void) #ifdef CONFIG_DEBUG_ATOMIC_SLEEP static inline int preempt_count_equals(int preempt_offset) { diff --git a/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch b/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch index 86200190e..b9c2a7b97 100644 --- a/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch +++ b/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 9 Oct 2018 17:34:50 +0200 Subject: [PATCH] sched/migrate_disable: Add export_symbol_gpl for __migrate_disabled -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Jonathan reported that lttng/modules can't use __migrate_disabled(). This function is only used by sched/core itself and the tracing @@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -1012,6 +1012,7 @@ int __migrate_disabled(struct task_struc +@@ -1011,6 +1011,7 @@ int __migrate_disabled(struct task_struc { return p->migrate_disable; } diff --git a/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch b/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch index 637417f78..fe3f33d0a 100644 --- a/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch +++ b/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 5 Jul 2018 14:44:51 +0200 Subject: [PATCH] sched/migrate_disable: fallback to preempt_disable() instead barrier() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On SMP + !RT migrate_disable() is still around. It is not part of spin_lock() anymore so it has almost no users. However the futex code has a workaround for @@ -90,7 +90,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> #endif --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -1030,7 +1030,7 @@ void set_cpus_allowed_common(struct task +@@ -1029,7 +1029,7 @@ void set_cpus_allowed_common(struct task p->nr_cpus_allowed = cpumask_weight(new_mask); } @@ -99,7 +99,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> int __migrate_disabled(struct task_struct *p) { return p->migrate_disable; -@@ -1070,7 +1070,7 @@ static void __do_set_cpus_allowed_tail(s +@@ -1069,7 +1069,7 @@ static void __do_set_cpus_allowed_tail(s void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask) { @@ -108,7 +108,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> if (__migrate_disabled(p)) { lockdep_assert_held(&p->pi_lock); -@@ -1143,7 +1143,7 @@ static int __set_cpus_allowed_ptr(struct +@@ -1142,7 +1142,7 @@ static int __set_cpus_allowed_ptr(struct if (cpumask_test_cpu(task_cpu(p), new_mask) || __migrate_disabled(p)) goto out; @@ -117,7 +117,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> if (__migrate_disabled(p)) { p->migrate_disable_update = 1; goto out; -@@ -7164,7 +7164,7 @@ const u32 sched_prio_to_wmult[40] = { +@@ -7163,7 +7163,7 @@ const u32 sched_prio_to_wmult[40] = { #undef CREATE_TRACE_POINTS @@ -126,7 +126,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> static inline void update_nr_migratory(struct task_struct *p, long delta) -@@ -7312,45 +7312,44 @@ EXPORT_SYMBOL(migrate_enable); +@@ -7311,45 +7311,44 @@ EXPORT_SYMBOL(migrate_enable); #elif !defined(CONFIG_SMP) && defined(CONFIG_PREEMPT_RT_BASE) void migrate_disable(void) { diff --git a/debian/patches-rt/sched-mmdrop-delayed.patch b/debian/patches-rt/sched-mmdrop-delayed.patch index 2421bd1a6..d16fdbdc7 100644 --- a/debian/patches-rt/sched-mmdrop-delayed.patch +++ b/debian/patches-rt/sched-mmdrop-delayed.patch @@ -1,7 +1,7 @@ Subject: sched: Move mmdrop to RCU on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 06 Jun 2011 12:20:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Takes sleeping locks and calls into the memory allocator, so nothing we want to do in task switch and oder atomic contexts. @@ -78,7 +78,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> struct mm_struct *mm; --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -2728,9 +2728,13 @@ static struct rq *finish_task_switch(str +@@ -2727,9 +2727,13 @@ static struct rq *finish_task_switch(str * provided by mmdrop(), * - a sync_core for SYNC_CORE. */ @@ -93,7 +93,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } if (unlikely(prev_state == TASK_DEAD)) { if (prev->sched_class->task_dead) -@@ -5558,6 +5562,8 @@ void sched_setnuma(struct task_struct *p +@@ -5557,6 +5561,8 @@ void sched_setnuma(struct task_struct *p #endif /* CONFIG_NUMA_BALANCING */ #ifdef CONFIG_HOTPLUG_CPU @@ -102,7 +102,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> /* * Ensure that the idle task is using init_mm right before its CPU goes * offline. -@@ -5573,7 +5579,11 @@ void idle_task_exit(void) +@@ -5572,7 +5578,11 @@ void idle_task_exit(void) current->active_mm = &init_mm; finish_arch_post_lock_switch(); } @@ -115,7 +115,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } /* -@@ -5885,6 +5895,10 @@ int sched_cpu_dying(unsigned int cpu) +@@ -5884,6 +5894,10 @@ int sched_cpu_dying(unsigned int cpu) update_max_interval(); nohz_balance_exit_idle(rq); hrtick_clear(rq); diff --git a/debian/patches-rt/sched-rt-mutex-wakeup.patch b/debian/patches-rt/sched-rt-mutex-wakeup.patch index 2cd83108c..d73f9f052 100644 --- a/debian/patches-rt/sched-rt-mutex-wakeup.patch +++ b/debian/patches-rt/sched-rt-mutex-wakeup.patch @@ -1,7 +1,7 @@ Subject: sched: Add saved_state for tasks blocked on sleeping locks From: Thomas Gleixner <tglx@linutronix.de> Date: Sat, 25 Jun 2011 09:21:04 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Spinlocks are state preserving in !RT. RT changes the state when a task gets blocked on a lock. So we need to remember the state before @@ -37,7 +37,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #ifdef CONFIG_SMP --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -1998,8 +1998,27 @@ try_to_wake_up(struct task_struct *p, un +@@ -1997,8 +1997,27 @@ try_to_wake_up(struct task_struct *p, un */ raw_spin_lock_irqsave(&p->pi_lock, flags); smp_mb__after_spinlock(); @@ -66,7 +66,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> trace_sched_waking(p); -@@ -2163,6 +2182,18 @@ int wake_up_process(struct task_struct * +@@ -2162,6 +2181,18 @@ int wake_up_process(struct task_struct * } EXPORT_SYMBOL(wake_up_process); @@ -87,7 +87,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> return try_to_wake_up(p, state, 0); --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h -@@ -1444,6 +1444,7 @@ static inline int task_on_rq_migrating(s +@@ -1443,6 +1443,7 @@ static inline int task_on_rq_migrating(s #define WF_SYNC 0x01 /* Waker goes to sleep after wakeup */ #define WF_FORK 0x02 /* Child wakeup after fork */ #define WF_MIGRATED 0x4 /* Internal use, task got migrated */ diff --git a/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch b/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch index ccf363497..9866d945e 100644 --- a/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch +++ b/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch @@ -1,7 +1,7 @@ From: Steven Rostedt <rostedt@goodmis.org> Date: Mon, 18 Mar 2013 15:12:49 -0400 Subject: sched/workqueue: Only wake up idle workers if not blocked on sleeping spin lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz In -rt, most spin_locks() turn into mutexes. One of these spin_lock conversions is performed on the workqueue gcwq->lock. When the idle @@ -24,7 +24,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -3497,8 +3497,10 @@ static void __sched notrace __schedule(b +@@ -3496,8 +3496,10 @@ static void __sched notrace __schedule(b * If a worker went to sleep, notify and ask workqueue * whether it wants to wake up a task to maintain * concurrency. diff --git a/debian/patches-rt/scsi-fcoe-rt-aware.patch b/debian/patches-rt/scsi-fcoe-rt-aware.patch index 63998fc96..d25f648eb 100644 --- a/debian/patches-rt/scsi-fcoe-rt-aware.patch +++ b/debian/patches-rt/scsi-fcoe-rt-aware.patch @@ -1,7 +1,7 @@ Subject: scsi/fcoe: Make RT aware. From: Thomas Gleixner <tglx@linutronix.de> Date: Sat, 12 Nov 2011 14:00:48 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Do not disable preemption while taking sleeping locks. All user look safe for migrate_diable() only. diff --git a/debian/patches-rt/seqlock-prevent-rt-starvation.patch b/debian/patches-rt/seqlock-prevent-rt-starvation.patch index 63dc71335..7b08e5cb0 100644 --- a/debian/patches-rt/seqlock-prevent-rt-starvation.patch +++ b/debian/patches-rt/seqlock-prevent-rt-starvation.patch @@ -1,7 +1,7 @@ Subject: seqlock: Prevent rt starvation From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 22 Feb 2012 12:03:30 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz If a low prio writer gets preempted while holding the seqlock write locked, a high prio reader spins forever on RT. diff --git a/debian/patches-rt/series b/debian/patches-rt/series index 69646621f..44ec56de3 100644 --- a/debian/patches-rt/series +++ b/debian/patches-rt/series @@ -24,6 +24,7 @@ irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch kthread-convert-worker-lock-to-raw-spinlock.patch pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch crypto-caam-qi-simplify-CGR-allocation-freeing.patch +sched-fair-Robustify-CFS-bandwidth-timer-locking.patch ############################################################ # POSTED @@ -164,6 +165,7 @@ slub-disable-SLUB_CPU_PARTIAL.patch mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch mm-memcontrol-do_not_disable_irq.patch mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch +# check in next release if it is still required. x86-mm-pat-disable-preemption-__split_large_page-aft.patch # RADIX TREE @@ -189,6 +191,7 @@ time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch hrtimers-prepare-full-preemption.patch hrtimer-by-timers-by-default-into-the-softirq-context.patch +sched-fair-Make-the-hrtimers-non-hard-again.patch hrtimer-Move-schedule_work-call-to-helper-thread.patch hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch @@ -252,6 +255,7 @@ rtmutex-add-ww_mutex-addon-for-mutex-rt.patch # Allow to enable RT-FULL after sleeping spinlocks are wired up kconfig-preempt-rt-full.patch locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch +locking-rt-mutex-Flush-block-plug-on-__down_read.patch locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch ptrace-fix-ptrace-vs-tasklist_lock-race.patch rtmutex-annotate-sleeping-lock-context.patch diff --git a/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch b/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch index fa6c0c97f..3b1537121 100644 --- a/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch +++ b/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch @@ -1,7 +1,7 @@ Subject: signal: Revert ptrace preempt magic From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 21 Sep 2011 19:57:12 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Upstream commit '53da1d9456fe7f8 fix ptrace slowness' is nothing more than a bandaid around the ptrace design trainwreck. It's not a diff --git a/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch b/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch index 73593b9b4..6e0f42fec 100644 --- a/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch +++ b/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 3 Jul 2009 08:44:56 -0500 Subject: signals: Allow rt tasks to cache one sigqueue struct -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz To avoid allocation allow rt tasks to cache one sigqueue struct in task struct. diff --git a/debian/patches-rt/skbufhead-raw-lock.patch b/debian/patches-rt/skbufhead-raw-lock.patch index 853cfaa11..885fd5099 100644 --- a/debian/patches-rt/skbufhead-raw-lock.patch +++ b/debian/patches-rt/skbufhead-raw-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 12 Jul 2011 15:38:34 +0200 Subject: net: Use skbufhead with raw lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Use the rps lock as rawlock so we can keep irq-off regions. It looks low latency. However we can't kfree() from this context therefore we defer this diff --git a/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch b/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch index e1171dfc9..7c0283d7c 100644 --- a/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch +++ b/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 15 Apr 2015 19:00:47 +0200 Subject: slub: Disable SLUB_CPU_PARTIAL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915 |in_atomic(): 1, irqs_disabled(): 0, pid: 87, name: rcuop/7 @@ -37,7 +37,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/init/Kconfig +++ b/init/Kconfig -@@ -1692,7 +1692,7 @@ config SLAB_FREELIST_HARDENED +@@ -1697,7 +1697,7 @@ config SLAB_FREELIST_HARDENED config SLUB_CPU_PARTIAL default y diff --git a/debian/patches-rt/slub-enable-irqs-for-no-wait.patch b/debian/patches-rt/slub-enable-irqs-for-no-wait.patch index e54cf3815..5e4ed8e32 100644 --- a/debian/patches-rt/slub-enable-irqs-for-no-wait.patch +++ b/debian/patches-rt/slub-enable-irqs-for-no-wait.patch @@ -1,7 +1,7 @@ Subject: slub: Enable irqs for __GFP_WAIT From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 09 Jan 2013 12:08:15 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz SYSTEM_RUNNING might be too late for enabling interrupts. Allocations with GFP_WAIT can happen before that. So use this as an indicator. diff --git a/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch b/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch index 20089aa5d..faaf52fef 100644 --- a/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch +++ b/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch @@ -1,7 +1,7 @@ Subject: softirq: Disable softirq stacks for RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 18 Jul 2011 13:59:17 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Disable extra stacks for softirqs. We want to preempt softirqs and having them on special IRQ-stack does not make this easier. diff --git a/debian/patches-rt/softirq-preempt-fix-3-re.patch b/debian/patches-rt/softirq-preempt-fix-3-re.patch index 19acf8231..1da38c2a8 100644 --- a/debian/patches-rt/softirq-preempt-fix-3-re.patch +++ b/debian/patches-rt/softirq-preempt-fix-3-re.patch @@ -1,7 +1,7 @@ Subject: softirq: Check preemption after reenabling interrupts From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 13 Nov 2011 17:17:09 +0100 (CET) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz raise_softirq_irqoff() disables interrupts and wakes the softirq daemon, but after reenabling interrupts there is no preemption check, diff --git a/debian/patches-rt/softirq-split-locks.patch b/debian/patches-rt/softirq-split-locks.patch index 3c8145795..263fc5dae 100644 --- a/debian/patches-rt/softirq-split-locks.patch +++ b/debian/patches-rt/softirq-split-locks.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 04 Oct 2012 14:20:47 +0100 Subject: softirq: Split softirq locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The 3.x RT series removed the split softirq implementation in favour of pushing softirq processing into the context of the thread which diff --git a/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch b/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch index fea134b36..b1a028e9a 100644 --- a/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch +++ b/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 20 Jan 2016 16:34:17 +0100 Subject: softirq: split timer softirqs out of ksoftirqd -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The softirqd runs in -RT with SCHED_FIFO (prio 1) and deals mostly with timer wakeup which can not happen in hardirq context. The prio has been diff --git a/debian/patches-rt/spinlock-types-separate-raw.patch b/debian/patches-rt/spinlock-types-separate-raw.patch index 2a9b8bd67..b965227c3 100644 --- a/debian/patches-rt/spinlock-types-separate-raw.patch +++ b/debian/patches-rt/spinlock-types-separate-raw.patch @@ -1,7 +1,7 @@ Subject: spinlock: Split the lock types header From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 29 Jun 2011 19:34:01 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Split raw_spinlock into its own file and the remaining spinlock_t into its own non-RT header. The non-RT header will be replaced later by sleeping diff --git a/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch b/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch index bda99ba26..c6916c585 100644 --- a/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch +++ b/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch @@ -2,7 +2,7 @@ From: Julia Cartwright <julia@ni.com> Date: Mon, 7 May 2018 08:58:57 -0500 Subject: [PATCH] squashfs: make use of local lock in multi_cpu decompressor -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Currently, the squashfs multi_cpu decompressor makes use of get_cpu_ptr()/put_cpu_ptr(), which unconditionally disable preemption diff --git a/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch b/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch index a8636bd80..e9136f0d7 100644 --- a/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch +++ b/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 12 Oct 2017 18:37:12 +0200 Subject: [PATCH] srcu: replace local_irqsave() with a locallock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There are two instances which disable interrupts in order to become a stable this_cpu_ptr() pointer. The restore part is coupled with diff --git a/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch b/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch index 8767c5bba..392e14616 100644 --- a/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch +++ b/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 13 Sep 2017 14:43:41 +0200 Subject: [PATCH] srcu: use cpu_online() instead custom check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The current check via srcu_online is slightly racy because after looking at srcu_online there could be an interrupt that interrupted us long diff --git a/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch b/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch index b9d53c622..ede690c40 100644 --- a/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch +++ b/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch @@ -1,7 +1,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Wed, 18 Feb 2015 16:05:28 +0100 Subject: sunrpc: Make svc_xprt_do_enqueue() use get_cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915 |in_atomic(): 1, irqs_disabled(): 0, pid: 3194, name: rpc.nfsd diff --git a/debian/patches-rt/sysfs-realtime-entry.patch b/debian/patches-rt/sysfs-realtime-entry.patch index 304e8bcf5..629d88e3a 100644 --- a/debian/patches-rt/sysfs-realtime-entry.patch +++ b/debian/patches-rt/sysfs-realtime-entry.patch @@ -1,7 +1,7 @@ Subject: sysfs: Add /sys/kernel/realtime entry From: Clark Williams <williams@redhat.com> Date: Sat Jul 30 21:55:53 2011 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Add a /sys/kernel entry to indicate that the kernel is a realtime kernel. diff --git a/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch b/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch index 1884e8aed..29a6331b6 100644 --- a/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch +++ b/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch @@ -1,7 +1,7 @@ Subject: tasklet: Prevent tasklets from going into infinite spin in RT From: Ingo Molnar <mingo@elte.hu> Date: Tue Nov 29 20:18:22 2011 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When CONFIG_PREEMPT_RT_FULL is enabled, tasklets run as threads, and spinlocks turn are mutexes. But this can cause issues with diff --git a/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch b/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch index 8eead709a..92602b6c7 100644 --- a/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch +++ b/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch @@ -1,7 +1,7 @@ From: Daniel Wagner <wagi@monom.org> Date: Tue, 17 Feb 2015 09:37:44 +0100 Subject: thermal: Defer thermal wakups to threads -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz On RT the spin lock in pkg_temp_thermal_platfrom_thermal_notify will call schedule while we run in irq context. diff --git a/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch b/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch index a12be7796..7194ecec3 100644 --- a/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch +++ b/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 15 Nov 2017 17:29:51 +0100 Subject: [PATCH] time/hrtimer: avoid schedule_work() with interrupts disabled -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz The NOHZ code tries to schedule a workqueue with interrupts disabled. Since this does not work -RT I am switching it to swork instead. diff --git a/debian/patches-rt/timekeeping-split-jiffies-lock.patch b/debian/patches-rt/timekeeping-split-jiffies-lock.patch index 6b1d995f9..d88169e0e 100644 --- a/debian/patches-rt/timekeeping-split-jiffies-lock.patch +++ b/debian/patches-rt/timekeeping-split-jiffies-lock.patch @@ -1,7 +1,7 @@ Subject: timekeeping: Split jiffies seqlock From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 14 Feb 2013 22:36:59 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Replace jiffies_lock seqlock with a simple seqcounter and a rawlock so it can be taken in atomic context on RT. diff --git a/debian/patches-rt/timers-prepare-for-full-preemption.patch b/debian/patches-rt/timers-prepare-for-full-preemption.patch index 7d96bc16e..7a1bf2781 100644 --- a/debian/patches-rt/timers-prepare-for-full-preemption.patch +++ b/debian/patches-rt/timers-prepare-for-full-preemption.patch @@ -1,7 +1,7 @@ From: Ingo Molnar <mingo@elte.hu> Date: Fri, 3 Jul 2009 08:29:34 -0500 Subject: timers: Prepare for full preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When softirqs can be preempted we need to make sure that cancelling the timer from the active thread can not deadlock vs. a running timer @@ -29,7 +29,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> # define del_timer_sync(t) del_timer(t) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -497,11 +497,14 @@ void resched_cpu(int cpu) +@@ -496,11 +496,14 @@ void resched_cpu(int cpu) */ int get_nohz_timer_target(void) { @@ -46,7 +46,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> rcu_read_lock(); for_each_domain(cpu, sd) { -@@ -520,6 +523,8 @@ int get_nohz_timer_target(void) +@@ -519,6 +522,8 @@ int get_nohz_timer_target(void) cpu = housekeeping_any_cpu(HK_FLAG_TIMER); unlock: rcu_read_unlock(); diff --git a/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch b/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch index 2c5f58735..b3227b5fb 100644 --- a/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch +++ b/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch @@ -1,7 +1,7 @@ From: Haris Okanovic <haris.okanovic@ni.com> Date: Tue, 15 Aug 2017 15:13:08 -0500 Subject: [PATCH] tpm_tis: fix stall after iowrite*()s -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz ioread8() operations to TPM MMIO addresses can stall the cpu when immediately following a sequence of iowrite*()'s to the same region. diff --git a/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch b/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch index 921e0de3e..ba37187f5 100644 --- a/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch +++ b/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 11 Apr 2016 16:55:02 +0200 Subject: [PATCH] tty: serial: 8250: don't take the trylock during oops -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz An oops with irqs off (panic() from irqsafe hrtimer like the watchdog timer) will lead to a lockdep warning on each invocation and as such diff --git a/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch b/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch index f78fd3ee4..17feb8c3e 100644 --- a/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch +++ b/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch @@ -4,7 +4,7 @@ Subject: [PATCH] tty: serial: pl011: explicitly initialize the flags variable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Silence the following gcc warning: diff --git a/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch b/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch index 91a2894ca..8ae5e1e80 100644 --- a/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch +++ b/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch @@ -1,7 +1,7 @@ Subject: net: Remove preemption disabling in netif_rx() From: Priyanka Jain <Priyanka.Jain@freescale.com> Date: Thu, 17 May 2012 09:35:11 +0530 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz 1)enqueue_to_backlog() (called from netif_rx) should be bind to a particluar CPU. This can be achieved by diff --git a/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch b/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch index 3f5404e0c..e72a34440 100644 --- a/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch +++ b/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 8 Nov 2013 17:34:54 +0100 Subject: usb: do no disable interrupts in giveback -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Since commit 94dfd7ed ("USB: HCD: support giveback of URB in tasklet context") the USB code disables interrupts before invoking the complete diff --git a/debian/patches-rt/wait.h-include-atomic.h.patch b/debian/patches-rt/wait.h-include-atomic.h.patch index da7fbab9b..c94f183eb 100644 --- a/debian/patches-rt/wait.h-include-atomic.h.patch +++ b/debian/patches-rt/wait.h-include-atomic.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 28 Oct 2013 12:19:57 +0100 Subject: wait.h: include atomic.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz | CC init/main.o |In file included from include/linux/mmzone.h:9:0, diff --git a/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch b/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch index eb72a58fc..8431e856b 100644 --- a/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch +++ b/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch @@ -1,7 +1,7 @@ From: Julia Cartwright <julia@ni.com> Date: Fri, 28 Sep 2018 21:03:51 +0000 Subject: [PATCH] watchdog: prevent deferral of watchdogd wakeup on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When PREEMPT_RT_FULL is enabled, all hrtimer expiry functions are deferred for execution into the context of ktimersoftd unless otherwise diff --git a/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch b/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch index 796aad677..c8586ea97 100644 --- a/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch +++ b/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 01 Jul 2013 11:02:42 +0200 Subject: workqueue: Prevent workqueue versus ata-piix livelock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz An Intel i7 system regularly detected rcu_preempt stalls after the kernel was upgraded from 3.6-rt to 3.8-rt. When the stall happened, disk I/O was no diff --git a/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch b/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch index ee90c20c5..c2bacd67f 100644 --- a/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch +++ b/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch @@ -1,7 +1,7 @@ From: Daniel Wagner <daniel.wagner@bmw-carit.de> Date: Fri, 11 Jul 2014 15:26:11 +0200 Subject: work-simple: Simple work queue implemenation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Provides a framework for enqueuing callbacks from irq context PREEMPT_RT_FULL safe. The callbacks are executed in kthread context. diff --git a/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch b/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch index bc99b278d..8cb3ccf39 100644 --- a/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch +++ b/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 10 Sep 2018 18:00:31 +0200 Subject: [PATCH] work-simple: drop a shit statement in SWORK_EVENT_PENDING -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Dan Carpenter reported | smatch warnings: diff --git a/debian/patches-rt/workqueue-distangle-from-rq-lock.patch b/debian/patches-rt/workqueue-distangle-from-rq-lock.patch index c8a86dc8f..2d8cb0d18 100644 --- a/debian/patches-rt/workqueue-distangle-from-rq-lock.patch +++ b/debian/patches-rt/workqueue-distangle-from-rq-lock.patch @@ -22,7 +22,7 @@ Cc: Jens Axboe <axboe@kernel.dk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20110622174919.135236139@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz [bigeasy: preempt_disable() around wq_worker_sleeping() by Daniel Bristot de Oliveira] @@ -35,7 +35,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -1703,10 +1703,6 @@ static inline void ttwu_activate(struct +@@ -1702,10 +1702,6 @@ static inline void ttwu_activate(struct { activate_task(rq, p, en_flags); p->on_rq = TASK_ON_RQ_QUEUED; @@ -46,7 +46,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } /* -@@ -2143,56 +2139,6 @@ try_to_wake_up(struct task_struct *p, un +@@ -2142,56 +2138,6 @@ try_to_wake_up(struct task_struct *p, un } /** @@ -103,7 +103,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * wake_up_process - Wake up a specific process * @p: The process to be woken up. * -@@ -3519,21 +3465,6 @@ static void __sched notrace __schedule(b +@@ -3518,21 +3464,6 @@ static void __sched notrace __schedule(b atomic_inc(&rq->nr_iowait); delayacct_blkio_start(); } @@ -125,7 +125,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } switch_count = &prev->nvcsw; } -@@ -3593,6 +3524,20 @@ static inline void sched_submit_work(str +@@ -3592,6 +3523,20 @@ static inline void sched_submit_work(str { if (!tsk->state || tsk_is_pi_blocked(tsk)) return; @@ -146,7 +146,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* * If we are going to sleep and we have plugged IO queued, * make sure to submit it to avoid deadlocks. -@@ -3601,6 +3546,12 @@ static inline void sched_submit_work(str +@@ -3600,6 +3545,12 @@ static inline void sched_submit_work(str blk_schedule_flush_plug(tsk); } @@ -159,7 +159,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> asmlinkage __visible void __sched schedule(void) { struct task_struct *tsk = current; -@@ -3611,6 +3562,7 @@ asmlinkage __visible void __sched schedu +@@ -3610,6 +3561,7 @@ asmlinkage __visible void __sched schedu __schedule(false); sched_preempt_enable_no_resched(); } while (need_resched()); diff --git a/debian/patches-rt/workqueue-prevent-deadlock-stall.patch b/debian/patches-rt/workqueue-prevent-deadlock-stall.patch index 95249e3d0..91ef71bc5 100644 --- a/debian/patches-rt/workqueue-prevent-deadlock-stall.patch +++ b/debian/patches-rt/workqueue-prevent-deadlock-stall.patch @@ -1,7 +1,7 @@ Subject: workqueue: Prevent deadlock/stall on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 27 Jun 2014 16:24:52 +0200 (CEST) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Austin reported a XFS deadlock/stall on RT where scheduled work gets never exececuted and tasks are waiting for each other for ever. @@ -44,7 +44,7 @@ Cc: Steven Rostedt <rostedt@goodmis.org> --- a/kernel/sched/core.c +++ b/kernel/sched/core.c -@@ -3568,9 +3568,8 @@ void __noreturn do_task_dead(void) +@@ -3567,9 +3567,8 @@ void __noreturn do_task_dead(void) static inline void sched_submit_work(struct task_struct *tsk) { @@ -55,7 +55,7 @@ Cc: Steven Rostedt <rostedt@goodmis.org> /* * If a worker went to sleep, notify and ask workqueue whether * it wants to wake up a task to maintain concurrency. -@@ -3584,6 +3583,9 @@ static inline void sched_submit_work(str +@@ -3583,6 +3582,9 @@ static inline void sched_submit_work(str preempt_enable_no_resched(); } diff --git a/debian/patches-rt/workqueue-use-locallock.patch b/debian/patches-rt/workqueue-use-locallock.patch index e395acfc5..3042a6c5f 100644 --- a/debian/patches-rt/workqueue-use-locallock.patch +++ b/debian/patches-rt/workqueue-use-locallock.patch @@ -1,7 +1,7 @@ Subject: workqueue: Use local irq lock instead of irq disable regions From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 17 Jul 2011 21:42:26 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Use a local_irq_lock as a replacement for irq off regions. We keep the semantic of irq-off in regard to the pool->lock and remain preemptible. diff --git a/debian/patches-rt/workqueue-use-rcu.patch b/debian/patches-rt/workqueue-use-rcu.patch index 6285fdafa..3cec46312 100644 --- a/debian/patches-rt/workqueue-use-rcu.patch +++ b/debian/patches-rt/workqueue-use-rcu.patch @@ -1,7 +1,7 @@ Subject: workqueue: Use normal rcu From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 24 Jul 2013 15:26:54 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There is no need for sched_rcu. The undocumented reason why sched_rcu is used is to avoid a few explicit rcu_read_lock()/unlock() pairs by diff --git a/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch b/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch index c5f80f9bf..4a06de565 100644 --- a/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch +++ b/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch @@ -1,7 +1,7 @@ Subject: x86: crypto: Reduce preempt disabled regions From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 14 Nov 2011 18:19:27 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Restrict the preempt disabled regions to the actual floating point operations and enable preemption for the administrative actions. diff --git a/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch b/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch index 0371a8e34..786b69d15 100644 --- a/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch +++ b/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 24 Jul 2018 14:48:55 +0200 Subject: [PATCH] x86/efi: drop task_lock() from efi_switch_mm() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz efi_switch_mm() is a wrapper around switch_mm() which saves current's ->active_mm, sets the requests mm as ->active_mm and invokes diff --git a/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch b/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch index 5f4cee002..f76c82693 100644 --- a/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch +++ b/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 11 Dec 2018 15:10:33 +0100 Subject: [PATCH] x86/fpu: Disable preemption around local_bh_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz __fpu__restore_sig() restores the content of the FPU state in the CPUs and in order to avoid concurency it disbles BH. On !RT it also disables diff --git a/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch b/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch index a85b2c0e1..761a36e91 100644 --- a/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch +++ b/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 11 Mar 2013 17:09:55 +0100 Subject: x86/highmem: Add a "already used pte" check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz This is a copy from kmap_atomic_prot(). diff --git a/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch b/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch index 8668e80db..c76b232fe 100644 --- a/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch +++ b/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 17 Jul 2018 18:25:31 +0200 Subject: [PATCH] x86/ioapic: Don't let setaffinity unmask threaded EOI interrupt too early -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz There is an issue with threaded interrupts which are marked ONESHOT and using the fasteoi handler. diff --git a/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch b/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch index e24badf28..49a5e92fe 100644 --- a/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch +++ b/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch @@ -1,7 +1,7 @@ Subject: x86: kvm Require const tsc for RT From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 06 Nov 2011 12:26:18 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Non constant TSC is a nightmare on bare metal already, but with virtualization it becomes a complete disaster because the workarounds @@ -15,7 +15,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c -@@ -6690,6 +6690,13 @@ int kvm_arch_init(void *opaque) +@@ -6692,6 +6692,13 @@ int kvm_arch_init(void *opaque) goto out; } diff --git a/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch b/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch index 3f6606371..9bf922116 100644 --- a/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch +++ b/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 11 Dec 2018 21:53:43 +0100 Subject: [PATCH] x86/mm/pat: disable preemption __split_large_page() after spin_lock() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Commit "x86/mm/pat: Disable preemption around __flush_tlb_all()" added a warning if __flush_tlb_all() is invoked in preemptible context. On !RT diff --git a/debian/patches-rt/x86-preempt-lazy.patch b/debian/patches-rt/x86-preempt-lazy.patch index 80cc1821f..e70b738a0 100644 --- a/debian/patches-rt/x86-preempt-lazy.patch +++ b/debian/patches-rt/x86-preempt-lazy.patch @@ -1,7 +1,7 @@ Subject: x86: Support for lazy preemption From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 01 Nov 2012 11:03:47 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Implement the x86 pieces for lazy preempt. diff --git a/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch b/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch index dbdc0926c..aea1c2305 100644 --- a/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch +++ b/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch @@ -1,7 +1,7 @@ From: Yang Shi <yang.shi@linaro.org> Date: Thu, 10 Dec 2015 10:58:51 -0800 Subject: x86/signal: delay calling signals on 32bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz When running some ptrace single step tests on x86-32 machine, the below problem is triggered: diff --git a/debian/patches-rt/x86-stackprot-no-random-on-rt.patch b/debian/patches-rt/x86-stackprot-no-random-on-rt.patch index 9b326507b..45733cdef 100644 --- a/debian/patches-rt/x86-stackprot-no-random-on-rt.patch +++ b/debian/patches-rt/x86-stackprot-no-random-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 16 Dec 2010 14:25:18 +0100 Subject: x86: stackprotector: Avoid random pool on rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz CPU bringup calls into the random pool to initialize the stack canary. During boot that works nicely even on RT as the might sleep diff --git a/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch b/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch index b02941a69..ff829f9a4 100644 --- a/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch +++ b/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Sun, 26 Jul 2009 02:21:32 +0200 Subject: x86: Use generic rwsem_spinlocks on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.10-rt8.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz Simplifies the separation of anon_rw_semaphores and rw_semaphores for -rt. |