Re: [PATCH 3/7] sched_ext: Add an event, SCX_EVENT_CNTD_RUN_WO_ENQ
From: Tejun Heo
Date: Thu Jan 16 2025 - 20:39:24 EST
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?
--
tejun