diff options
| author | Salvatore Bonaccorso <carnil@debian.org> | 2020-10-17 00:15:39 +0200 |
|---|---|---|
| committer | Salvatore Bonaccorso <carnil@debian.org> | 2020-10-17 00:21:35 +0200 |
| commit | 2e5d9ae7e149105eaee579d40d68277027245b8a (patch) | |
| tree | 6b1988d37f06d96c228974119c40e3c180b939ac /debian | |
| parent | 4acaa4cb986369965e9bcd22c3cd952418e0bab7 (diff) | |
| download | linux-debian-2e5d9ae7e149105eaee579d40d68277027245b8a.tar.gz | |
[rt] Update to 5.9-rt16
[rt] Refresh "stop_machine: Add function and caller debug info"
Diffstat (limited to 'debian')
235 files changed, 382 insertions, 261 deletions
diff --git a/debian/changelog b/debian/changelog index 760530f57..d4bb674cb 100644 --- a/debian/changelog +++ b/debian/changelog @@ -9,7 +9,7 @@ linux (5.9-1~exp1) UNRELEASED; urgency=medium * [armhf,arm64] Enable CONFIG_VIDEO_SUNXI_CEDRUS (Closes: #972123) [ Salvatore Bonaccorso ] - * [rt] Update to 5.9-rt15 + * [rt] Update to 5.9-rt16 -- Romain Perier <romain.perier@gmail.com> Tue, 06 Oct 2020 19:07:37 +0200 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 89d1bee06..fcbac5fb2 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Split the IRQ-off section while accessing the PCP list from zone->lock while freeing pages. diff --git a/debian/patches-rt/0001-locking-rtmutex-Remove-cruft.patch b/debian/patches-rt/0001-locking-rtmutex-Remove-cruft.patch index 341997036..293ce26f7 100644 --- a/debian/patches-rt/0001-locking-rtmutex-Remove-cruft.patch +++ b/debian/patches-rt/0001-locking-rtmutex-Remove-cruft.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 29 Sep 2020 15:21:17 +0200 Subject: [PATCH 01/23] locking/rtmutex: Remove cruft -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Most of this is around since the very beginning. I'm not sure if this was used while the rtmutex-deadlock-tester was around but today it seems diff --git a/debian/patches-rt/0001-printk-rb-add-printk-ring-buffer-documentation.patch b/debian/patches-rt/0001-printk-rb-add-printk-ring-buffer-documentation.patch index 99906ba0e..92095b3a7 100644 --- a/debian/patches-rt/0001-printk-rb-add-printk-ring-buffer-documentation.patch +++ b/debian/patches-rt/0001-printk-rb-add-printk-ring-buffer-documentation.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:39 +0100 Subject: [PATCH 01/25] printk-rb: add printk ring buffer documentation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The full documentation file for the printk ring buffer. diff --git a/debian/patches-rt/0001-stop_machine-Add-function-and-caller-debug-info.patch b/debian/patches-rt/0001-stop_machine-Add-function-and-caller-debug-info.patch index a94f9ad3d..b571db69f 100644 --- a/debian/patches-rt/0001-stop_machine-Add-function-and-caller-debug-info.patch +++ b/debian/patches-rt/0001-stop_machine-Add-function-and-caller-debug-info.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:18 +0200 Subject: [PATCH 01/17] stop_machine: Add function and caller debug info -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Crashes in stop-machine are hard to connect to the calling code, add a little something to help with that. @@ -16,7 +16,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h -@@ -24,6 +24,7 @@ +@@ -24,6 +24,7 @@ typedef int (*cpu_stop_fn_t)(void *arg); struct cpu_stop_work { struct list_head list; /* cpu_stopper->works */ cpu_stop_fn_t fn; @@ -24,7 +24,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> void *arg; struct cpu_stop_done *done; }; -@@ -36,6 +37,8 @@ +@@ -36,6 +37,8 @@ void stop_machine_park(int cpu); void stop_machine_unpark(int cpu); void stop_machine_yield(const struct cpumask *cpumask); @@ -33,7 +33,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> #else /* CONFIG_SMP */ #include <linux/workqueue.h> -@@ -80,6 +83,8 @@ +@@ -80,6 +83,8 @@ static inline bool stop_one_cpu_nowait(u return false; } @@ -44,7 +44,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* --- a/kernel/stop_machine.c +++ b/kernel/stop_machine.c -@@ -42,11 +42,23 @@ +@@ -42,11 +42,23 @@ struct cpu_stopper { struct list_head works; /* list of pending works */ struct cpu_stop_work stop_work; /* for stop_cpus */ @@ -68,7 +68,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* static data for stop_cpus */ static DEFINE_MUTEX(stop_cpus_mutex); static bool stop_cpus_in_progress; -@@ -123,7 +135,7 @@ +@@ -123,7 +135,7 @@ static bool cpu_stop_queue_work(unsigned int stop_one_cpu(unsigned int cpu, cpu_stop_fn_t fn, void *arg) { struct cpu_stop_done done; @@ -77,7 +77,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> cpu_stop_init_done(&done, 1); if (!cpu_stop_queue_work(cpu, &work)) -@@ -331,7 +343,8 @@ +@@ -331,7 +343,8 @@ int stop_two_cpus(unsigned int cpu1, uns work1 = work2 = (struct cpu_stop_work){ .fn = multi_cpu_stop, .arg = &msdata, @@ -87,7 +87,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> }; cpu_stop_init_done(&done, 2); -@@ -367,7 +380,7 @@ +@@ -367,7 +380,7 @@ int stop_two_cpus(unsigned int cpu1, uns bool stop_one_cpu_nowait(unsigned int cpu, cpu_stop_fn_t fn, void *arg, struct cpu_stop_work *work_buf) { @@ -96,7 +96,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> return cpu_stop_queue_work(cpu, work_buf); } -@@ -487,6 +500,8 @@ +@@ -487,6 +500,8 @@ static void cpu_stopper_thread(unsigned int ret; /* cpu stop callbacks must not sleep, make in_atomic() == T */ @@ -105,7 +105,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> preempt_count_inc(); ret = fn(arg); if (done) { -@@ -495,6 +510,8 @@ +@@ -495,6 +510,8 @@ static void cpu_stopper_thread(unsigned cpu_stop_signal_done(done); } preempt_count_dec(); diff --git a/debian/patches-rt/0001-time-sched_clock-Use-raw_read_seqcount_latch-during-.patch b/debian/patches-rt/0001-time-sched_clock-Use-raw_read_seqcount_latch-during-.patch index 0f9117c34..4fa202afe 100644 --- a/debian/patches-rt/0001-time-sched_clock-Use-raw_read_seqcount_latch-during-.patch +++ b/debian/patches-rt/0001-time-sched_clock-Use-raw_read_seqcount_latch-during-.patch @@ -2,7 +2,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:37 +0200 Subject: [PATCH 01/13] time/sched_clock: Use raw_read_seqcount_latch() during suspend -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz sched_clock uses seqcount_t latching to switch between two storage places protected by the sequence counter. This allows it to have 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 f3098e167..89aa0d342 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-locking-rtmutex-Remove-output-from-deadlock-detector.patch b/debian/patches-rt/0002-locking-rtmutex-Remove-output-from-deadlock-detector.patch index 48fa14da3..6784c14bb 100644 --- a/debian/patches-rt/0002-locking-rtmutex-Remove-output-from-deadlock-detector.patch +++ b/debian/patches-rt/0002-locking-rtmutex-Remove-output-from-deadlock-detector.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 29 Sep 2020 16:05:11 +0200 Subject: [PATCH 02/23] locking/rtmutex: Remove output from deadlock detector. -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz In commit f5694788ad8da ("rt_mutex: Add lockdep annotations") diff --git a/debian/patches-rt/0002-mm-swap-Do-not-abuse-the-seqcount_t-latching-API.patch b/debian/patches-rt/0002-mm-swap-Do-not-abuse-the-seqcount_t-latching-API.patch index 27e1c4bc5..fd1c07272 100644 --- a/debian/patches-rt/0002-mm-swap-Do-not-abuse-the-seqcount_t-latching-API.patch +++ b/debian/patches-rt/0002-mm-swap-Do-not-abuse-the-seqcount_t-latching-API.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:38 +0200 Subject: [PATCH 02/13] mm/swap: Do not abuse the seqcount_t latching API -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Commit eef1a429f234 ("mm/swap.c: piggyback lru_add_drain_all() calls") implemented an optimization mechanism to exit the to-be-started LRU diff --git a/debian/patches-rt/0002-printk-rb-add-prb-locking-functions.patch b/debian/patches-rt/0002-printk-rb-add-prb-locking-functions.patch index 8ebecebd8..d9c67f673 100644 --- a/debian/patches-rt/0002-printk-rb-add-prb-locking-functions.patch +++ b/debian/patches-rt/0002-printk-rb-add-prb-locking-functions.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:40 +0100 Subject: [PATCH 02/25] printk-rb: add prb locking functions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add processor-reentrant spin locking functions. These allow restricting the number of possible contexts to 2, which can simplify diff --git a/debian/patches-rt/0002-sched-Fix-balance_callback.patch b/debian/patches-rt/0002-sched-Fix-balance_callback.patch index e5b587375..e35806b2b 100644 --- a/debian/patches-rt/0002-sched-Fix-balance_callback.patch +++ b/debian/patches-rt/0002-sched-Fix-balance_callback.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:19 +0200 Subject: [PATCH 02/17] sched: Fix balance_callback() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The intent of balance_callback() has always been to delay executing balancing operations until the end of the current rq->lock section. diff --git a/debian/patches-rt/0003-locking-rtmutex-Move-rt_mutex_init-outside-of-CONFIG.patch b/debian/patches-rt/0003-locking-rtmutex-Move-rt_mutex_init-outside-of-CONFIG.patch index aa1d4a85b..69c4caccb 100644 --- a/debian/patches-rt/0003-locking-rtmutex-Move-rt_mutex_init-outside-of-CONFIG.patch +++ b/debian/patches-rt/0003-locking-rtmutex-Move-rt_mutex_init-outside-of-CONFIG.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 29 Sep 2020 16:32:49 +0200 Subject: [PATCH 03/23] locking/rtmutex: Move rt_mutex_init() outside of CONFIG_DEBUG_RT_MUTEXES -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz rt_mutex_init() only initializes lockdep if CONFIG_DEBUG_RT_MUTEXES is enabled. The static initializer (DEFINE_RT_MUTEX) does not have such a 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 1f2a9a6b2..2845f669e 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0003-printk-rb-define-ring-buffer-struct-and-initializer.patch b/debian/patches-rt/0003-printk-rb-define-ring-buffer-struct-and-initializer.patch index 9f83c112d..8c1925ed1 100644 --- a/debian/patches-rt/0003-printk-rb-define-ring-buffer-struct-and-initializer.patch +++ b/debian/patches-rt/0003-printk-rb-define-ring-buffer-struct-and-initializer.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:41 +0100 Subject: [PATCH 03/25] printk-rb: define ring buffer struct and initializer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz See Documentation/printk-ringbuffer.txt for details about the initializer arguments. diff --git a/debian/patches-rt/0003-sched-hotplug-Ensure-only-per-cpu-kthreads-run-durin.patch b/debian/patches-rt/0003-sched-hotplug-Ensure-only-per-cpu-kthreads-run-durin.patch index 8e94bab4d..179a94cd8 100644 --- a/debian/patches-rt/0003-sched-hotplug-Ensure-only-per-cpu-kthreads-run-durin.patch +++ b/debian/patches-rt/0003-sched-hotplug-Ensure-only-per-cpu-kthreads-run-durin.patch @@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:20 +0200 Subject: [PATCH 03/17] sched/hotplug: Ensure only per-cpu kthreads run during hotplug -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz In preparation for migrate_disable(), make sure only per-cpu kthreads are allowed to run on !active CPUs. diff --git a/debian/patches-rt/0003-seqlock-Introduce-seqcount_latch_t.patch b/debian/patches-rt/0003-seqlock-Introduce-seqcount_latch_t.patch index e9e2d2835..64bdb571b 100644 --- a/debian/patches-rt/0003-seqlock-Introduce-seqcount_latch_t.patch +++ b/debian/patches-rt/0003-seqlock-Introduce-seqcount_latch_t.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:39 +0200 Subject: [PATCH 03/13] seqlock: Introduce seqcount_latch_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Latch sequence counters are a multiversion concurrency control mechanism where the seqcount_t counter even/odd value is used to switch between diff --git a/debian/patches-rt/0004-locking-rtmutex-Remove-rt_mutex_timed_lock.patch b/debian/patches-rt/0004-locking-rtmutex-Remove-rt_mutex_timed_lock.patch index 1b5d54011..5a5c94102 100644 --- a/debian/patches-rt/0004-locking-rtmutex-Remove-rt_mutex_timed_lock.patch +++ b/debian/patches-rt/0004-locking-rtmutex-Remove-rt_mutex_timed_lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 7 Oct 2020 12:11:33 +0200 Subject: [PATCH 04/23] locking/rtmutex: Remove rt_mutex_timed_lock() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz rt_mutex_timed_lock() has no callers since commit c051b21f71d1f ("rtmutex: Confine deadlock logic to futex") 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 05c21302e..9257af0a1 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0004-printk-rb-add-writer-interface.patch b/debian/patches-rt/0004-printk-rb-add-writer-interface.patch index 0c9515a25..e84b884ed 100644 --- a/debian/patches-rt/0004-printk-rb-add-writer-interface.patch +++ b/debian/patches-rt/0004-printk-rb-add-writer-interface.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:42 +0100 Subject: [PATCH 04/25] printk-rb: add writer interface -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add the writer functions prb_reserve() and prb_commit(). These make use of processor-reentrant spin locks to limit the number of possible diff --git a/debian/patches-rt/0004-sched-core-Wait-for-tasks-being-pushed-away-on-hotpl.patch b/debian/patches-rt/0004-sched-core-Wait-for-tasks-being-pushed-away-on-hotpl.patch index 46e5610d6..326390b79 100644 --- a/debian/patches-rt/0004-sched-core-Wait-for-tasks-being-pushed-away-on-hotpl.patch +++ b/debian/patches-rt/0004-sched-core-Wait-for-tasks-being-pushed-away-on-hotpl.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 5 Oct 2020 16:57:21 +0200 Subject: [PATCH 04/17] sched/core: Wait for tasks being pushed away on hotplug -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz RT kernels need to ensure that all tasks which are not per CPU kthreads have left the outgoing CPU to guarantee that no tasks are force migrated diff --git a/debian/patches-rt/0004-time-sched_clock-Use-seqcount_latch_t.patch b/debian/patches-rt/0004-time-sched_clock-Use-seqcount_latch_t.patch index 26377bae1..531fa0a9c 100644 --- a/debian/patches-rt/0004-time-sched_clock-Use-seqcount_latch_t.patch +++ b/debian/patches-rt/0004-time-sched_clock-Use-seqcount_latch_t.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:40 +0200 Subject: [PATCH 04/13] time/sched_clock: Use seqcount_latch_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Latch sequence counters have unique read and write APIs, and thus seqcount_latch_t was recently introduced at seqlock.h. diff --git a/debian/patches-rt/0005-locking-rtmutex-Handle-the-various-new-futex-race-co.patch b/debian/patches-rt/0005-locking-rtmutex-Handle-the-various-new-futex-race-co.patch index d7a49dfb4..c6a18eb3d 100644 --- a/debian/patches-rt/0005-locking-rtmutex-Handle-the-various-new-futex-race-co.patch +++ b/debian/patches-rt/0005-locking-rtmutex-Handle-the-various-new-futex-race-co.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 10 Jun 2011 11:04:15 +0200 Subject: [PATCH 05/23] locking/rtmutex: Handle the various new futex race conditions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 diff --git a/debian/patches-rt/0005-printk-rb-add-basic-non-blocking-reading-interface.patch b/debian/patches-rt/0005-printk-rb-add-basic-non-blocking-reading-interface.patch index 16371948e..a929a64d5 100644 --- a/debian/patches-rt/0005-printk-rb-add-basic-non-blocking-reading-interface.patch +++ b/debian/patches-rt/0005-printk-rb-add-basic-non-blocking-reading-interface.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:43 +0100 Subject: [PATCH 05/25] printk-rb: add basic non-blocking reading interface -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add reader iterator static declaration/initializer, dynamic initializer, and functions to iterate and retrieve ring buffer data. diff --git a/debian/patches-rt/0005-timekeeping-Use-seqcount_latch_t.patch b/debian/patches-rt/0005-timekeeping-Use-seqcount_latch_t.patch index 3481a03cc..fc0cad066 100644 --- a/debian/patches-rt/0005-timekeeping-Use-seqcount_latch_t.patch +++ b/debian/patches-rt/0005-timekeeping-Use-seqcount_latch_t.patch @@ -4,7 +4,7 @@ Subject: [PATCH 05/13] timekeeping: Use seqcount_latch_t 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Latch sequence counters are a multiversion concurrency control mechanism where the seqcount_t counter even/odd value is used to switch between diff --git a/debian/patches-rt/0005-workqueue-Manually-break-affinity-on-hotplug.patch b/debian/patches-rt/0005-workqueue-Manually-break-affinity-on-hotplug.patch index 057a893aa..a78cf34fa 100644 --- a/debian/patches-rt/0005-workqueue-Manually-break-affinity-on-hotplug.patch +++ b/debian/patches-rt/0005-workqueue-Manually-break-affinity-on-hotplug.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:22 +0200 Subject: [PATCH 05/17] workqueue: Manually break affinity on hotplug -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Don't rely on the scheduler to force break affinity for us -- it will stop doing that for per-cpu-kthreads. diff --git a/debian/patches-rt/0006-futex-Fix-bug-on-when-a-requeued-RT-task-times-out.patch b/debian/patches-rt/0006-futex-Fix-bug-on-when-a-requeued-RT-task-times-out.patch index 6ab056c82..c104e4f1b 100644 --- a/debian/patches-rt/0006-futex-Fix-bug-on-when-a-requeued-RT-task-times-out.patch +++ b/debian/patches-rt/0006-futex-Fix-bug-on-when-a-requeued-RT-task-times-out.patch @@ -1,7 +1,7 @@ From: Steven Rostedt <rostedt@goodmis.org> Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: [PATCH 06/23] futex: Fix bug on when a requeued RT task times out -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Requeue with timeout causes a bug with PREEMPT_RT. diff --git a/debian/patches-rt/0006-printk-rb-add-blocking-reader-support.patch b/debian/patches-rt/0006-printk-rb-add-blocking-reader-support.patch index 072711b14..f3ab52e2a 100644 --- a/debian/patches-rt/0006-printk-rb-add-blocking-reader-support.patch +++ b/debian/patches-rt/0006-printk-rb-add-blocking-reader-support.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:44 +0100 Subject: [PATCH 06/25] printk-rb: add blocking reader support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add a blocking read function for readers. An irq_work function is used to signal the wait queue so that write notification can diff --git a/debian/patches-rt/0006-sched-hotplug-Consolidate-task-migration-on-CPU-unpl.patch b/debian/patches-rt/0006-sched-hotplug-Consolidate-task-migration-on-CPU-unpl.patch index 7dc81a907..68af43088 100644 --- a/debian/patches-rt/0006-sched-hotplug-Consolidate-task-migration-on-CPU-unpl.patch +++ b/debian/patches-rt/0006-sched-hotplug-Consolidate-task-migration-on-CPU-unpl.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 5 Oct 2020 16:57:23 +0200 Subject: [PATCH 06/17] sched/hotplug: Consolidate task migration on CPU unplug -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz With the new mechanism which kicks tasks off the outgoing CPU at the end of schedule() the situation on an outgoing CPU right before the stopper thread diff --git a/debian/patches-rt/0006-x86-tsc-Use-seqcount_latch_t.patch b/debian/patches-rt/0006-x86-tsc-Use-seqcount_latch_t.patch index a3289a38f..c8fcfab1f 100644 --- a/debian/patches-rt/0006-x86-tsc-Use-seqcount_latch_t.patch +++ b/debian/patches-rt/0006-x86-tsc-Use-seqcount_latch_t.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:42 +0200 Subject: [PATCH 06/13] x86/tsc: Use seqcount_latch_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Latch sequence counters have unique read and write APIs, and thus seqcount_latch_t was recently introduced at seqlock.h. diff --git a/debian/patches-rt/0007-locking-rtmutex-Add-rtmutex_lock_killable.patch b/debian/patches-rt/0007-locking-rtmutex-Add-rtmutex_lock_killable.patch index 696ac4e34..bcf780c6f 100644 --- a/debian/patches-rt/0007-locking-rtmutex-Add-rtmutex_lock_killable.patch +++ b/debian/patches-rt/0007-locking-rtmutex-Add-rtmutex_lock_killable.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 9 Jun 2011 11:43:52 +0200 Subject: [PATCH 07/23] locking/rtmutex: Add rtmutex_lock_killable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0007-printk-rb-add-functionality-required-by-printk.patch b/debian/patches-rt/0007-printk-rb-add-functionality-required-by-printk.patch index 8ed5cabd9..a67a64379 100644 --- a/debian/patches-rt/0007-printk-rb-add-functionality-required-by-printk.patch +++ b/debian/patches-rt/0007-printk-rb-add-functionality-required-by-printk.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:45 +0100 Subject: [PATCH 07/25] printk-rb: add functionality required by printk -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The printk subsystem needs to be able to query the size of the ring buffer, seek to specific entries within the ring buffer, and track diff --git a/debian/patches-rt/0007-rbtree_latch-Use-seqcount_latch_t.patch b/debian/patches-rt/0007-rbtree_latch-Use-seqcount_latch_t.patch index 407e28f3a..520e3b036 100644 --- a/debian/patches-rt/0007-rbtree_latch-Use-seqcount_latch_t.patch +++ b/debian/patches-rt/0007-rbtree_latch-Use-seqcount_latch_t.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:43 +0200 Subject: [PATCH 07/13] rbtree_latch: Use seqcount_latch_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Latch sequence counters have unique read and write APIs, and thus seqcount_latch_t was recently introduced at seqlock.h. diff --git a/debian/patches-rt/0007-sched-Fix-hotplug-vs-CPU-bandwidth-control.patch b/debian/patches-rt/0007-sched-Fix-hotplug-vs-CPU-bandwidth-control.patch index 5e7da6735..48aba040a 100644 --- a/debian/patches-rt/0007-sched-Fix-hotplug-vs-CPU-bandwidth-control.patch +++ b/debian/patches-rt/0007-sched-Fix-hotplug-vs-CPU-bandwidth-control.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:24 +0200 Subject: [PATCH 07/17] sched: Fix hotplug vs CPU bandwidth control -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Since we now migrate tasks away before DYING, we should also move bandwidth unthrottle, otherwise we can gain tasks from unthrottle diff --git a/debian/patches-rt/0008-locking-rtmutex-Make-lock_killable-work.patch b/debian/patches-rt/0008-locking-rtmutex-Make-lock_killable-work.patch index fbb0c9328..7d6363701 100644 --- a/debian/patches-rt/0008-locking-rtmutex-Make-lock_killable-work.patch +++ b/debian/patches-rt/0008-locking-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 08/23] locking/rtmutex: Make lock_killable work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Locking an rt mutex killable does not work because signal handling is restricted to TASK_INTERRUPTIBLE. diff --git a/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch b/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch index 2416b61a1..4dcc8a910 100644 --- a/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch +++ b/debian/patches-rt/0008-printk-add-ring-buffer-and-kthread.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:46 +0100 Subject: [PATCH 08/25] printk: add ring buffer and kthread -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The printk ring buffer provides an NMI-safe interface for writing messages to a ring buffer. Using such a buffer for alleviates printk diff --git a/debian/patches-rt/0008-sched-Massage-set_cpus_allowed.patch b/debian/patches-rt/0008-sched-Massage-set_cpus_allowed.patch index 94498e3b0..6b25853a7 100644 --- a/debian/patches-rt/0008-sched-Massage-set_cpus_allowed.patch +++ b/debian/patches-rt/0008-sched-Massage-set_cpus_allowed.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:25 +0200 Subject: [PATCH 08/17] sched: Massage set_cpus_allowed() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Thread a u32 flags word through the *set_cpus_allowed*() callchain. This will allow adding behavioural tweaks for future users. diff --git a/debian/patches-rt/0008-seqlock-seqcount-latch-APIs-Only-allow-seqcount_latc.patch b/debian/patches-rt/0008-seqlock-seqcount-latch-APIs-Only-allow-seqcount_latc.patch index ad19f025a..2503d9070 100644 --- a/debian/patches-rt/0008-seqlock-seqcount-latch-APIs-Only-allow-seqcount_latc.patch +++ b/debian/patches-rt/0008-seqlock-seqcount-latch-APIs-Only-allow-seqcount_latc.patch @@ -2,7 +2,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Thu, 27 Aug 2020 13:40:44 +0200 Subject: [PATCH 08/13] seqlock: seqcount latch APIs: Only allow seqcount_latch_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz All latch sequence counter call-sites have now been converted from plain seqcount_t to the new seqcount_latch_t data type. diff --git a/debian/patches-rt/0009-locking-spinlock-Split-the-lock-types-header.patch b/debian/patches-rt/0009-locking-spinlock-Split-the-lock-types-header.patch index bb9e8bf76..729ff4dbb 100644 --- a/debian/patches-rt/0009-locking-spinlock-Split-the-lock-types-header.patch +++ b/debian/patches-rt/0009-locking-spinlock-Split-the-lock-types-header.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 29 Jun 2011 19:34:01 +0200 Subject: [PATCH 09/23] locking/spinlock: Split the lock types header -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0009-printk-remove-exclusive-console-hack.patch b/debian/patches-rt/0009-printk-remove-exclusive-console-hack.patch index 560be7165..de7b30488 100644 --- a/debian/patches-rt/0009-printk-remove-exclusive-console-hack.patch +++ b/debian/patches-rt/0009-printk-remove-exclusive-console-hack.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:47 +0100 Subject: [PATCH 09/25] printk: remove exclusive console hack -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz In order to support printing the printk log history when new consoles are registered, a global exclusive_console variable is diff --git a/debian/patches-rt/0009-sched-Add-migrate_disable.patch b/debian/patches-rt/0009-sched-Add-migrate_disable.patch index b5c0ba34a..72018258a 100644 --- a/debian/patches-rt/0009-sched-Add-migrate_disable.patch +++ b/debian/patches-rt/0009-sched-Add-migrate_disable.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:26 +0200 Subject: [PATCH 09/17] sched: Add migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add the base migrate_disable() support (under protest). diff --git a/debian/patches-rt/0009-seqlock-seqcount_LOCKNAME_t-Standardize-naming-conve.patch b/debian/patches-rt/0009-seqlock-seqcount_LOCKNAME_t-Standardize-naming-conve.patch index 10122f3df..8d6f009ef 100644 --- a/debian/patches-rt/0009-seqlock-seqcount_LOCKNAME_t-Standardize-naming-conve.patch +++ b/debian/patches-rt/0009-seqlock-seqcount_LOCKNAME_t-Standardize-naming-conve.patch @@ -2,7 +2,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Fri, 4 Sep 2020 17:32:27 +0200 Subject: [PATCH 09/13] seqlock: seqcount_LOCKNAME_t: Standardize naming convention -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz At seqlock.h, sequence counters with associated locks are either called seqcount_LOCKNAME_t, seqcount_LOCKTYPE_t, or seqcount_locktype_t. diff --git a/debian/patches-rt/0010-locking-rtmutex-Avoid-include-hell.patch b/debian/patches-rt/0010-locking-rtmutex-Avoid-include-hell.patch index d3c023f3d..8fbe38b32 100644 --- a/debian/patches-rt/0010-locking-rtmutex-Avoid-include-hell.patch +++ b/debian/patches-rt/0010-locking-rtmutex-Avoid-include-hell.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 29 Jun 2011 20:06:39 +0200 Subject: [PATCH 10/23] locking/rtmutex: Avoid include hell -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0010-printk-redirect-emit-store-to-new-ringbuffer.patch b/debian/patches-rt/0010-printk-redirect-emit-store-to-new-ringbuffer.patch index e04bdd5a6..65e987bf6 100644 --- a/debian/patches-rt/0010-printk-redirect-emit-store-to-new-ringbuffer.patch +++ b/debian/patches-rt/0010-printk-redirect-emit-store-to-new-ringbuffer.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:48 +0100 Subject: [PATCH 10/25] printk: redirect emit/store to new ringbuffer -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz vprintk_emit and vprintk_store are the main functions that all printk variants eventually go through. Change these to store the message in diff --git a/debian/patches-rt/0010-sched-Fix-migrate_disable-vs-set_cpus_allowed_ptr.patch b/debian/patches-rt/0010-sched-Fix-migrate_disable-vs-set_cpus_allowed_ptr.patch index c0d697fef..c7a21884b 100644 --- a/debian/patches-rt/0010-sched-Fix-migrate_disable-vs-set_cpus_allowed_ptr.patch +++ b/debian/patches-rt/0010-sched-Fix-migrate_disable-vs-set_cpus_allowed_ptr.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:27 +0200 Subject: [PATCH 10/17] sched: Fix migrate_disable() vs set_cpus_allowed_ptr() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Concurrent migrate_disable() and set_cpus_allowed_ptr() has interesting features. We rely on set_cpus_allowed_ptr() to not return diff --git a/debian/patches-rt/0010-seqlock-Use-unique-prefix-for-seqcount_t-property-ac.patch b/debian/patches-rt/0010-seqlock-Use-unique-prefix-for-seqcount_t-property-ac.patch index 0f6775b2e..fd626ff48 100644 --- a/debian/patches-rt/0010-seqlock-Use-unique-prefix-for-seqcount_t-property-ac.patch +++ b/debian/patches-rt/0010-seqlock-Use-unique-prefix-for-seqcount_t-property-ac.patch @@ -2,7 +2,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Fri, 4 Sep 2020 17:32:28 +0200 Subject: [PATCH 10/13] seqlock: Use unique prefix for seqcount_t property accessors -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz At seqlock.h, the following set of functions: diff --git a/debian/patches-rt/0011-lockdep-Reduce-header-files-in-debug_locks.h.patch b/debian/patches-rt/0011-lockdep-Reduce-header-files-in-debug_locks.h.patch index ccba43b58..0114a5b49 100644 --- a/debian/patches-rt/0011-lockdep-Reduce-header-files-in-debug_locks.h.patch +++ b/debian/patches-rt/0011-lockdep-Reduce-header-files-in-debug_locks.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 14 Aug 2020 16:55:25 +0200 Subject: [PATCH 11/23] lockdep: Reduce header files in debug_locks.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The inclusion of kernel.h leads to circular dependency if spinlock_t is based on rt_mutex. diff --git a/debian/patches-rt/0011-printk_safe-remove-printk-safe-code.patch b/debian/patches-rt/0011-printk_safe-remove-printk-safe-code.patch index 32e3339a7..fad755708 100644 --- a/debian/patches-rt/0011-printk_safe-remove-printk-safe-code.patch +++ b/debian/patches-rt/0011-printk_safe-remove-printk-safe-code.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:49 +0100 Subject: [PATCH 11/25] printk_safe: remove printk safe code -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz vprintk variants are now NMI-safe so there is no longer a need for the "safe" calls. diff --git a/debian/patches-rt/0011-sched-core-Make-migrate-disable-and-CPU-hotplug-coop.patch b/debian/patches-rt/0011-sched-core-Make-migrate-disable-and-CPU-hotplug-coop.patch index 92b89f999..c8cfe6995 100644 --- a/debian/patches-rt/0011-sched-core-Make-migrate-disable-and-CPU-hotplug-coop.patch +++ b/debian/patches-rt/0011-sched-core-Make-migrate-disable-and-CPU-hotplug-coop.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 5 Oct 2020 16:57:28 +0200 Subject: [PATCH 11/17] sched/core: Make migrate disable and CPU hotplug cooperative -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz On CPU unplug tasks which are in a migrate disabled region cannot be pushed to a different CPU until they returned to migrateable state. diff --git a/debian/patches-rt/0011-seqlock-seqcount_t-Implement-all-read-APIs-as-statem.patch b/debian/patches-rt/0011-seqlock-seqcount_t-Implement-all-read-APIs-as-statem.patch index a90a3f2a8..a77f465d1 100644 --- a/debian/patches-rt/0011-seqlock-seqcount_t-Implement-all-read-APIs-as-statem.patch +++ b/debian/patches-rt/0011-seqlock-seqcount_t-Implement-all-read-APIs-as-statem.patch @@ -2,7 +2,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Fri, 4 Sep 2020 17:32:29 +0200 Subject: [PATCH 11/13] seqlock: seqcount_t: Implement all read APIs as statement expressions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The sequence counters read APIs are implemented as CPP macros, so they can take either seqcount_t or any of the seqcount_LOCKNAME_t variants. diff --git a/debian/patches-rt/0012-locking-split-out-the-rbtree-definition.patch b/debian/patches-rt/0012-locking-split-out-the-rbtree-definition.patch index 9c20df9fd..2d33f0b56 100644 --- a/debian/patches-rt/0012-locking-split-out-the-rbtree-definition.patch +++ b/debian/patches-rt/0012-locking-split-out-the-rbtree-definition.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 14 Aug 2020 17:08:41 +0200 Subject: [PATCH 12/23] locking: split out the rbtree definition -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz rtmutex.h needs the definition for rb_root_cached. By including kernel.h we will get to spinlock.h which requires rtmutex.h again. diff --git a/debian/patches-rt/0012-printk-minimize-console-locking-implementation.patch b/debian/patches-rt/0012-printk-minimize-console-locking-implementation.patch index a826b87e8..4050ef0c3 100644 --- a/debian/patches-rt/0012-printk-minimize-console-locking-implementation.patch +++ b/debian/patches-rt/0012-printk-minimize-console-locking-implementation.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:50 +0100 Subject: [PATCH 12/25] printk: minimize console locking implementation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Since printing of the printk buffer is now handled by the printk kthread, minimize the console locking functions to just handle diff --git a/debian/patches-rt/0012-sched-rt-Use-cpumask_any-_distribute.patch b/debian/patches-rt/0012-sched-rt-Use-cpumask_any-_distribute.patch index 933047b75..9a84c18c6 100644 --- a/debian/patches-rt/0012-sched-rt-Use-cpumask_any-_distribute.patch +++ b/debian/patches-rt/0012-sched-rt-Use-cpumask_any-_distribute.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:29 +0200 Subject: [PATCH 12/17] sched,rt: Use cpumask_any*_distribute() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Replace a bunch of cpumask_any*() instances with cpumask_any*_distribute(), by injecting this little bit of random in diff --git a/debian/patches-rt/0012-seqlock-seqcount_LOCKNAME_t-Introduce-PREEMPT_RT-sup.patch b/debian/patches-rt/0012-seqlock-seqcount_LOCKNAME_t-Introduce-PREEMPT_RT-sup.patch index 0afbd35c7..0e3b5929e 100644 --- a/debian/patches-rt/0012-seqlock-seqcount_LOCKNAME_t-Introduce-PREEMPT_RT-sup.patch +++ b/debian/patches-rt/0012-seqlock-seqcount_LOCKNAME_t-Introduce-PREEMPT_RT-sup.patch @@ -2,7 +2,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Fri, 4 Sep 2020 17:32:30 +0200 Subject: [PATCH 12/13] seqlock: seqcount_LOCKNAME_t: Introduce PREEMPT_RT support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Preemption must be disabled before entering a sequence counter write side critical section. Otherwise the read side section can preempt the diff --git a/debian/patches-rt/0013-locking-rtmutex-Provide-rt_mutex_slowlock_locked.patch b/debian/patches-rt/0013-locking-rtmutex-Provide-rt_mutex_slowlock_locked.patch index 9aac7e039..2b17868e7 100644 --- a/debian/patches-rt/0013-locking-rtmutex-Provide-rt_mutex_slowlock_locked.patch +++ b/debian/patches-rt/0013-locking-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: [PATCH 13/23] locking/rtmutex: Provide rt_mutex_slowlock_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz This is the inner-part of rt_mutex_slowlock(), required for rwsem-rt. diff --git a/debian/patches-rt/0013-printk-track-seq-per-console.patch b/debian/patches-rt/0013-printk-track-seq-per-console.patch index 52b5893bf..c3f3bb19b 100644 --- a/debian/patches-rt/0013-printk-track-seq-per-console.patch +++ b/debian/patches-rt/0013-printk-track-seq-per-console.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:51 +0100 Subject: [PATCH 13/25] printk: track seq per console -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Allow each console to track which seq record was last printed. This simplifies identifying dropped records. diff --git a/debian/patches-rt/0013-sched-rt-Use-the-full-cpumask-for-balancing.patch b/debian/patches-rt/0013-sched-rt-Use-the-full-cpumask-for-balancing.patch index c5554d0be..4bd131666 100644 --- a/debian/patches-rt/0013-sched-rt-Use-the-full-cpumask-for-balancing.patch +++ b/debian/patches-rt/0013-sched-rt-Use-the-full-cpumask-for-balancing.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:30 +0200 Subject: [PATCH 13/17] sched,rt: Use the full cpumask for balancing -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz We want migrate_disable() tasks to get PULLs in order for them to PUSH away the higher priority task. diff --git a/debian/patches-rt/0013-seqlock-PREEMPT_RT-Do-not-starve-seqlock_t-writers.patch b/debian/patches-rt/0013-seqlock-PREEMPT_RT-Do-not-starve-seqlock_t-writers.patch index 55e1d73f1..64a0d8320 100644 --- a/debian/patches-rt/0013-seqlock-PREEMPT_RT-Do-not-starve-seqlock_t-writers.patch +++ b/debian/patches-rt/0013-seqlock-PREEMPT_RT-Do-not-starve-seqlock_t-writers.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Fri, 4 Sep 2020 17:32:31 +0200 Subject: [PATCH 13/13] seqlock: PREEMPT_RT: Do not starve seqlock_t writers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz On PREEMPT_RT, seqlock_t is transformed to a sleeping lock that do not disable preemption. A seqlock_t reader can thus preempt its write side diff --git a/debian/patches-rt/0014-locking-rtmutex-export-lockdep-less-version-of-rt_mu.patch b/debian/patches-rt/0014-locking-rtmutex-export-lockdep-less-version-of-rt_mu.patch index b86754d59..6483750fa 100644 --- a/debian/patches-rt/0014-locking-rtmutex-export-lockdep-less-version-of-rt_mu.patch +++ b/debian/patches-rt/0014-locking-rtmutex-export-lockdep-less-version-of-rt_mu.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 16:36:39 +0200 Subject: [PATCH 14/23] locking/rtmutex: export lockdep-less version of rt_mutex's lock, trylock and unlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Required for lock implementation ontop of rtmutex. diff --git a/debian/patches-rt/0014-printk-do-boot_delay_msec-inside-printk_delay.patch b/debian/patches-rt/0014-printk-do-boot_delay_msec-inside-printk_delay.patch index e2ca8fab1..60b82ac22 100644 --- a/debian/patches-rt/0014-printk-do-boot_delay_msec-inside-printk_delay.patch +++ b/debian/patches-rt/0014-printk-do-boot_delay_msec-inside-printk_delay.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:52 +0100 Subject: [PATCH 14/25] printk: do boot_delay_msec inside printk_delay -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Both functions needed to be called one after the other, so just integrate boot_delay_msec into printk_delay for simplification. diff --git a/debian/patches-rt/0014-sched-lockdep-Annotate-pi_lock-recursion.patch b/debian/patches-rt/0014-sched-lockdep-Annotate-pi_lock-recursion.patch index 8292282e1..9fa2b217c 100644 --- a/debian/patches-rt/0014-sched-lockdep-Annotate-pi_lock-recursion.patch +++ b/debian/patches-rt/0014-sched-lockdep-Annotate-pi_lock-recursion.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:31 +0200 Subject: [PATCH 14/17] sched, lockdep: Annotate ->pi_lock recursion -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz There's a valid ->pi_lock recursion issue where the actual PI code tries to wake up the stop task. Make lockdep aware so it doesn't diff --git a/debian/patches-rt/0015-printk-print-history-for-new-consoles.patch b/debian/patches-rt/0015-printk-print-history-for-new-consoles.patch index 526e338ad..f6eefd8d2 100644 --- a/debian/patches-rt/0015-printk-print-history-for-new-consoles.patch +++ b/debian/patches-rt/0015-printk-print-history-for-new-consoles.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:53 +0100 Subject: [PATCH 15/25] printk: print history for new consoles -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz When new consoles register, they currently print how many messages they have missed. However, many (or all) of those messages may still diff --git a/debian/patches-rt/0015-sched-Add-saved_state-for-tasks-blocked-on-sleeping-.patch b/debian/patches-rt/0015-sched-Add-saved_state-for-tasks-blocked-on-sleeping-.patch index 9378144cc..9adb27b21 100644 --- a/debian/patches-rt/0015-sched-Add-saved_state-for-tasks-blocked-on-sleeping-.patch +++ b/debian/patches-rt/0015-sched-Add-saved_state-for-tasks-blocked-on-sleeping-.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Sat, 25 Jun 2011 09:21:04 +0200 Subject: [PATCH 15/23] sched: Add saved_state for tasks blocked on sleeping locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 diff --git a/debian/patches-rt/0015-sched-Fix-migrate_disable-vs-rt-dl-balancing.patch b/debian/patches-rt/0015-sched-Fix-migrate_disable-vs-rt-dl-balancing.patch index f921b8fda..49e0a90d3 100644 --- a/debian/patches-rt/0015-sched-Fix-migrate_disable-vs-rt-dl-balancing.patch +++ b/debian/patches-rt/0015-sched-Fix-migrate_disable-vs-rt-dl-balancing.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:32 +0200 Subject: [PATCH 15/17] sched: Fix migrate_disable() vs rt/dl balancing -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz In order to minimize the interference of migrate_disable() on lower priority tasks, which can be deprived of runtime due to being stuck diff --git a/debian/patches-rt/0016-locking-rtmutex-add-sleeping-lock-implementation.patch b/debian/patches-rt/0016-locking-rtmutex-add-sleeping-lock-implementation.patch index 24c80cd06..2880c2568 100644 --- a/debian/patches-rt/0016-locking-rtmutex-add-sleeping-lock-implementation.patch +++ b/debian/patches-rt/0016-locking-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: [PATCH 16/23] locking/rtmutex: add sleeping lock implementation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> @@ -226,10 +226,10 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> + rt_spin_lock_nested(lock, subclass); \ + } while (0) + -+# define spin_lock_nest_lock(lock, nest_lock) \ ++# define spin_lock_nest_lock(lock, subclass) \ + do { \ -+ typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \ -+ rt_spin_lock_nest_lock(lock, &(nest_lock)->dep_map); \ ++ typecheck(struct lockdep_map *, &(subclass)->dep_map); \ ++ rt_spin_lock_nest_lock(lock, &(subclass)->dep_map); \ + } while (0) + +# define spin_lock_irqsave_nested(lock, flags, subclass) \ @@ -239,15 +239,15 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> + rt_spin_lock_nested(lock, subclass); \ + } while (0) +#else -+# define spin_lock_nested(lock, subclass) spin_lock(lock) -+# define spin_lock_nest_lock(lock, nest_lock) spin_lock(lock) -+# define spin_lock_bh_nested(lock, subclass) spin_lock_bh(lock) ++# define spin_lock_nested(lock, subclass) spin_lock(((void)(subclass), (lock))) ++# define spin_lock_nest_lock(lock, subclass) spin_lock(((void)(subclass), (lock))) ++# define spin_lock_bh_nested(lock, subclass) spin_lock_bh(((void)(subclass), (lock))) + +# define spin_lock_irqsave_nested(lock, flags, subclass) \ + do { \ + typecheck(unsigned long, flags); \ + flags = 0; \ -+ spin_lock(lock); \ ++ spin_lock(((void)(subclass), (lock))); \ + } while (0) +#endif + diff --git a/debian/patches-rt/0016-printk-implement-CON_PRINTBUFFER.patch b/debian/patches-rt/0016-printk-implement-CON_PRINTBUFFER.patch index d66eaba00..b19900289 100644 --- a/debian/patches-rt/0016-printk-implement-CON_PRINTBUFFER.patch +++ b/debian/patches-rt/0016-printk-implement-CON_PRINTBUFFER.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:54 +0100 Subject: [PATCH 16/25] printk: implement CON_PRINTBUFFER -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz If the CON_PRINTBUFFER flag is not set, do not replay the history for that console. diff --git a/debian/patches-rt/0016-sched-proc-Print-accurate-cpumask-vs-migrate_disable.patch b/debian/patches-rt/0016-sched-proc-Print-accurate-cpumask-vs-migrate_disable.patch index 3138b6c02..28d081dbb 100644 --- a/debian/patches-rt/0016-sched-proc-Print-accurate-cpumask-vs-migrate_disable.patch +++ b/debian/patches-rt/0016-sched-proc-Print-accurate-cpumask-vs-migrate_disable.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:33 +0200 Subject: [PATCH 16/17] sched/proc: Print accurate cpumask vs migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Ensure /proc/*/status doesn't print 'random' cpumasks due to migrate_disable(). diff --git a/debian/patches-rt/0017-locking-rtmutex-Allow-rt_mutex_trylock-on-PREEMPT_RT.patch b/debian/patches-rt/0017-locking-rtmutex-Allow-rt_mutex_trylock-on-PREEMPT_RT.patch index f8c8cf1f6..b3e5443df 100644 --- a/debian/patches-rt/0017-locking-rtmutex-Allow-rt_mutex_trylock-on-PREEMPT_RT.patch +++ b/debian/patches-rt/0017-locking-rtmutex-Allow-rt_mutex_trylock-on-PREEMPT_RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 2 Dec 2015 11:34:07 +0100 Subject: [PATCH 17/23] locking/rtmutex: Allow rt_mutex_trylock() on PREEMPT_RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Non PREEMPT_RT kernel can deadlock on rt_mutex_trylock() in softirq context. diff --git a/debian/patches-rt/0017-printk-add-processor-number-to-output.patch b/debian/patches-rt/0017-printk-add-processor-number-to-output.patch index 3f9b1ce14..8ee3b0d95 100644 --- a/debian/patches-rt/0017-printk-add-processor-number-to-output.patch +++ b/debian/patches-rt/0017-printk-add-processor-number-to-output.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:55 +0100 Subject: [PATCH 17/25] printk: add processor number to output -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz It can be difficult to sort printk out if multiple processors are printing simultaneously. Add the processor number to the printk diff --git a/debian/patches-rt/0017-sched-Add-migrate_disable-tracepoints.patch b/debian/patches-rt/0017-sched-Add-migrate_disable-tracepoints.patch index 2b63507c9..5ab884f47 100644 --- a/debian/patches-rt/0017-sched-Add-migrate_disable-tracepoints.patch +++ b/debian/patches-rt/0017-sched-Add-migrate_disable-tracepoints.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra <peterz@infradead.org> Date: Mon, 5 Oct 2020 16:57:34 +0200 Subject: [PATCH 17/17] sched: Add migrate_disable() tracepoints -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz XXX write a tracer: diff --git a/debian/patches-rt/0018-console-add-write_atomic-interface.patch b/debian/patches-rt/0018-console-add-write_atomic-interface.patch index 0fb9ced8c..b4613c5e6 100644 --- a/debian/patches-rt/0018-console-add-write_atomic-interface.patch +++ b/debian/patches-rt/0018-console-add-write_atomic-interface.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:56 +0100 Subject: [PATCH 18/25] console: add write_atomic interface -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add a write_atomic callback to the console. This is an optional function for console drivers. The function must be atomic (including diff --git a/debian/patches-rt/0018-locking-rtmutex-add-mutex-implementation-based-on-rt.patch b/debian/patches-rt/0018-locking-rtmutex-add-mutex-implementation-based-on-rt.patch index f4e2e7ffb..1754f7527 100644 --- a/debian/patches-rt/0018-locking-rtmutex-add-mutex-implementation-based-on-rt.patch +++ b/debian/patches-rt/0018-locking-rtmutex-add-mutex-implementation-based-on-rt.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:17:03 +0200 Subject: [PATCH 18/23] locking/rtmutex: add mutex implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0019-locking-rtmutex-add-rwsem-implementation-based-on-rt.patch b/debian/patches-rt/0019-locking-rtmutex-add-rwsem-implementation-based-on-rt.patch index 85db7f7e2..84a614a39 100644 --- a/debian/patches-rt/0019-locking-rtmutex-add-rwsem-implementation-based-on-rt.patch +++ b/debian/patches-rt/0019-locking-rtmutex-add-rwsem-implementation-based-on-rt.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:28:34 +0200 Subject: [PATCH 19/23] locking/rtmutex: add rwsem implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0019-printk-introduce-emergency-messages.patch b/debian/patches-rt/0019-printk-introduce-emergency-messages.patch index 6173106e7..040c65c6d 100644 --- a/debian/patches-rt/0019-printk-introduce-emergency-messages.patch +++ b/debian/patches-rt/0019-printk-introduce-emergency-messages.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:57 +0100 Subject: [PATCH 19/25] printk: introduce emergency messages -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Console messages are generally either critical or non-critical. Critical messages are messages such as crashes or sysrq output. diff --git a/debian/patches-rt/0020-locking-rtmutex-add-rwlock-implementation-based-on-r.patch b/debian/patches-rt/0020-locking-rtmutex-add-rwlock-implementation-based-on-r.patch index 865b9707e..2185f232c 100644 --- a/debian/patches-rt/0020-locking-rtmutex-add-rwlock-implementation-based-on-r.patch +++ b/debian/patches-rt/0020-locking-rtmutex-add-rwlock-implementation-based-on-r.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Thu, 12 Oct 2017 17:18:06 +0200 Subject: [PATCH 20/23] locking/rtmutex: add rwlock implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The implementation is bias-based, similar to the rwsem implementation. diff --git a/debian/patches-rt/0020-serial-8250-implement-write_atomic.patch b/debian/patches-rt/0020-serial-8250-implement-write_atomic.patch index 2ffa14cf0..88e670e0e 100644 --- a/debian/patches-rt/0020-serial-8250-implement-write_atomic.patch +++ b/debian/patches-rt/0020-serial-8250-implement-write_atomic.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:58 +0100 Subject: [PATCH 20/25] serial: 8250: implement write_atomic -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Implement a non-sleeping NMI-safe write_atomic console function in order to support emergency printk messages. diff --git a/debian/patches-rt/0021-locking-rtmutex-wire-up-RT-s-locking.patch b/debian/patches-rt/0021-locking-rtmutex-wire-up-RT-s-locking.patch index c46689960..74907d759 100644 --- a/debian/patches-rt/0021-locking-rtmutex-wire-up-RT-s-locking.patch +++ b/debian/patches-rt/0021-locking-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: [PATCH 21/23] locking/rtmutex: wire up RT's locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/0021-printk-implement-KERN_CONT.patch b/debian/patches-rt/0021-printk-implement-KERN_CONT.patch index b0fdbc7fb..153c99e7f 100644 --- a/debian/patches-rt/0021-printk-implement-KERN_CONT.patch +++ b/debian/patches-rt/0021-printk-implement-KERN_CONT.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:29:59 +0100 Subject: [PATCH 21/25] printk: implement KERN_CONT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Implement KERN_CONT based on the printing CPU rather than on the printing task. As long as the KERN_CONT messages are coming from the diff --git a/debian/patches-rt/0022-locking-rtmutex-add-ww_mutex-addon-for-mutex-rt.patch b/debian/patches-rt/0022-locking-rtmutex-add-ww_mutex-addon-for-mutex-rt.patch index 88bffb725..c8c0cb82e 100644 --- a/debian/patches-rt/0022-locking-rtmutex-add-ww_mutex-addon-for-mutex-rt.patch +++ b/debian/patches-rt/0022-locking-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: [PATCH 22/23] locking/rtmutex: add ww_mutex addon for mutex-rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- diff --git a/debian/patches-rt/0022-printk-implement-dev-kmsg.patch b/debian/patches-rt/0022-printk-implement-dev-kmsg.patch index 5f54c9ab3..4e0c1ad91 100644 --- a/debian/patches-rt/0022-printk-implement-dev-kmsg.patch +++ b/debian/patches-rt/0022-printk-implement-dev-kmsg.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:30:00 +0100 Subject: [PATCH 22/25] printk: implement /dev/kmsg -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Since printk messages are now logged to a new ring buffer, update the /dev/kmsg functions to pull the messages from there. diff --git a/debian/patches-rt/0023-locking-rtmutex-Use-custom-scheduling-function-for-s.patch b/debian/patches-rt/0023-locking-rtmutex-Use-custom-scheduling-function-for-s.patch index 5f68d0253..4ef80e09a 100644 --- a/debian/patches-rt/0023-locking-rtmutex-Use-custom-scheduling-function-for-s.patch +++ b/debian/patches-rt/0023-locking-rtmutex-Use-custom-scheduling-function-for-s.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 6 Oct 2020 13:07:17 +0200 Subject: [PATCH 23/23] locking/rtmutex: Use custom scheduling function for spin-schedule() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz PREEMPT_RT builds the rwsem, mutex, spinlock and rwlock typed locks on top of a rtmutex lock. While blocked task->pi_blocked_on is set diff --git a/debian/patches-rt/0023-printk-implement-syslog.patch b/debian/patches-rt/0023-printk-implement-syslog.patch index f3634abb2..5eee6133d 100644 --- a/debian/patches-rt/0023-printk-implement-syslog.patch +++ b/debian/patches-rt/0023-printk-implement-syslog.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:30:01 +0100 Subject: [PATCH 23/25] printk: implement syslog -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Since printk messages are now logged to a new ring buffer, update the syslog functions to pull the messages from there. diff --git a/debian/patches-rt/0024-printk-implement-kmsg_dump.patch b/debian/patches-rt/0024-printk-implement-kmsg_dump.patch index 73e7d1bd0..926cbf586 100644 --- a/debian/patches-rt/0024-printk-implement-kmsg_dump.patch +++ b/debian/patches-rt/0024-printk-implement-kmsg_dump.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:30:02 +0100 Subject: [PATCH 24/25] printk: implement kmsg_dump -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Since printk messages are now logged to a new ring buffer, update the kmsg_dump functions to pull the messages from there. diff --git a/debian/patches-rt/0024-xfrm-Use-sequence-counter-with-associated-spinlock.patch b/debian/patches-rt/0024-xfrm-Use-sequence-counter-with-associated-spinlock.patch index 7f4e9d26c..c09ce85f1 100644 --- a/debian/patches-rt/0024-xfrm-Use-sequence-counter-with-associated-spinlock.patch +++ b/debian/patches-rt/0024-xfrm-Use-sequence-counter-with-associated-spinlock.patch @@ -1,7 +1,7 @@ From: "Ahmed S. Darwish" <a.darwish@linutronix.de> Date: Wed, 10 Jun 2020 12:53:22 +0200 Subject: [PATCH 24/24] xfrm: Use sequence counter with associated spinlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz A sequence counter write side critical section must be protected by some form of locking to serialize writers. A plain seqcount_t does not diff --git a/debian/patches-rt/0025-printk-remove-unused-code.patch b/debian/patches-rt/0025-printk-remove-unused-code.patch index ea860c7de..98539d3ab 100644 --- a/debian/patches-rt/0025-printk-remove-unused-code.patch +++ b/debian/patches-rt/0025-printk-remove-unused-code.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 12 Feb 2019 15:30:03 +0100 Subject: [PATCH 25/25] printk: remove unused code -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Code relating to the safe context and anything dealing with the previous log buffer implementation is no longer in use. Remove it. diff --git a/debian/patches-rt/ARM-Allow-to-enable-RT.patch b/debian/patches-rt/ARM-Allow-to-enable-RT.patch index 69438ce1b..0603ff475 100644 --- a/debian/patches-rt/ARM-Allow-to-enable-RT.patch +++ b/debian/patches-rt/ARM-Allow-to-enable-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 11 Oct 2019 13:14:29 +0200 Subject: [PATCH] ARM: Allow to enable RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Allow to select RT. 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 8630fe652..941fedc69 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Probably happens on all ARM, with CONFIG_PREEMPT_RT diff --git a/debian/patches-rt/ARM64-Allow-to-enable-RT.patch b/debian/patches-rt/ARM64-Allow-to-enable-RT.patch index fbf4dd951..694c93162 100644 --- a/debian/patches-rt/ARM64-Allow-to-enable-RT.patch +++ b/debian/patches-rt/ARM64-Allow-to-enable-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 11 Oct 2019 13:14:35 +0200 Subject: [PATCH] ARM64: Allow to enable RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Allow to select RT. 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 0be05f6d9..762375c3b 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/POWERPC-Allow-to-enable-RT.patch b/debian/patches-rt/POWERPC-Allow-to-enable-RT.patch index c98cf4130..aaeadcd74 100644 --- a/debian/patches-rt/POWERPC-Allow-to-enable-RT.patch +++ b/debian/patches-rt/POWERPC-Allow-to-enable-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 11 Oct 2019 13:14:41 +0200 Subject: [PATCH] POWERPC: Allow to enable RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Allow to select RT. diff --git a/debian/patches-rt/Use-CONFIG_PREEMPTION.patch b/debian/patches-rt/Use-CONFIG_PREEMPTION.patch index fe5395cc8..2f3f24efc 100644 --- a/debian/patches-rt/Use-CONFIG_PREEMPTION.patch +++ b/debian/patches-rt/Use-CONFIG_PREEMPTION.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 26 Jul 2019 11:30:49 +0200 Subject: [PATCH] Use CONFIG_PREEMPTION -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Thisi is an all-in-one patch of the current `PREEMPTION' branch. diff --git a/debian/patches-rt/add_cpu_light.patch b/debian/patches-rt/add_cpu_light.patch index c0c0902bd..6e9884148 100644 --- a/debian/patches-rt/add_cpu_light.patch +++ b/debian/patches-rt/add_cpu_light.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat, 27 May 2017 19:02:06 +0200 Subject: kernel/sched: add {put|get}_cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- 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 0a90bc63f..65b796501 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-enable-highmem-for-rt.patch b/debian/patches-rt/arm-enable-highmem-for-rt.patch index ffa91acc9..b205ddfd9 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 37694bf7f..077ba4267 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-preempt-lazy-support.patch b/debian/patches-rt/arm-preempt-lazy-support.patch index 9d700d6df..70aa51633 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Implement the arm pieces for lazy preempt. diff --git a/debian/patches-rt/arm-remove-printk_nmi_.patch b/debian/patches-rt/arm-remove-printk_nmi_.patch index ed34e4e66..f93f4e776 100644 --- a/debian/patches-rt/arm-remove-printk_nmi_.patch +++ b/debian/patches-rt/arm-remove-printk_nmi_.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 15 Feb 2019 14:34:20 +0100 Subject: [PATCH] arm: remove printk_nmi_.*() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz It is no longer provided by the printk core code. 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 1d479138f..d961b600b 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 @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 25 Jul 2018 14:02:38 +0200 Subject: [PATCH] arm64: fpsimd: Delay freeing memory in fpsimd_flush_thread() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz fpsimd_flush_thread() invokes kfree() via sve_free() within a preempt disabled section which is not working on -RT. diff --git a/debian/patches-rt/block-mq-drop-preempt-disable.patch b/debian/patches-rt/block-mq-drop-preempt-disable.patch index 46f0673ec..31a7d7695 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/bus-mhi-Remove-include-of-rwlock_types.h.patch b/debian/patches-rt/bus-mhi-Remove-include-of-rwlock_types.h.patch index e3056b133..b80448d54 100644 --- a/debian/patches-rt/bus-mhi-Remove-include-of-rwlock_types.h.patch +++ b/debian/patches-rt/bus-mhi-Remove-include-of-rwlock_types.h.patch @@ -1,7 +1,7 @@ From: Clark Williams <clark.williams@gmail.com> Date: Sat, 12 Sep 2020 14:48:26 -0500 Subject: [PATCH] bus: mhi: Remove include of rwlock_types.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz rwlock.h should not be included directly. Instead linux/splinlock.h should be included. Including it directly will break the RT build. 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 2ad370b87..4308f1301 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch b/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch index 9c0d698ab..abbb3eee2 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 f39216041..c39a2348d 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-cryptd-add-a-lock-instead-preempt_disable-loc.patch b/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch index 22d060ee2..d319b3d6f 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 6ec5e9ce5..fc27b11b4 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/debugobjects-rt.patch b/debian/patches-rt/debugobjects-rt.patch index a0a2f4dbe..a4c840c16 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Avoid filling the pool / allocating memory with irqs off(). 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 4ea0466b3..04bd82e46 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 9d4b15d90..c003231af 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 a00b81f96..eb8ad88e8 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 1c1c5842d..741782b85 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/drm-i915-Don-t-disable-interrupts-on-PREEMPT_RT-duri.patch b/debian/patches-rt/drm-i915-Don-t-disable-interrupts-on-PREEMPT_RT-duri.patch index ad5090c21..c79b9bd9e 100644 --- a/debian/patches-rt/drm-i915-Don-t-disable-interrupts-on-PREEMPT_RT-duri.patch +++ b/debian/patches-rt/drm-i915-Don-t-disable-interrupts-on-PREEMPT_RT-duri.patch @@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com> Date: Sat, 27 Feb 2016 09:01:42 +0100 Subject: [PATCH] drm/i915: Don't disable interrupts on PREEMPT_RT during atomic updates -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Commit 8d7849db3eab7 ("drm/i915: Make sprite updates atomic") 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 6fed49f54..cd9e84094 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Luca Abeni reported this: | BUG: scheduling while atomic: kworker/u8:2/15203/0x00000003 diff --git a/debian/patches-rt/drm-i915-gt-Only-disable-interrupts-for-the-timeline.patch b/debian/patches-rt/drm-i915-gt-Only-disable-interrupts-for-the-timeline.patch index a1a0be148..0e4f4f2a3 100644 --- a/debian/patches-rt/drm-i915-gt-Only-disable-interrupts-for-the-timeline.patch +++ b/debian/patches-rt/drm-i915-gt-Only-disable-interrupts-for-the-timeline.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 7 Jul 2020 12:25:11 +0200 Subject: [PATCH] drm/i915/gt: Only disable interrupts for the timeline lock on !force-threaded -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz According to commit d67739268cf0e ("drm/i915/gt: Mark up the nested engine-pm timeline lock as irqsafe") 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 4d77f9e81..1ac3974e7 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch b/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch index caf3797ca..906d94145 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 8963a0ba9..8c5bbb1ce 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz In case the command line option "efi=noruntime" is default at built-time, the user could overwrite its state 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 58acc2553..972657b17 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/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 e537b5793..e32b49279 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-swait_queue-instead-of-waitqueue.patch b/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch index 98f49b6c1..7770a8f65 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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. diff --git a/debian/patches-rt/fs-namespace-use-cpu-chill-in-trylock-loops.patch b/debian/patches-rt/fs-namespace-use-cpu-chill-in-trylock-loops.patch index 22b9dc9b8..80285a5d8 100644 --- a/debian/patches-rt/fs-namespace-use-cpu-chill-in-trylock-loops.patch +++ b/debian/patches-rt/fs-namespace-use-cpu-chill-in-trylock-loops.patch @@ -1,7 +1,7 @@ Subject: fs: namespace: 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/ftrace-migrate-disable-tracing.patch b/debian/patches-rt/ftrace-migrate-disable-tracing.patch index 0feb4ee8c..3d511bd59 100644 --- a/debian/patches-rt/ftrace-migrate-disable-tracing.patch +++ b/debian/patches-rt/ftrace-migrate-disable-tracing.patch @@ -1,15 +1,15 @@ 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- include/linux/trace_events.h | 1 + - kernel/trace/trace.c | 16 ++++++++++------ + kernel/trace/trace.c | 25 +++++++++++++++++++------ kernel/trace/trace_events.c | 1 + kernel/trace/trace_output.c | 5 +++++ - 4 files changed, 17 insertions(+), 6 deletions(-) + 4 files changed, 26 insertions(+), 6 deletions(-) --- a/include/linux/trace_events.h +++ b/include/linux/trace_events.h @@ -23,16 +23,32 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> #define TRACE_EVENT_TYPE_MAX \ --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c -@@ -2457,6 +2457,8 @@ tracing_generic_entry_update(struct trac +@@ -2437,6 +2437,15 @@ enum print_line_t trace_handle_return(st + } + EXPORT_SYMBOL_GPL(trace_handle_return); + ++static unsigned short migration_disable_value(struct task_struct *tsk) ++{ ++#if defined(CONFIG_SMP) && defined(CONFIG_PREEMPT_RT) ++ return tsk ? tsk->migration_disabled : 0; ++#else ++ return 0; ++#endif ++} ++ + void + tracing_generic_entry_update(struct trace_entry *entry, unsigned short type, + unsigned long flags, int pc) +@@ -2457,6 +2466,8 @@ tracing_generic_entry_update(struct trac ((pc & SOFTIRQ_OFFSET) ? TRACE_FLAG_SOFTIRQ : 0) | (tif_need_resched() ? TRACE_FLAG_NEED_RESCHED : 0) | (test_preempt_need_resched() ? TRACE_FLAG_PREEMPT_RESCHED : 0); + -+ entry->migrate_disable = (tsk) ? tsk->migration_disabled & 0xFF : 0; ++ entry->migrate_disable = migration_disable_value(tsk); } EXPORT_SYMBOL_GPL(tracing_generic_entry_update); -@@ -3789,9 +3791,10 @@ static void print_lat_help_header(struct +@@ -3789,9 +3800,10 @@ static void print_lat_help_header(struct "# | / _----=> need-resched \n" "# || / _---=> hardirq/softirq \n" "# ||| / _--=> preempt-depth \n" @@ -46,7 +62,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } static void print_event_info(struct array_buffer *buf, struct seq_file *m) -@@ -3829,9 +3832,10 @@ static void print_func_help_header_irq(s +@@ -3829,9 +3841,10 @@ static void print_func_help_header_irq(s seq_printf(m, "# %.*s / _----=> need-resched\n", prec, space); seq_printf(m, "# %.*s| / _---=> hardirq/softirq\n", prec, space); seq_printf(m, "# %.*s|| / _--=> preempt-depth\n", prec, space); diff --git a/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch b/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch index 0d1e8ec54..ce4909fd4 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Creates long latencies for no value 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 a3f457626..edf8fb144 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/hrtimer-Allow-raw-wakeups-during-boot.patch b/debian/patches-rt/hrtimer-Allow-raw-wakeups-during-boot.patch index 5c9a563a7..be6c81583 100644 --- a/debian/patches-rt/hrtimer-Allow-raw-wakeups-during-boot.patch +++ b/debian/patches-rt/hrtimer-Allow-raw-wakeups-during-boot.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 9 Aug 2019 15:25:21 +0200 Subject: [PATCH] hrtimer: Allow raw wakeups during boot -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz There are a few wake-up timers during the early boot which are essencial for the system to make progress. At this stage there are no softirq spawn for the diff --git a/debian/patches-rt/io_wq-Make-io_wqe-lock-a-raw_spinlock_t.patch b/debian/patches-rt/io_wq-Make-io_wqe-lock-a-raw_spinlock_t.patch index 740db7952..5e0c3623d 100644 --- a/debian/patches-rt/io_wq-Make-io_wqe-lock-a-raw_spinlock_t.patch +++ b/debian/patches-rt/io_wq-Make-io_wqe-lock-a-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 19 Aug 2020 21:44:45 +0200 Subject: [PATCH] io_wq: Make io_wqe::lock a raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz During a context switch the scheduler invokes wq_worker_sleeping() with disabled preemption. Disabling preemption is needed because it protects 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 f08cb21e7..a2550be00 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 ac8f8f8b6..1448b571d 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 20117219b..6a02b9c56 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Disable stuff which is known to have issues on RT 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 6363167c2..b9256fea3 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 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 c05d53c4c..6f64d73ee 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz as it triggers: |CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141 diff --git a/debian/patches-rt/localversion.patch b/debian/patches-rt/localversion.patch index 90ac97f0d..a652479ae 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 @@ -+-rt15 ++-rt16 diff --git a/debian/patches-rt/lockdep-disable-self-test.patch b/debian/patches-rt/lockdep-disable-self-test.patch index 65f9bdb7b..57aca7896 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 c99424cae..570d31a16 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 8970a83e2..096a5a94d 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz "lockdep: Selftest: Only do hardirq context test for raw spinlock" disabled the execution of certain tests with PREEMPT_RT, 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 c3cef49d3..100ca137a 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz From: Yong Zhang <yong.zhang@windriver.com> diff --git a/debian/patches-rt/locking-Make-spinlock_t-and-rwlock_t-a-RCU-section-o.patch b/debian/patches-rt/locking-Make-spinlock_t-and-rwlock_t-a-RCU-section-o.patch index 71a4dd46a..887303aee 100644 --- a/debian/patches-rt/locking-Make-spinlock_t-and-rwlock_t-a-RCU-section-o.patch +++ b/debian/patches-rt/locking-Make-spinlock_t-and-rwlock_t-a-RCU-section-o.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 19 Nov 2019 09:25:04 +0100 Subject: [PATCH] locking: Make spinlock_t and rwlock_t a RCU section on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz On !RT a locked spinlock_t and rwlock_t disables preemption which implies a RCU read section. There is code that relies on that behaviour. 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 63b596bb1..1ea6665c6 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/md-raid5-percpu-handling-rt-aware.patch b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch index 0def4850d..f03e9f03e 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 b393ef763..20e46ec8f 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches-rt/mm-disable-sloub-rt.patch b/debian/patches-rt/mm-disable-sloub-rt.patch index fa8b317d1..ad0426da1 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Memory allocation disables interrupts as part of the allocation and freeing process. For -RT it is important that this section remain short and don't diff --git a/debian/patches-rt/mm-fix-exec-activate_mm-vs-TLB-shootdown-and-lazy-tl.patch b/debian/patches-rt/mm-fix-exec-activate_mm-vs-TLB-shootdown-and-lazy-tl.patch index 5678333af..4346bd24c 100644 --- a/debian/patches-rt/mm-fix-exec-activate_mm-vs-TLB-shootdown-and-lazy-tl.patch +++ b/debian/patches-rt/mm-fix-exec-activate_mm-vs-TLB-shootdown-and-lazy-tl.patch @@ -2,7 +2,7 @@ From: Nicholas Piggin <npiggin@gmail.com> Date: Fri, 28 Aug 2020 20:00:19 +1000 Subject: [PATCH] mm: fix exec activate_mm vs TLB shootdown and lazy tlb switching race -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Reading and modifying current->mm and current->active_mm and switching mm should be done with irqs off, to prevent races seeing an intermediate diff --git a/debian/patches-rt/mm-make-vmstat-rt-aware.patch b/debian/patches-rt/mm-make-vmstat-rt-aware.patch index 7f736d1c1..203b915b0 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 38da07b54..6626e6c14 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The following trace is triggered when running ltp oom test cases: diff --git a/debian/patches-rt/mm-memcontrol-Provide-a-local_lock-for-per-CPU-memcg.patch b/debian/patches-rt/mm-memcontrol-Provide-a-local_lock-for-per-CPU-memcg.patch index a2755f056..95a3289d2 100644 --- a/debian/patches-rt/mm-memcontrol-Provide-a-local_lock-for-per-CPU-memcg.patch +++ b/debian/patches-rt/mm-memcontrol-Provide-a-local_lock-for-per-CPU-memcg.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 18 Aug 2020 10:30:00 +0200 Subject: [PATCH] mm: memcontrol: Provide a local_lock for per-CPU memcg_stock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The interrupts are disabled to ensure CPU-local access to the per-CPU variable `memcg_stock'. 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 1df419293..4413f77cd 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-Use-migrate_disable-in-drain_local_pag.patch b/debian/patches-rt/mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch index 3d73b11ea..407b81ba8 100644 --- a/debian/patches-rt/mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch +++ b/debian/patches-rt/mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 2 Jul 2020 14:27:23 +0200 Subject: [PATCH] mm/page_alloc: Use migrate_disable() in drain_local_pages_wq() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz drain_local_pages_wq() disables preemption to avoid CPU migration during CPU hotplug. 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 76683e6c9..58447f107 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz rt-friendly per-cpu pages: convert the irqs-off per-cpu locking method into a preemptible, explicit-per-cpu-locks method. diff --git a/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch b/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch index f0c45c6bd..c0426bec9 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 4ba8dc322..42919ee5d 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-slub-Always-flush-the-delayed-empty-slubs-in-flus.patch b/debian/patches-rt/mm-slub-Always-flush-the-delayed-empty-slubs-in-flus.patch index 8df46f64f..3ff464b84 100644 --- a/debian/patches-rt/mm-slub-Always-flush-the-delayed-empty-slubs-in-flus.patch +++ b/debian/patches-rt/mm-slub-Always-flush-the-delayed-empty-slubs-in-flus.patch @@ -1,7 +1,7 @@ From: Kevin Hao <haokexin@gmail.com> Date: Mon, 4 May 2020 11:34:07 +0800 Subject: [PATCH] mm: slub: Always flush the delayed empty slubs in flush_all() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz After commit f0b231101c94 ("mm/SLUB: delay giving back empty slubs to IRQ enabled regions"), when the free_slab() is invoked with the IRQ diff --git a/debian/patches-rt/mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch b/debian/patches-rt/mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch index d1ff6df04..fd3b9fa7c 100644 --- a/debian/patches-rt/mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch +++ b/debian/patches-rt/mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 16 Jul 2020 18:47:50 +0200 Subject: [PATCH] mm/slub: Make object_map_lock a raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The variable object_map is protected by object_map_lock. The lock is always acquired in debug code and within already atomic context 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 bccaa5003..a6b8f95fd 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-workingset-replace-IRQ-off-check-with-a-lockdep-a.patch b/debian/patches-rt/mm-workingset-replace-IRQ-off-check-with-a-lockdep-a.patch index 39dd321ab..fdf7ba387 100644 --- a/debian/patches-rt/mm-workingset-replace-IRQ-off-check-with-a-lockdep-a.patch +++ b/debian/patches-rt/mm-workingset-replace-IRQ-off-check-with-a-lockdep-a.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 11 Feb 2019 10:40:46 +0100 Subject: [PATCH] mm: workingset: replace IRQ-off check with a lockdep assert. -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Commit diff --git a/debian/patches-rt/mm-zswap-Use-local-lock-to-protect-per-CPU-data.patch b/debian/patches-rt/mm-zswap-Use-local-lock-to-protect-per-CPU-data.patch index 2a1f9ba40..479f40a81 100644 --- a/debian/patches-rt/mm-zswap-Use-local-lock-to-protect-per-CPU-data.patch +++ b/debian/patches-rt/mm-zswap-Use-local-lock-to-protect-per-CPU-data.patch @@ -1,7 +1,7 @@ From: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com> Date: Tue, 25 Jun 2019 11:28:04 -0300 Subject: [PATCH] mm/zswap: Use local lock to protect per-CPU data -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz zwap uses per-CPU compression. The per-CPU data pointer is acquired with get_cpu_ptr() which implicitly disables preemption. It allocates 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 0c2c9dc5b..4fbee64bc 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/net--Move-lockdep-where-it-belongs.patch b/debian/patches-rt/net--Move-lockdep-where-it-belongs.patch index c3feeaf08..537ee3e00 100644 --- a/debian/patches-rt/net--Move-lockdep-where-it-belongs.patch +++ b/debian/patches-rt/net--Move-lockdep-where-it-belongs.patch @@ -1,7 +1,7 @@ Subject: net: Move lockdep where it belongs From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 08 Sep 2020 07:32:20 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- diff --git a/debian/patches-rt/net-Dequeue-in-dev_cpu_dead-without-the-lock.patch b/debian/patches-rt/net-Dequeue-in-dev_cpu_dead-without-the-lock.patch index 85588a427..e38d60d5a 100644 --- a/debian/patches-rt/net-Dequeue-in-dev_cpu_dead-without-the-lock.patch +++ b/debian/patches-rt/net-Dequeue-in-dev_cpu_dead-without-the-lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 16 Sep 2020 16:15:39 +0200 Subject: [PATCH] net: Dequeue in dev_cpu_dead() without the lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Upstream uses skb_dequeue() to acquire lock of `input_pkt_queue'. The reason is to synchronize against a remote CPU which still thinks that the CPU is online diff --git a/debian/patches-rt/net-Properly-annotate-the-try-lock-for-the-seqlock.patch b/debian/patches-rt/net-Properly-annotate-the-try-lock-for-the-seqlock.patch index 3e3c65804..5c0f31acb 100644 --- a/debian/patches-rt/net-Properly-annotate-the-try-lock-for-the-seqlock.patch +++ b/debian/patches-rt/net-Properly-annotate-the-try-lock-for-the-seqlock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 8 Sep 2020 16:57:11 +0200 Subject: [PATCH] net: Properly annotate the try-lock for the seqlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz In patch ("net/Qdisc: use a seqlock instead seqcount") 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 02fa9aaed..d91d8b773 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-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 bbdbe72b6..6d88982e4 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 1b05e00e2..b3d4630c1 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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_disable_NET_RX_BUSY_POLL.patch b/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch index 202e86925..c39311f00 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 on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz napi_busy_loop() disables preemption and performs a NAPI poll. We can't acquire sleeping locks with disabled preemption so we would have to work around this diff --git a/debian/patches-rt/oleg-signal-rt-fix.patch b/debian/patches-rt/oleg-signal-rt-fix.patch index 8f46242cd..d304821e0 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 ac16f91d6..f28bf6020 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Disable on -RT. If this is invoked from irq-context we will have problems to acquire the sleeping lock. diff --git a/debian/patches-rt/pid.h-include-atomic.h.patch b/debian/patches-rt/pid.h-include-atomic.h.patch index 9953e649e..73708c497 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz This patch fixes build error: CC kernel/pid_namespace.o diff --git a/debian/patches-rt/power-disable-highmem-on-rt.patch b/debian/patches-rt/power-disable-highmem-on-rt.patch index 050a317ab..04090e480 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The current highmem handling on -RT is not compatible and needs fixups. 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 ff59c09ac..15b2f926b 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 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 b0e345b39..4998f01a6 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Implement the powerpc pieces for lazy preempt. diff --git a/debian/patches-rt/powerpc-pseries-iommu-Use-a-locallock-instead-local_ir.patch b/debian/patches-rt/powerpc-pseries-iommu-Use-a-locallock-instead-local_ir.patch index 1ded20ac9..ba327b321 100644 --- a/debian/patches-rt/powerpc-pseries-iommu-Use-a-locallock-instead-local_ir.patch +++ b/debian/patches-rt/powerpc-pseries-iommu-Use-a-locallock-instead-local_ir.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 26 Mar 2019 18:31:54 +0100 Subject: [PATCH] powerpc/pseries/iommu: Use a locallock instead local_irq_save() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The locallock protects the per-CPU variable tce_page. The function attempts to allocate memory while tce_page is protected (by disabling diff --git a/debian/patches-rt/powerpc-remove-printk_nmi_.patch b/debian/patches-rt/powerpc-remove-printk_nmi_.patch index 312875214..e06db159d 100644 --- a/debian/patches-rt/powerpc-remove-printk_nmi_.patch +++ b/debian/patches-rt/powerpc-remove-printk_nmi_.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 15 Feb 2019 14:34:20 +0100 Subject: [PATCH] powerpc: remove printk_nmi_.*() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz It is no longer provided by the printk core code. diff --git a/debian/patches-rt/powerpc-stackprotector-work-around-stack-guard-init-.patch b/debian/patches-rt/powerpc-stackprotector-work-around-stack-guard-init-.patch index 8917a7ced..36ef7fc91 100644 --- a/debian/patches-rt/powerpc-stackprotector-work-around-stack-guard-init-.patch +++ b/debian/patches-rt/powerpc-stackprotector-work-around-stack-guard-init-.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 26 Mar 2019 18:31:29 +0100 Subject: [PATCH ] powerpc/stackprotector: work around stack-guard init from atomic -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz This is invoked from the secondary CPU in atomic context. On x86 we use tsc instead. On Power we XOR it against mftb() so lets use stack address diff --git a/debian/patches-rt/preempt-lazy-support.patch b/debian/patches-rt/preempt-lazy-support.patch index 034583918..71a642a73 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz It has become an obsession to mitigate the determinism vs. throughput loss of RT. Looking at the mainline semantics of preemption points @@ -485,7 +485,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c -@@ -2444,6 +2444,7 @@ tracing_generic_entry_update(struct trac +@@ -2453,6 +2453,7 @@ tracing_generic_entry_update(struct trac struct task_struct *tsk = current; entry->preempt_count = pc & 0xff; @@ -493,7 +493,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> entry->pid = (tsk) ? tsk->pid : 0; entry->type = type; entry->flags = -@@ -2455,7 +2456,8 @@ tracing_generic_entry_update(struct trac +@@ -2464,7 +2465,8 @@ tracing_generic_entry_update(struct trac ((pc & NMI_MASK ) ? TRACE_FLAG_NMI : 0) | ((pc & HARDIRQ_MASK) ? TRACE_FLAG_HARDIRQ : 0) | ((pc & SOFTIRQ_OFFSET) ? TRACE_FLAG_SOFTIRQ : 0) | @@ -502,8 +502,8 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> + (need_resched_lazy() ? TRACE_FLAG_NEED_RESCHED_LAZY : 0) | (test_preempt_need_resched() ? TRACE_FLAG_PREEMPT_RESCHED : 0); - entry->migrate_disable = (tsk) ? tsk->migration_disabled & 0xFF : 0; -@@ -3786,15 +3788,17 @@ unsigned long trace_total_entries(struct + entry->migrate_disable = migration_disable_value(tsk); +@@ -3795,15 +3797,17 @@ unsigned long trace_total_entries(struct static void print_lat_help_header(struct seq_file *m) { @@ -530,7 +530,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> } static void print_event_info(struct array_buffer *buf, struct seq_file *m) -@@ -3828,14 +3832,16 @@ static void print_func_help_header_irq(s +@@ -3837,14 +3841,16 @@ static void print_func_help_header_irq(s print_event_info(buf, m); diff --git a/debian/patches-rt/preempt-nort-rt-variants.patch b/debian/patches-rt/preempt-nort-rt-variants.patch index 02b9efd0a..2a133e7da 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-Force-a-line-break-on-pr_cont-n.patch b/debian/patches-rt/printk-Force-a-line-break-on-pr_cont-n.patch index 8fd3c0175..ab9711301 100644 --- a/debian/patches-rt/printk-Force-a-line-break-on-pr_cont-n.patch +++ b/debian/patches-rt/printk-Force-a-line-break-on-pr_cont-n.patch @@ -4,7 +4,7 @@ Subject: [PATCH] printk: Force a line break on pr_cont("\n") 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Since the printk rework, pr_cont("\n") will not lead to a line break. A new line will only be created if diff --git a/debian/patches-rt/printk-console-must-not-schedule-for-drivers.patch b/debian/patches-rt/printk-console-must-not-schedule-for-drivers.patch index b67d8094a..f0d15e9c4 100644 --- a/debian/patches-rt/printk-console-must-not-schedule-for-drivers.patch +++ b/debian/patches-rt/printk-console-must-not-schedule-for-drivers.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Mon, 6 Apr 2020 23:22:17 +0200 Subject: [PATCH] printk: console must not schedule for drivers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Even though the printk kthread is always preemptible, it is still not allowed to call cond_resched() from within console drivers. The diff --git a/debian/patches-rt/printk-devkmsg-llseek-reset-clear-if-it-is-lost.patch b/debian/patches-rt/printk-devkmsg-llseek-reset-clear-if-it-is-lost.patch index e87dfe793..a08669612 100644 --- a/debian/patches-rt/printk-devkmsg-llseek-reset-clear-if-it-is-lost.patch +++ b/debian/patches-rt/printk-devkmsg-llseek-reset-clear-if-it-is-lost.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Fri, 22 Feb 2019 23:02:44 +0100 Subject: [PATCH] printk: devkmsg: llseek: reset clear if it is lost -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz SEEK_DATA will seek to the last clear record. If this clear record is no longer in the ring buffer, devkmsg_llseek() will go into an diff --git a/debian/patches-rt/printk-devkmsg-read-Return-EPIPE-when-the-first-mess.patch b/debian/patches-rt/printk-devkmsg-read-Return-EPIPE-when-the-first-mess.patch index e4b9ceb41..5fe870908 100644 --- a/debian/patches-rt/printk-devkmsg-read-Return-EPIPE-when-the-first-mess.patch +++ b/debian/patches-rt/printk-devkmsg-read-Return-EPIPE-when-the-first-mess.patch @@ -2,7 +2,7 @@ From: He Zhe <zhe.he@windriver.com> Date: Tue, 24 Sep 2019 15:26:39 +0800 Subject: [PATCH] printk: devkmsg: read: Return EPIPE when the first message user-space wants has gone -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz When user-space wants to read the first message, that is when user->seq is 0, and that message has gone, it currently automatically resets diff --git a/debian/patches-rt/printk-fix-ifnullfree.cocci-warnings.patch b/debian/patches-rt/printk-fix-ifnullfree.cocci-warnings.patch index 24f917f1b..73bfb6276 100644 --- a/debian/patches-rt/printk-fix-ifnullfree.cocci-warnings.patch +++ b/debian/patches-rt/printk-fix-ifnullfree.cocci-warnings.patch @@ -1,7 +1,7 @@ From: Julia Lawall <julia.lawall@inria.fr> Date: Fri, 24 Jul 2020 12:05:31 +0200 Subject: [PATCH] printk: fix ifnullfree.cocci warnings -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Make the code a little simpler by dropping some unneeded tests. diff --git a/debian/patches-rt/printk-hack-out-emergency-loglevel-usage.patch b/debian/patches-rt/printk-hack-out-emergency-loglevel-usage.patch index a90d57229..b77eb29f7 100644 --- a/debian/patches-rt/printk-hack-out-emergency-loglevel-usage.patch +++ b/debian/patches-rt/printk-hack-out-emergency-loglevel-usage.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Tue, 3 Dec 2019 09:14:57 +0100 Subject: [PATCH] printk: hack out emergency loglevel usage -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Instead of using an emergency loglevel to determine if atomic messages should be printed, use oops_in_progress. This conforms diff --git a/debian/patches-rt/printk-handle-iterating-while-buffer-changing.patch b/debian/patches-rt/printk-handle-iterating-while-buffer-changing.patch index e8d001b2b..91c483460 100644 --- a/debian/patches-rt/printk-handle-iterating-while-buffer-changing.patch +++ b/debian/patches-rt/printk-handle-iterating-while-buffer-changing.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Mon, 7 Oct 2019 16:20:39 +0200 Subject: [PATCH] printk: handle iterating while buffer changing -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The syslog and kmsg_dump readers are provided buffers to fill. Both try to maximize the provided buffer usage by calculating the diff --git a/debian/patches-rt/printk-kmsg_dump-remove-mutex-usage.patch b/debian/patches-rt/printk-kmsg_dump-remove-mutex-usage.patch index bad7ef87b..388d0e590 100644 --- a/debian/patches-rt/printk-kmsg_dump-remove-mutex-usage.patch +++ b/debian/patches-rt/printk-kmsg_dump-remove-mutex-usage.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Wed, 24 Apr 2019 16:36:04 +0200 Subject: [PATCH] printk: kmsg_dump: remove mutex usage -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The kmsg dumper can be called from any context, but the dumping helpers were using a mutex to synchronize the iterator against diff --git a/debian/patches-rt/printk-only-allow-kernel-to-emergency-message.patch b/debian/patches-rt/printk-only-allow-kernel-to-emergency-message.patch index 6aa27f8ba..a18cdb268 100644 --- a/debian/patches-rt/printk-only-allow-kernel-to-emergency-message.patch +++ b/debian/patches-rt/printk-only-allow-kernel-to-emergency-message.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Sun, 17 Feb 2019 03:11:20 +0100 Subject: [PATCH] printk: only allow kernel to emergency message -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Emergency messages exist as a mechanism for the kernel to communicate critical information to users. It is not meant for diff --git a/debian/patches-rt/printk-print-rate-limitted-message-as-info.patch b/debian/patches-rt/printk-print-rate-limitted-message-as-info.patch index 00f94524e..a241770d9 100644 --- a/debian/patches-rt/printk-print-rate-limitted-message-as-info.patch +++ b/debian/patches-rt/printk-print-rate-limitted-message-as-info.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 22 Feb 2019 12:47:13 +0100 Subject: [PATCH] printk: print "rate-limitted" message as info -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz If messages which are injected via kmsg are dropped then they don't need to be printed as warnings. This is to avoid latency spikes if the diff --git a/debian/patches-rt/printk-set-deferred-to-default-loglevel-enforce-mask.patch b/debian/patches-rt/printk-set-deferred-to-default-loglevel-enforce-mask.patch index bee95aae3..586c529ee 100644 --- a/debian/patches-rt/printk-set-deferred-to-default-loglevel-enforce-mask.patch +++ b/debian/patches-rt/printk-set-deferred-to-default-loglevel-enforce-mask.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Thu, 14 Feb 2019 23:13:30 +0100 Subject: [PATCH] printk: set deferred to default loglevel, enforce mask -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz All messages printed via vpritnk_deferred() were being automatically treated as emergency messages. 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 bf5915858..72825af0e 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz As explained by Alexander Fyodorov <halcy@yandex.ru>: 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 c54b59ce4..80a7989eb 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Delegate the random insertion to the forced threaded interrupt handler. Store the return IP of the hard interrupt handler in the irq diff --git a/debian/patches-rt/rcu--Prevent-false-positive-softirq-warning-on-RT.patch b/debian/patches-rt/rcu--Prevent-false-positive-softirq-warning-on-RT.patch index f947a6735..273c75da1 100644 --- a/debian/patches-rt/rcu--Prevent-false-positive-softirq-warning-on-RT.patch +++ b/debian/patches-rt/rcu--Prevent-false-positive-softirq-warning-on-RT.patch @@ -1,7 +1,7 @@ Subject: rcu: Prevent false positive softirq warning on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 31 Aug 2020 17:26:08 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Soft interrupt disabled sections can legitimately be preempted or schedule out when blocking on a lock on RT enabled kernels so the RCU preempt check diff --git a/debian/patches-rt/rcu-Use-rcuc-threads-on-PREEMPT_RT-as-we-did.patch b/debian/patches-rt/rcu-Use-rcuc-threads-on-PREEMPT_RT-as-we-did.patch index e431bf472..d8925c3ad 100644 --- a/debian/patches-rt/rcu-Use-rcuc-threads-on-PREEMPT_RT-as-we-did.patch +++ b/debian/patches-rt/rcu-Use-rcuc-threads-on-PREEMPT_RT-as-we-did.patch @@ -1,7 +1,7 @@ From: Scott Wood <swood@redhat.com> Date: Wed, 11 Sep 2019 17:57:28 +0100 Subject: [PATCH] rcu: Use rcuc threads on PREEMPT_RT as we did -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz While switching to the reworked RCU-thread code, it has been forgotten to enable the thread processing on -RT. 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 d64927603..05deda323 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 dcfad6e98..dec0af704 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/rcutorture-Avoid-problematic-critical-section-nestin.patch b/debian/patches-rt/rcutorture-Avoid-problematic-critical-section-nestin.patch index 36fc449a5..7731d907a 100644 --- a/debian/patches-rt/rcutorture-Avoid-problematic-critical-section-nestin.patch +++ b/debian/patches-rt/rcutorture-Avoid-problematic-critical-section-nestin.patch @@ -2,7 +2,7 @@ From: Scott Wood <swood@redhat.com> Date: Wed, 11 Sep 2019 17:57:29 +0100 Subject: [PATCH] rcutorture: Avoid problematic critical section nesting on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz rcutorture was generating some nesting scenarios that are not reasonable. Constrain the state selection to avoid them. diff --git a/debian/patches-rt/rt-introduce-cpu-chill.patch b/debian/patches-rt/rt-introduce-cpu-chill.patch index 7a521bbd2..ba5bd3211 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 f35435d80..be3485177 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/sched-disable-rt-group-sched-on-rt.patch b/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch index fb9f98349..e399ab539 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Carsten reported problems when running: diff --git a/debian/patches-rt/sched-disable-ttwu-queue.patch b/debian/patches-rt/sched-disable-ttwu-queue.patch index b2a4c029b..6b623aef6 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-limit-nr-migrate.patch b/debian/patches-rt/sched-limit-nr-migrate.patch index 0acd2e2ac..d5581cf9e 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 837fb4734..dfc17ae19 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz RT changes the rcu_preempt_depth semantics, so we cannot check for it in might_sleep(). diff --git a/debian/patches-rt/sched-mmdrop-delayed.patch b/debian/patches-rt/sched-mmdrop-delayed.patch index 15f1594ea..186c9b509 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Takes sleeping locks and calls into the memory allocator, so nothing we want to do in task switch and oder atomic contexts. diff --git a/debian/patches-rt/scsi-fcoe-rt-aware.patch b/debian/patches-rt/scsi-fcoe-rt-aware.patch index 7f8443ced..6997721b0 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-Fix-multiple-kernel-doc-warnings.patch b/debian/patches-rt/seqlock-Fix-multiple-kernel-doc-warnings.patch index ef0fba79d..0885a4942 100644 --- a/debian/patches-rt/seqlock-Fix-multiple-kernel-doc-warnings.patch +++ b/debian/patches-rt/seqlock-Fix-multiple-kernel-doc-warnings.patch @@ -1,7 +1,7 @@ From: Randy Dunlap <rdunlap@infradead.org> Date: Sun, 16 Aug 2020 17:02:00 -0700 Subject: [PATCH] seqlock: Fix multiple kernel-doc warnings -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Fix kernel-doc warnings in <linux/seqlock.h>. diff --git a/debian/patches-rt/serial-8250-export-symbols-which-are-used-by-symbols.patch b/debian/patches-rt/serial-8250-export-symbols-which-are-used-by-symbols.patch index 7781aef10..71831575b 100644 --- a/debian/patches-rt/serial-8250-export-symbols-which-are-used-by-symbols.patch +++ b/debian/patches-rt/serial-8250-export-symbols-which-are-used-by-symbols.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat, 16 Feb 2019 09:02:00 +0100 Subject: [PATCH] serial: 8250: export symbols which are used by symbols -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- diff --git a/debian/patches-rt/serial-8250-fsl-ingenic-mtk-fix-atomic-console.patch b/debian/patches-rt/serial-8250-fsl-ingenic-mtk-fix-atomic-console.patch index a188e870c..ef9bfb629 100644 --- a/debian/patches-rt/serial-8250-fsl-ingenic-mtk-fix-atomic-console.patch +++ b/debian/patches-rt/serial-8250-fsl-ingenic-mtk-fix-atomic-console.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Fri, 10 Jan 2020 16:45:32 +0106 Subject: [PATCH] serial: 8250: fsl/ingenic/mtk: fix atomic console -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz A few 8250 implementations have their own IER access. If the port is a console, wrap the accesses with console_atomic_lock. diff --git a/debian/patches-rt/serial-8250-only-atomic-lock-for-console.patch b/debian/patches-rt/serial-8250-only-atomic-lock-for-console.patch index 9c79c5424..dc4846a95 100644 --- a/debian/patches-rt/serial-8250-only-atomic-lock-for-console.patch +++ b/debian/patches-rt/serial-8250-only-atomic-lock-for-console.patch @@ -1,7 +1,7 @@ From: John Ogness <john.ogness@linutronix.de> Date: Fri, 10 Jan 2020 16:45:31 +0106 Subject: [PATCH] serial: 8250: only atomic lock for console -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The atomic console implementation requires that IER is synchronized between atomic and non-atomic usage. However, it was implemented such diff --git a/debian/patches-rt/serial-8250-remove-that-trylock-in-serial8250_consol.patch b/debian/patches-rt/serial-8250-remove-that-trylock-in-serial8250_consol.patch index 20e3d794e..0b3b896a1 100644 --- a/debian/patches-rt/serial-8250-remove-that-trylock-in-serial8250_consol.patch +++ b/debian/patches-rt/serial-8250-remove-that-trylock-in-serial8250_consol.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 14 Feb 2019 17:38:24 +0100 Subject: [PATCH] serial: 8250: remove that trylock in serial8250_console_write_atomic() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz This does not work as rtmutex in NMI context. As per John, it is not needed. diff --git a/debian/patches-rt/series b/debian/patches-rt/series index 26a10ebbd..1a9a9eb1e 100644 --- a/debian/patches-rt/series +++ b/debian/patches-rt/series @@ -126,6 +126,7 @@ tpm-remove-tpm_dev_wq_lock.patch ############################################################ shmem-Use-raw_spinlock_t-for-stat_lock.patch net--Move-lockdep-where-it-belongs.patch +tcp-Remove-superfluous-BH-disable-around-listening_h.patch # SoftIRQ x86-fpu--Do-not-disable-BH-on-RT.patch diff --git a/debian/patches-rt/shmem-Use-raw_spinlock_t-for-stat_lock.patch b/debian/patches-rt/shmem-Use-raw_spinlock_t-for-stat_lock.patch index 1c882122a..10917f36b 100644 --- a/debian/patches-rt/shmem-Use-raw_spinlock_t-for-stat_lock.patch +++ b/debian/patches-rt/shmem-Use-raw_spinlock_t-for-stat_lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Fri, 14 Aug 2020 18:53:34 +0200 Subject: [PATCH] shmem: Use raw_spinlock_t for ->stat_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Each CPU has SHMEM_INO_BATCH inodes available in `->ino_batch' which is per-CPU. Access here is serialized by disabling preemption. If the pool is diff --git a/debian/patches-rt/signal-Prevent-double-free-of-user-struct.patch b/debian/patches-rt/signal-Prevent-double-free-of-user-struct.patch index 5d06dc789..b6f7b9a5f 100644 --- a/debian/patches-rt/signal-Prevent-double-free-of-user-struct.patch +++ b/debian/patches-rt/signal-Prevent-double-free-of-user-struct.patch @@ -1,7 +1,7 @@ From: Matt Fleming <matt@codeblueprint.co.uk> Date: Tue, 7 Apr 2020 10:54:13 +0100 Subject: [PATCH] signal: Prevent double-free of user struct -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The way user struct reference counting works changed significantly with, diff --git a/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch b/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch index 0d8c9a560..797ed91cf 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 8a9c69d62..1761801c3 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 e4b9de358..1e79f841c 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 997a42493..b57c2b4f4 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 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 32a0487c5..5866d9588 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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--Add-RT-variant.patch b/debian/patches-rt/softirq--Add-RT-variant.patch index 61068568f..53c5f361c 100644 --- a/debian/patches-rt/softirq--Add-RT-variant.patch +++ b/debian/patches-rt/softirq--Add-RT-variant.patch @@ -1,7 +1,7 @@ Subject: softirq: Add RT variant From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 21 Sep 2020 17:26:19 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- diff --git a/debian/patches-rt/softirq--Replace-barrier---with-cpu_relax---in-tasklet_unlock_wait--.patch b/debian/patches-rt/softirq--Replace-barrier---with-cpu_relax---in-tasklet_unlock_wait--.patch index 111d08882..ec902b1f0 100644 --- a/debian/patches-rt/softirq--Replace-barrier---with-cpu_relax---in-tasklet_unlock_wait--.patch +++ b/debian/patches-rt/softirq--Replace-barrier---with-cpu_relax---in-tasklet_unlock_wait--.patch @@ -1,7 +1,7 @@ Subject: softirq: Replace barrier() with cpu_relax() in tasklet_unlock_wait() From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 31 Aug 2020 15:12:38 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz A barrier() in a tight loop which waits for something to happen on a remote CPU is a pointless exercise. Replace it with cpu_relax() which allows HT 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 c1ed5d47e..389bdf008 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 0144a3741..477a2cbcc 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/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 fb6dc4583..a236ae102 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 8ac24a7b8..aeb26f3b0 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Add a /sys/kernel entry to indicate that the kernel is a realtime kernel. diff --git a/debian/patches-rt/tasklets--Avoid-cancel-kill-deadlock-on-RT.patch b/debian/patches-rt/tasklets--Avoid-cancel-kill-deadlock-on-RT.patch index 61ba12cfc..afff8a1ed 100644 --- a/debian/patches-rt/tasklets--Avoid-cancel-kill-deadlock-on-RT.patch +++ b/debian/patches-rt/tasklets--Avoid-cancel-kill-deadlock-on-RT.patch @@ -1,7 +1,7 @@ Subject: tasklets: Avoid cancel/kill deadlock on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 21 Sep 2020 17:47:34 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- diff --git a/debian/patches-rt/tasklets-Use-static-line-for-functions.patch b/debian/patches-rt/tasklets-Use-static-line-for-functions.patch index 799f282c1..72824e8a6 100644 --- a/debian/patches-rt/tasklets-Use-static-line-for-functions.patch +++ b/debian/patches-rt/tasklets-Use-static-line-for-functions.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 7 Sep 2020 22:57:32 +0200 Subject: [PATCH] tasklets: Use static line for functions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Inlines exist for a reason. diff --git a/debian/patches-rt/tcp-Remove-superfluous-BH-disable-around-listening_h.patch b/debian/patches-rt/tcp-Remove-superfluous-BH-disable-around-listening_h.patch new file mode 100644 index 000000000..c3e986abc --- /dev/null +++ b/debian/patches-rt/tcp-Remove-superfluous-BH-disable-around-listening_h.patch @@ -0,0 +1,104 @@ +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Mon, 12 Oct 2020 17:33:54 +0200 +Subject: [PATCH] tcp: Remove superfluous BH-disable around listening_hash +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz + +Commit + 9652dc2eb9e40 ("tcp: relax listening_hash operations") + +removed the need to disable bottom half while acquiring +listening_hash.lock. There are still two callers left which disable +bottom half before the lock is acquired. + +Drop local_bh_disable() around __inet_hash() which acquires +listening_hash->lock, invoke inet_ehash_nolisten() with disabled BH. +inet_unhash() conditionally acquires listening_hash->lock. + +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + net/ipv4/inet_hashtables.c | 19 ++++++++++++------- + net/ipv6/inet6_hashtables.c | 5 +---- + 2 files changed, 13 insertions(+), 11 deletions(-) + +diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c +index 239e54474b653..fcb105cbb5465 100644 +--- a/net/ipv4/inet_hashtables.c ++++ b/net/ipv4/inet_hashtables.c +@@ -585,7 +585,9 @@ int __inet_hash(struct sock *sk, struct sock *osk) + int err = 0; + + if (sk->sk_state != TCP_LISTEN) { ++ local_bh_disable(); + inet_ehash_nolisten(sk, osk); ++ local_bh_enable(); + return 0; + } + WARN_ON(!sk_unhashed(sk)); +@@ -617,11 +619,8 @@ int inet_hash(struct sock *sk) + { + int err = 0; + +- if (sk->sk_state != TCP_CLOSE) { +- local_bh_disable(); ++ if (sk->sk_state != TCP_CLOSE) + err = __inet_hash(sk, NULL); +- local_bh_enable(); +- } + + return err; + } +@@ -632,17 +631,20 @@ void inet_unhash(struct sock *sk) + struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo; + struct inet_listen_hashbucket *ilb = NULL; + spinlock_t *lock; ++ bool state_listen; + + if (sk_unhashed(sk)) + return; + + if (sk->sk_state == TCP_LISTEN) { ++ state_listen = true; + ilb = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)]; +- lock = &ilb->lock; ++ spin_lock(&ilb->lock); + } else { ++ state_listen = false; + lock = inet_ehash_lockp(hashinfo, sk->sk_hash); ++ spin_lock_bh(lock); + } +- spin_lock_bh(lock); + if (sk_unhashed(sk)) + goto unlock; + +@@ -655,7 +657,10 @@ void inet_unhash(struct sock *sk) + __sk_nulls_del_node_init_rcu(sk); + sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); + unlock: +- spin_unlock_bh(lock); ++ if (state_listen) ++ spin_unlock(&ilb->lock); ++ else ++ spin_unlock_bh(lock); + } + EXPORT_SYMBOL_GPL(inet_unhash); + +diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c +index 2d3add9e61162..50fd17cbf3ec7 100644 +--- a/net/ipv6/inet6_hashtables.c ++++ b/net/ipv6/inet6_hashtables.c +@@ -335,11 +335,8 @@ int inet6_hash(struct sock *sk) + { + int err = 0; + +- if (sk->sk_state != TCP_CLOSE) { +- local_bh_disable(); ++ if (sk->sk_state != TCP_CLOSE) + err = __inet_hash(sk, NULL); +- local_bh_enable(); +- } + + return err; + } +-- +2.28.0 + diff --git a/debian/patches-rt/tick-sched--Prevent-false-positive-softirq-pending-warnings-on-RT.patch b/debian/patches-rt/tick-sched--Prevent-false-positive-softirq-pending-warnings-on-RT.patch index 0c96d2b1d..0bc8602c6 100644 --- a/debian/patches-rt/tick-sched--Prevent-false-positive-softirq-pending-warnings-on-RT.patch +++ b/debian/patches-rt/tick-sched--Prevent-false-positive-softirq-pending-warnings-on-RT.patch @@ -1,7 +1,7 @@ Subject: tick/sched: Prevent false positive softirq pending warnings on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 31 Aug 2020 17:02:36 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz On RT a task which has soft interrupts disabled can block on a lock and schedule out to idle while soft interrupts are pending. This triggers the diff --git a/debian/patches-rt/tpm-remove-tpm_dev_wq_lock.patch b/debian/patches-rt/tpm-remove-tpm_dev_wq_lock.patch index 75a59407f..a17a24e4f 100644 --- a/debian/patches-rt/tpm-remove-tpm_dev_wq_lock.patch +++ b/debian/patches-rt/tpm-remove-tpm_dev_wq_lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 11 Feb 2019 11:33:11 +0100 Subject: [PATCH] tpm: remove tpm_dev_wq_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Added in commit 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 60176a02a..3dbbab4cc 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/u64_stats-Disable-preemption-on-32bit-UP-SMP-with-RT.patch b/debian/patches-rt/u64_stats-Disable-preemption-on-32bit-UP-SMP-with-RT.patch index 64a456567..28267b0f1 100644 --- a/debian/patches-rt/u64_stats-Disable-preemption-on-32bit-UP-SMP-with-RT.patch +++ b/debian/patches-rt/u64_stats-Disable-preemption-on-32bit-UP-SMP-with-RT.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Mon, 17 Aug 2020 12:28:10 +0200 Subject: [PATCH] u64_stats: Disable preemption on 32bit-UP/SMP with RT during updates -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz On RT the seqcount_t is required even on UP because the softirq can be preempted. The IRQ handler is threaded so it is also preemptible. 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 387867e00..79d8238f6 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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/wait.h-include-atomic.h.patch b/debian/patches-rt/wait.h-include-atomic.h.patch index 247fad3e2..ccc23df66 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz | CC init/main.o |In file included from include/linux/mmzone.h:9:0, diff --git a/debian/patches-rt/x86-Enable-RT-also-on-32bit.patch b/debian/patches-rt/x86-Enable-RT-also-on-32bit.patch index 0ce5f00a4..f18d2536f 100644 --- a/debian/patches-rt/x86-Enable-RT-also-on-32bit.patch +++ b/debian/patches-rt/x86-Enable-RT-also-on-32bit.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Thu, 7 Nov 2019 17:49:20 +0100 Subject: [PATCH] x86: Enable RT also on 32bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- diff --git a/debian/patches-rt/x86-Enable-RT.patch b/debian/patches-rt/x86-Enable-RT.patch index d7176aa02..340ed346b 100644 --- a/debian/patches-rt/x86-Enable-RT.patch +++ b/debian/patches-rt/x86-Enable-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 7 Aug 2019 18:15:38 +0200 Subject: [PATCH] x86: Allow to enable RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Allow to select RT. 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 6f0d12227..6ac293b90 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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-entry-Use-should_resched-in-idtentry_exit_cond_r.patch b/debian/patches-rt/x86-entry-Use-should_resched-in-idtentry_exit_cond_r.patch index cbed409e1..56cf6fa43 100644 --- a/debian/patches-rt/x86-entry-Use-should_resched-in-idtentry_exit_cond_r.patch +++ b/debian/patches-rt/x86-entry-Use-should_resched-in-idtentry_exit_cond_r.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Tue, 30 Jun 2020 11:45:14 +0200 Subject: [PATCH] x86/entry: Use should_resched() in idtentry_exit_cond_resched() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz The TIF_NEED_RESCHED bit is inlined on x86 into the preemption counter. By using should_resched(0) instead of need_resched() the same check can diff --git a/debian/patches-rt/x86-fpu--Do-not-disable-BH-on-RT.patch b/debian/patches-rt/x86-fpu--Do-not-disable-BH-on-RT.patch index ca7ae94d5..c8cd9af07 100644 --- a/debian/patches-rt/x86-fpu--Do-not-disable-BH-on-RT.patch +++ b/debian/patches-rt/x86-fpu--Do-not-disable-BH-on-RT.patch @@ -1,7 +1,7 @@ Subject: x86/fpu: Do not disable BH on RT From: Thomas Gleixner <tglx@linutronix.de> Date: Mon, 21 Sep 2020 20:15:50 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- 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 39d87dd1d..4a554572c 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz This is a copy from kmap_atomic_prot(). 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 473725772..37647f087 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Non constant TSC is a nightmare on bare metal already, but with virtualization it becomes a complete disaster because the workarounds diff --git a/debian/patches-rt/x86-preempt-lazy.patch b/debian/patches-rt/x86-preempt-lazy.patch index 99e493a79..577ffb22a 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.tar.xz Implement the x86 pieces for lazy preempt. 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 737934bb8..3eac47b02 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/5.9/older/patches-5.9-rt15.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.9/older/patches-5.9-rt16.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 |