linux-kernel - Re: [PATCH 4/7] sched_ext: Add an event, SCX_EVENT_ENQ_LOCAL

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Message-ID: <Z4m1BNoBop9H_AFx@slm.duckdns.org>
Date: Thu, 16 Jan 2025 15:40:20 -1000
From: Tejun Heo <tj@...nel.org>
To: Changwoo Min <changwoo@...lia.com>
Cc: void@...ifault.com, arighi@...dia.com, kernel-dev@...lia.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/7] sched_ext: Add an event, SCX_EVENT_ENQ_LOCAL_EXITING

On Fri, Jan 17, 2025 at 12:15:40AM +0900, Changwoo Min wrote:
> Add a core event, SCX_EVENT_ENQ_LOCAL_EXITING, which represents how many
> times a task is enqueued to a local DSQ when exiting if SCX_OPS_ENQ_EXITING
> is not set.
> 
> Signed-off-by: Changwoo Min <changwoo@...lia.com>
> ---
>  kernel/sched/ext.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
> index 909f12a41934..094e19f5fb78 100644
> --- a/kernel/sched/ext.c
> +++ b/kernel/sched/ext.c
> @@ -1479,6 +1479,12 @@ struct scx_event_stat {
>  	 * continued to run because there were no other tasks on the CPU.
>  	 */
>  	u64		CNTD_RUN_WO_ENQ;
> +
> +	/*
> +	 * If SCX_OPS_ENQ_EXITING is not set, the number of times that a task
> +	 * is dispatched to a local DSQ when exiting.
> +	 */
> +	u64		ENQ_LOCAL_EXITING;

ENQ_SKIP_EXITING?

-- 
tejun