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From: Tejun Heo <tj@kernel.org>
To: Andrey Ryabinin <arbn@yandex-team.com>
Cc: Zefan Li <lizefan.x@bytedance.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Daniel Jordan <daniel.m.jordan@oracle.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Daniel Bristot de Oliveira <bristot@redhat.com>,
	cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
	bharata@linux.vnet.ibm.com, boris@bur.io, stable@vger.kernel.org
Subject: Re: [PATCH v2 1/5] cputime, cpuacct: Include guest time in user time in cpuacct.stat
Date: Tue, 7 Sep 2021 07:19:05 -1000	[thread overview]
Message-ID: <YTefCTq1KyRxYlxr@slm.duckdns.org> (raw)
In-Reply-To: <20210820094005.20596-1-arbn@yandex-team.com>

On Fri, Aug 20, 2021 at 12:40:01PM +0300, Andrey Ryabinin wrote:
> cpuacct.stat in no-root cgroups shows user time without guest time
> included int it. This doesn't match with user time shown in root
> cpuacct.stat and /proc/<pid>/stat. This also affects cgroup2's cpu.stat
> in the same way.
> 
> Make account_guest_time() to add user time to cgroup's cpustat to
> fix this.
> 
> Fixes: ef12fefabf94 ("cpuacct: add per-cgroup utime/stime statistics")
> Signed-off-by: Andrey Ryabinin <arbn@yandex-team.com>
> Cc: <stable@vger.kernel.org>

The fact that this has been broken for so long, prolly from the beginning,
gives me some pause but the patches looks fine to me.

For the series,

Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

-- 
tejun

      parent reply	other threads:[~2021-09-07 17:19 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-17 12:00 [PATCH 1/4] cputime,cpuacct: " Andrey Ryabinin
2021-02-17 12:00 ` [PATCH 2/4] cgroup: Fix 'usage_usec' time in root's cpu.stat Andrey Ryabinin
2021-03-17 22:13   ` Daniel Jordan
2021-02-17 12:00 ` [PATCH 3/4] sched/cpuacct: fix user/system in shown cpuacct.usage* Andrey Ryabinin
2021-03-17 22:22   ` Daniel Jordan
2021-08-20  9:37     ` Andrey Ryabinin
2021-02-17 12:00 ` [PATCH 4/4] sched/cpuacct: Make user/system times in cpuacct.stat more precise Andrey Ryabinin
2021-03-17 22:25   ` Daniel Jordan
2021-03-17 22:09 ` [PATCH 1/4] cputime,cpuacct: Include guest time in user time in cpuacct.stat Daniel Jordan
2021-08-20  9:37   ` Andrey Ryabinin
2021-08-20  9:40 ` [PATCH v2 1/5] cputime, cpuacct: " Andrey Ryabinin
2021-08-20  9:40   ` [PATCH v2 2/5] cpuacct: convert BUG_ON() to WARN_ON_ONCE() Andrey Ryabinin
2021-08-20  9:40   ` [PATCH v2 3/5] cgroup: Fix 'usage_usec' time in root's cpu.stat Andrey Ryabinin
2021-08-20  9:40   ` [PATCH v2 4/5] sched/cpuacct: fix user/system in shown cpuacct.usage* Andrey Ryabinin
2021-09-10 19:03     ` Daniel Jordan
2021-08-20  9:40   ` [PATCH v2 5/5] sched/cpuacct: Make user/system times in cpuacct.stat more precise Andrey Ryabinin
2021-09-07 17:19   ` Tejun Heo [this message]

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