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posix-timers: Switch to hrtimer_start_expires_user()

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Switch the arm and rearm callbacks for hrtimer based posix timers over to
hrtimer_start_expires_user() so that already expired timers are not
queued. Hand the result back to the caller, which then queues the signal.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260408114952.266001916@kernel.org
This commit is contained in:
Thomas Gleixner 2026-04-08 13:54:06 +02:00
parent cfb7fe3fdd
commit acc071343d
1 changed files with 6 additions and 5 deletions
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11
kernel/time/posix-timers.c
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@ -293,8 +293,7 @@ static bool common_hrtimer_rearm(struct k_itimer *timr)
struct hrtimer *timer = &timr->it.real.timer;
timr->it_overrun += hrtimer_forward_now(timer, timr->it_interval);
hrtimer_restart(timer);
return true;
return hrtimer_start_expires_user(timer, HRTIMER_MODE_ABS);
}
static bool __posixtimer_deliver_signal(struct kernel_siginfo *info, struct k_itimer *timr)
@ -829,9 +828,11 @@ static bool common_hrtimer_arm(struct k_itimer *timr, ktime_t expires,
expires = ktime_add_safe(expires, hrtimer_cb_get_time(timer));
hrtimer_set_expires(timer, expires);
if (!sigev_none)
hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
return true;
/* For sigev_none pretend that the timer is queued */
if (sigev_none)
return true;
return hrtimer_start_expires_user(timer, HRTIMER_MODE_ABS);
}
static int common_hrtimer_try_to_cancel(struct k_itimer *timr)