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| author | Andrea Righi <arighi@nvidia.com> | 2025-11-12 18:29:45 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2025-11-12 08:54:44 -1000 |
| commit | 67932f691895294a95861571b0ca69a38e0a4894 (patch) | |
| tree | 6ea7e042ee95703c2143dd1a8caec139af6ffbdb | |
| parent | 95d1df610cdc7497510cc710435a5c8c4e3db606 (diff) | |
sched_ext: Update comments replacing breather with aborting mechanism
Commit 5ebec443fb96a ("sched_ext: Exit dispatch and move operations
immediately when aborting") replaced the breather mechanism with the
scx_aborting flag.
Update comments removing references to the breather mechanism to avoid
confusion.
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | kernel/sched/ext.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index c900667b25b8..8a3b8f64a06b 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -3732,7 +3732,7 @@ bool scx_rcu_cpu_stall(void) * live-lock the system by making many CPUs target the same DSQ to the point * where soft-lockup detection triggers. This function is called from * soft-lockup watchdog when the triggering point is close and tries to unjam - * the system by enabling the breather and aborting the BPF scheduler. + * the system and aborting the BPF scheduler. */ void scx_softlockup(u32 dur_s) { @@ -4315,9 +4315,9 @@ static bool scx_claim_exit(struct scx_sched *sch, enum scx_exit_kind kind) return false; /* - * Some CPUs may be trapped in the dispatch paths. Enable breather - * immediately; otherwise, we might not even be able to get to - * scx_bypass(). + * Some CPUs may be trapped in the dispatch paths. Set the aborting + * flag to break potential live-lock scenarios, ensuring we can + * successfully reach scx_bypass(). */ WRITE_ONCE(scx_aborting, true); return true; |