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| author | Yunfeng Ye <yeyunfeng@huawei.com> | 2021-05-13 02:29:18 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-05-13 15:21:21 +0300 |
| commit | 96c9b90396f9ab6caf13b4ebf00095818ac53b7f (patch) | |
| tree | 19d3ea6ab24929a65e48030c9a5ac391a237c85d /Documentation | |
| parent | 3f624314b3f7c580aa5844a8930befd71e2a287c (diff) | |
| download | linux-96c9b90396f9ab6caf13b4ebf00095818ac53b7f.tar.xz | |
tick/nohz: Update idle_exittime on actual idle exit
The idle_exittime field of tick_sched is used to record the time when
the idle state was left. but currently the idle_exittime is updated in
the function tick_nohz_restart_sched_tick(), which is not always in idle
state when nohz_full is configured:
tick_irq_exit
tick_nohz_irq_exit
tick_nohz_full_update_tick
tick_nohz_restart_sched_tick
ts->idle_exittime = now;
It's thus overwritten by mistake on nohz_full tick restart. Move the
update to the appropriate idle exit path instead.
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210512232924.150322-5-frederic@kernel.org
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions