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Code Issues Releases Wiki Activity

tick: Move tick cancellation up to CPUHP_AP_TICK_DYING 

The tick hrtimer is cancelled right before hrtimers are migrated. This
is done from the hrtimer subsystem even though it shouldn't know about
its actual users.

Move instead the tick hrtimer cancellation to the relevant CPU hotplug
state that aims at centralizing high level tick shutdown operations so
that the related flow is easy to follow.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240225225508.11587-9-frederic@kernel.org
This commit is contained in:
Frederic Weisbecker 2024-02-25 23:55:00 +01:00 committed by Thomas Gleixner
parent 3ad6eb0683
commit f04e51220a
2 changed files with 2 additions and 2 deletions
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2
kernel/time/hrtimer.c
View File

@ -2229,8 +2229,6 @@ int hrtimers_cpu_dying(unsigned int dying_cpu)
int i, ncpu = cpumask_any_and(cpu_active_mask, housekeeping_cpumask(HK_TYPE_TIMER));
struct hrtimer_cpu_base *old_base, *new_base;
tick_cancel_sched_timer(dying_cpu);
old_base = this_cpu_ptr(&hrtimer_bases);
new_base = &per_cpu(hrtimer_bases, ncpu);

2
kernel/time/tick-common.c
View File

@ -410,6 +410,8 @@ int tick_cpu_dying(unsigned int dying_cpu)
if (tick_do_timer_cpu == dying_cpu)
tick_do_timer_cpu = cpumask_first(cpu_online_mask);
tick_cancel_sched_timer(dying_cpu);
return 0;
}