From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH v3 2/2] sched: add throttled time stat for throttled
 children
Date: Wed, 21 Jun 2023 11:23:17 -1000
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References: <20230620183247.737942-1-joshdon@google.com>
 <20230620183247.737942-2-joshdon@google.com>
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To: Josh Don <joshdon-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Zefan Li <lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Juri Lelli <juri.lelli-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Vincent Guittot <vincent.guittot-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Dietmar Eggemann <dietmar.eggemann-5wv7dgnIgG8@public.gmane.org>, Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>, Ben Segall <bsegall-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Mel Gorman <mgorman-l3A5Bk7waGM@public.gmane.org>, Daniel Bristot de Oliveira <bristot-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Valentin Schneider <vschneid-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, mkoutny-IBi9RG/b67k@public.gmane.org

On Tue, Jun 20, 2023 at 11:32:47AM -0700, Josh Don wrote:
> We currently export the total throttled time for cgroups that are given
> a bandwidth limit. This patch extends this accounting to also account
> the total time that each children cgroup has been throttled.
> 
> This is useful to understand the degree to which children have been
> affected by the throttling control. Children which are not runnable
> during the entire throttled period, for example, will not show any
> self-throttling time during this period.
> 
> Expose this in a new interface, 'cpu.stat.local', which is similar to
> how non-hierarchical events are accounted in 'memory.events.local'.
> 
> Signed-off-by: Josh Don <joshdon-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>

Acked-by: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>

Thanks.

-- 
tejun