posix-cpu-timers: Simplify posix_cpu_timer_set()

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Avoid the late sighand lock/unlock dance when a timer is not armed to
enforce reevaluation of the timer base so that the process wide CPU timer
sampling can be disabled.

Do it right at the point where the arming decision is made which already
has sighand locked.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

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Thomas Gleixner 2024-06-10 18:42:25 +02:00 • committed by Frederic Weisbecker

parent 286bfaccea

commit c20b99e324

1 changed files with 17 additions and 27 deletions

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kernel/time/posix-cpu-timers.c

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