diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2024-02-25 23:55:02 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-02-26 11:37:32 +0100 |
| commit | d9b1865c86aec7c515db5718e4820106c2c12db3 (patch) | |
| tree | e5c05ebdbbad4b394c1217b9d5ac1a053e5b460a /kernel/time | |
| parent | ef8969bb552c1c75e997a42d3e2c576b6ed4025a (diff) | |
| download | linux-d9b1865c86aec7c515db5718e4820106c2c12db3.tar.gz linux-d9b1865c86aec7c515db5718e4820106c2c12db3.tar.bz2 linux-d9b1865c86aec7c515db5718e4820106c2c12db3.zip | |
tick: Assume the tick can't be stopped in NOHZ_MODE_INACTIVE mode
The full-nohz update function checks if the nohz mode is active before
proceeding. It considers one exception though: if the tick is already
stopped even though the nohz mode is inactive, it still moves on in
order to update/restart the tick if needed.
However in order for the tick to be stopped, the nohz_mode has to be
either NOHZ_MODE_LOWRES or NOHZ_MODE_HIGHRES. Therefore it doesn't make
sense to test if the tick is stopped before verifying NOHZ_MODE_INACTIVE
mode.
Remove the needless related condition.
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/20240225225508.11587-11-frederic@kernel.org
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index b17895de26b9..b79f5403433b 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -1086,7 +1086,7 @@ static void tick_nohz_full_update_tick(struct tick_sched *ts) if (!tick_nohz_full_cpu(smp_processor_id())) return; - if (!ts->tick_stopped && ts->nohz_mode == NOHZ_MODE_INACTIVE) + if (ts->nohz_mode == NOHZ_MODE_INACTIVE) return; __tick_nohz_full_update_tick(ts, ktime_get()); |