diff options
Diffstat (limited to 'debian/patches-rt/softirq-Use-a-dedicated-thread-for-timer-wakeups.patch')
| -rw-r--r-- | debian/patches-rt/softirq-Use-a-dedicated-thread-for-timer-wakeups.patch | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/debian/patches-rt/softirq-Use-a-dedicated-thread-for-timer-wakeups.patch b/debian/patches-rt/softirq-Use-a-dedicated-thread-for-timer-wakeups.patch index a5f1a10093..fdfc59c52e 100644 --- a/debian/patches-rt/softirq-Use-a-dedicated-thread-for-timer-wakeups.patch +++ b/debian/patches-rt/softirq-Use-a-dedicated-thread-for-timer-wakeups.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Wed, 1 Dec 2021 17:41:09 +0100 Subject: [PATCH] softirq: Use a dedicated thread for timer wakeups. -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.8/older/patches-6.8.2-rt11.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.9/older/patches-6.9-rt5.tar.xz A timer/hrtimer softirq is raised in-IRQ context. With threaded interrupts enabled or on PREEMPT_RT this leads to waking the ksoftirqd @@ -46,7 +46,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h -@@ -609,6 +609,22 @@ extern void __raise_softirq_irqoff(unsig +@@ -612,6 +612,22 @@ extern void __raise_softirq_irqoff(unsig extern void raise_softirq_irqoff(unsigned int nr); extern void raise_softirq(unsigned int nr); @@ -71,7 +71,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> static inline struct task_struct *this_cpu_ksoftirqd(void) --- a/kernel/softirq.c +++ b/kernel/softirq.c -@@ -619,6 +619,29 @@ static inline void tick_irq_exit(void) +@@ -624,6 +624,29 @@ static inline void tick_irq_exit(void) #endif } @@ -101,7 +101,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> static inline void __irq_exit_rcu(void) { #ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED -@@ -628,8 +651,13 @@ static inline void __irq_exit_rcu(void) +@@ -633,8 +656,13 @@ static inline void __irq_exit_rcu(void) #endif account_hardirq_exit(current); preempt_count_sub(HARDIRQ_OFFSET); @@ -117,7 +117,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> tick_irq_exit(); } -@@ -963,12 +991,70 @@ static struct smp_hotplug_thread softirq +@@ -972,12 +1000,70 @@ static struct smp_hotplug_thread softirq .thread_comm = "ksoftirqd/%u", }; @@ -191,7 +191,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> early_initcall(spawn_ksoftirqd); --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c -@@ -1809,7 +1809,7 @@ void hrtimer_interrupt(struct clock_even +@@ -1812,7 +1812,7 @@ void hrtimer_interrupt(struct clock_even if (!ktime_before(now, cpu_base->softirq_expires_next)) { cpu_base->softirq_expires_next = KTIME_MAX; cpu_base->softirq_activated = 1; @@ -200,7 +200,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> } __hrtimer_run_queues(cpu_base, now, flags, HRTIMER_ACTIVE_HARD); -@@ -1922,7 +1922,7 @@ void hrtimer_run_queues(void) +@@ -1925,7 +1925,7 @@ void hrtimer_run_queues(void) if (!ktime_before(now, cpu_base->softirq_expires_next)) { cpu_base->softirq_expires_next = KTIME_MAX; cpu_base->softirq_activated = 1; @@ -211,12 +211,12 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> __hrtimer_run_queues(cpu_base, now, flags, HRTIMER_ACTIVE_HARD); --- a/kernel/time/timer.c +++ b/kernel/time/timer.c -@@ -2070,7 +2070,7 @@ static void run_local_timers(void) - if (time_before(jiffies, base->next_expiry)) +@@ -2466,7 +2466,7 @@ static void run_local_timers(void) + /* Raise the softirq only if required. */ + if (time_after_eq(jiffies, base->next_expiry) || + (i == BASE_DEF && tmigr_requires_handle_remote())) { +- raise_softirq(TIMER_SOFTIRQ); ++ raise_timer_softirq(); return; + } } -- raise_softirq(TIMER_SOFTIRQ); -+ raise_timer_softirq(); - } - - /* |