linux-kernel - Re: [PATCH v3] sched/stats: Fix rt/dl task's sched latency statistics error in sched_stat_wait trace

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Date: Wed, 10 Jan 2024 12:27:26 +0000
From: Junwen Wu <wudaemon@....com>
To: bristot@...hat.com
Cc: bsegall@...gle.com,
	dietmar.eggemann@....com,
	juri.lelli@...hat.com,
	laoar.shao@...il.com,
	linux-kernel@...r.kernel.org,
	mgorman@...e.de,
	mingo@...hat.com,
	peterz@...radead.org,
	rostedt@...dmis.org,
	vincent.guittot@...aro.org,
	vschneid@...hat.com,
	wudaemon@....com
Subject: Re: [PATCH v3] sched/stats: Fix rt/dl task's sched latency statistics error in sched_stat_wait trace_point

>This error happens when the rt task balances off the source CPU because
>the dequeue operation is not updating the sched_statistics. So, follow
>update_stats_wait_end_fair() and update the stats. Do the same for
>SCHED_DEADLINE.

>[ feel free to change ]

ok


>> +	/*
>> +	 * Mark the end of the wait period
>> +	 * if dequeueing a waiting task.
>> +	 */
>make this a single line comment.
ok
--
Best regards