linux-kernel - Re: [PATCH v2 0/3] Fix and cleanup and extend cpu.stat

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Message-ID: <bb16ae49-f591-4ab3-8d27-f649619b266b@bytedance.com>
Date: Mon, 3 Feb 2025 16:11:27 +0800
From: Abel Wu <wuyun.abel@...edance.com>
To: Tejun Heo <tj@...nel.org>, Johannes Weiner <hannes@...xchg.org>,
 Michal Koutný <mkoutny@...e.com>,
 Jonathan Corbet <corbet@....net>, Ingo Molnar <mingo@...hat.com>,
 Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>,
 Vincent Guittot <vincent.guittot@...aro.org>,
 Dietmar Eggemann <dietmar.eggemann@....com>,
 Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>,
 Mel Gorman <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>,
 Andrew Morton <akpm@...ux-foundation.org>, Yury Norov
 <yury.norov@...il.com>, Thomas Gleixner <tglx@...utronix.de>,
 Bitao Hu <yaoma@...ux.alibaba.com>, Chen Ridong <chenridong@...wei.com>
Cc: "open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>,
 "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/3] Fix and cleanup and extend cpu.stat

Ping :)

On 1/25/25 1:25 PM, Abel Wu Wrote:
> Patch 1: fixes an issue that forceidle time can be inconsistant with
> other cputimes.
> 
> Patch 2: cleans up the #ifdef mess in cpu.stat.
> 
> Patch 3: extend run_delay accounting to cgroup to show how severely
> a cgroup is stalled.
> 
> v2:
>   - Fix internal function naming. (Michal Koutny)
> 
> Abel Wu (3):
>    cgroup/rstat: Fix forceidle time in cpu.stat
>    cgroup/rstat: Cleanup cpu.stat once for all
>    cgroup/rstat: Add run_delay accounting for cgroups
> 
>   Documentation/admin-guide/cgroup-v2.rst |  1 +
>   include/linux/cgroup-defs.h             |  3 +
>   include/linux/kernel_stat.h             | 14 +++++
>   kernel/cgroup/rstat.c                   | 75 ++++++++++++++++---------
>   kernel/sched/cputime.c                  | 12 ++++
>   kernel/sched/stats.h                    |  2 +
>   6 files changed, 79 insertions(+), 28 deletions(-)
>