diff options
| author | Tejun Heo <tj@kernel.org> | 2026-04-10 10:19:22 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-04-10 16:38:25 -1000 |
| commit | 49d78adf9555bbc02ccb65a28325e3e57e9c52ed (patch) | |
| tree | c17b8b40e233db7eee83ff4dbde2556bebca7229 /kernel/sched | |
| parent | e719e17d99aaf3922dbc15ae3ac3bb62fac32bad (diff) | |
sched_ext: Drop spurious warning on kick during scheduler disable
kick_cpus_irq_workfn() warns when scx_kick_syncs is NULL, but this can
legitimately happen when a BPF timer or other kick source races with
free_kick_syncs() during scheduler disable. Drop the pr_warn_once() and
add a comment explaining the race.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Zhao Mengmeng <zhaomengmeng@kylinos.cn>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/ext.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index b8dbae251fd5..012ca8bd70fb 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -7600,10 +7600,9 @@ static void kick_cpus_irq_workfn(struct irq_work *irq_work) unsigned long *ksyncs; s32 cpu; - if (unlikely(!ksyncs_pcpu)) { - pr_warn_once("kick_cpus_irq_workfn() called with NULL scx_kick_syncs"); + /* can race with free_kick_syncs() during scheduler disable */ + if (unlikely(!ksyncs_pcpu)) return; - } ksyncs = rcu_dereference_bh(ksyncs_pcpu)->syncs; |