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sched_ext: Update comments replacing breather with aborting mechanism

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Commit 5ebec443fb ("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>
This commit is contained in:
Andrea Righi 2025-11-12 18:29:45 +01:00 committed by Tejun Heo
parent 95d1df610c
commit 67932f6918
1 changed files with 4 additions and 4 deletions
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8
kernel/sched/ext.c
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@ -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;