Commit 67932f69 authored by Andrea Righi's avatar Andrea Righi Committed by Tejun Heo
Browse files

sched_ext: Update comments replacing breather with aborting mechanism 



Commit 5ebec443 ("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: default avatarAndrea Righi <arighi@nvidia.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 95d1df61

kernel/sched/ext.c

+4 −4
Original line number Diff line number Diff line
@@ -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;