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| author | Thomas Gleixner <tglx@kernel.org> | 2026-02-24 17:37:14 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-02-27 16:40:10 +0100 |
| commit | 8ffc9ea88136903812448a04127e1ee2c0460f24 (patch) | |
| tree | 9f1680b11119eb557c361a0b7fc37cbbd4c45f6a /kernel/time/hrtimer.c | |
| parent | 0c6af0ea51bd2774f41a00a81ac276800975c3cc (diff) | |
| download | linux-next-8ffc9ea88136903812448a04127e1ee2c0460f24.tar.gz linux-next-8ffc9ea88136903812448a04127e1ee2c0460f24.zip | |
hrtimer: Evaluate timer expiry only once
No point in accessing the timer twice.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260224163430.409352042@kernel.org
Diffstat (limited to 'kernel/time/hrtimer.c')
| -rw-r--r-- | kernel/time/hrtimer.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 0448ba9a4ab6..e6f02e980371 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -810,10 +810,11 @@ static void hrtimer_reprogram(struct hrtimer *timer, bool reprogram) { struct hrtimer_cpu_base *cpu_base = this_cpu_ptr(&hrtimer_bases); struct hrtimer_clock_base *base = timer->base; - ktime_t expires = ktime_sub(hrtimer_get_expires(timer), base->offset); + ktime_t expires = hrtimer_get_expires(timer); - WARN_ON_ONCE(hrtimer_get_expires(timer) < 0); + WARN_ON_ONCE(expires < 0); + expires = ktime_sub(expires, base->offset); /* * CLOCK_REALTIME timer might be requested with an absolute * expiry time which is less than base->offset. Set it to 0. |