diff options
Diffstat (limited to 'debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch')
| -rw-r--r-- | debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch | 20 |
1 files changed, 10 insertions, 10 deletions
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 d8094dafb..f7c279601 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/5.2/older/patches-5.2.17-rt9.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patches-5.4.3-rt1.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. @@ -45,7 +45,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> static inline void irq_work_run(void) { } #endif -+#if defined(CONFIG_IRQ_WORK) && defined(CONFIG_PREEMPT_RT_FULL) ++#if defined(CONFIG_IRQ_WORK) && defined(CONFIG_PREEMPT_RT) +void irq_work_tick_soft(void); +#else +static inline void irq_work_tick_soft(void) { } @@ -67,7 +67,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> static void __irq_work_queue_local(struct irq_work *work) { + struct llist_head *list; -+ bool lazy_work, realtime = IS_ENABLED(CONFIG_PREEMPT_RT_FULL); ++ bool lazy_work, realtime = IS_ENABLED(CONFIG_PREEMPT_RT); + + lazy_work = work->flags & IRQ_WORK_LAZY; + @@ -97,7 +97,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* Arch remote IPI send/receive backend aren't NMI safe */ WARN_ON_ONCE(in_nmi()); - if (llist_add(&work->llnode, &per_cpu(raised_list, cpu))) -+ if (IS_ENABLED(CONFIG_PREEMPT_RT_FULL) && !(work->flags & IRQ_WORK_HARD_IRQ)) ++ if (IS_ENABLED(CONFIG_PREEMPT_RT) && !(work->flags & IRQ_WORK_HARD_IRQ)) + list = &per_cpu(lazy_list, cpu); + else + list = &per_cpu(raised_list, cpu); @@ -122,7 +122,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> struct llist_node *llnode; unsigned long flags; -+#ifndef CONFIG_PREEMPT_RT_FULL ++#ifndef CONFIG_PREEMPT_RT + /* + * nort: On RT IRQ-work may run in SOFTIRQ context. + */ @@ -137,7 +137,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> { irq_work_run_list(this_cpu_ptr(&raised_list)); - irq_work_run_list(this_cpu_ptr(&lazy_list)); -+ if (IS_ENABLED(CONFIG_PREEMPT_RT_FULL)) { ++ if (IS_ENABLED(CONFIG_PREEMPT_RT)) { + /* + * NOTE: we raise softirq via IPI for safety, + * and execute in irq_work_tick() to move the @@ -155,11 +155,11 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> if (!llist_empty(raised) && !arch_irq_work_has_interrupt()) irq_work_run_list(raised); + -+ if (!IS_ENABLED(CONFIG_PREEMPT_RT_FULL)) ++ if (!IS_ENABLED(CONFIG_PREEMPT_RT)) + irq_work_run_list(this_cpu_ptr(&lazy_list)); +} + -+#if defined(CONFIG_IRQ_WORK) && defined(CONFIG_PREEMPT_RT_FULL) ++#if defined(CONFIG_IRQ_WORK) && defined(CONFIG_PREEMPT_RT) +void irq_work_tick_soft(void) +{ irq_work_run_list(this_cpu_ptr(&lazy_list)); @@ -170,7 +170,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * Synchronize against the irq_work @entry, ensures the entry is not --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c -@@ -1076,6 +1076,7 @@ static int rcu_implicit_dynticks_qs(stru +@@ -1096,6 +1096,7 @@ static int rcu_implicit_dynticks_qs(stru !rdp->rcu_iw_pending && rdp->rcu_iw_gp_seq != rnp->gp_seq && (rnp->ffmask & rdp->grpmask)) { init_irq_work(&rdp->rcu_iw, rcu_iw_handler); @@ -200,7 +200,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> /* --- a/kernel/time/timer.c +++ b/kernel/time/timer.c -@@ -1727,6 +1727,8 @@ static __latent_entropy void run_timer_s +@@ -1783,6 +1783,8 @@ static __latent_entropy void run_timer_s { struct timer_base *base = this_cpu_ptr(&timer_bases[BASE_STD]); |