Re: [PATCH 3/7] sched_ext: Add an event, SCX_EVENT_CNTD_RUN_WO_ENQ

[Changwoo Min]

Hello,

On 25. 1. 17. 10:39, Tejun Heo wrote:
> On Fri, Jan 17, 2025 at 12:15:39AM +0900, Changwoo Min wrote:
> > Add a core event, SCX_EVENT_CNTD_RUN_WO_ENQ, which represents how many
> > times a task is continued to run without ops.enqueue() when SCX_OPS_ENQ_LAST
> > is not set.
> >
> > Signed-off-by: Changwoo Min <changwoo@xxxxxxxxxx>
> > ---
> >   kernel/sched/ext.c | 9 +++++++++
> >   1 file changed, 9 insertions(+)
> >
> > diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
> > index 8054e4e5ed0c..909f12a41934 100644
> > --- a/kernel/sched/ext.c
> > +++ b/kernel/sched/ext.c
> > @@ -1473,6 +1473,12 @@ struct scx_event_stat {
> >   	 * the meantime. In this case, the task is bounced to the global DSQ.
> >   	 */
> >   	u64		OFFLINE_LOCAL_DSQ;
> > +
> > +	/*
> > +	 * If SCX_OPS_ENQ_LAST is not set, the number of times that a task
> > +	 * continued to run because there were no other tasks on the CPU.
> > +	 */
> > +	u64		CNTD_RUN_WO_ENQ;
>
> DISPATCH_KEEP_LAST?

That's good.

Regards,
Changwoo Min