linux-kernel - Re: [PATCH v2 3/3] sched/numa: documentation for per-cgroup numa stat

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Date:   Wed, 27 Nov 2019 13:54:11 +0800
From:   王贇 <yun.wang@...ux.alibaba.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        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>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        Michal Koutný <mkoutny@...e.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>
Subject: Re: [PATCH v2 3/3] sched/numa: documentation for per-cgroup numa stat

Hi, Randy

On 2019/11/27 下午12:58, Randy Dunlap wrote:
> On 11/26/19 5:50 PM, 王贇 wrote:
>> Since v1:
>>   * thanks to Iurii for the better sentence
>>   * thanks to Jonathan for the better format
>>
>> Add the description for 'cg_numa_stat', also a new doc to explain
>> the details on how to deal with the per-cgroup numa statistics.
>>
>> Cc: Peter Zijlstra <peterz@...radead.org>
>> Cc: Michal Koutný <mkoutny@...e.com>
>> Cc: Mel Gorman <mgorman@...e.de>
>> Cc: Jonathan Corbet <corbet@....net>
>> Cc: Iurii Zaikin <yzaikin@...gle.com>
>> Signed-off-by: Michael Wang <yun.wang@...ux.alibaba.com>
> 
> Hi,
> I have a few comments/corrections. Please see below.

Thanks for the comments :-) will apply them all in next version.

> 
>> ---
>>  Documentation/admin-guide/cg-numa-stat.rst      | 163 
[snip]
>> +if you want to have the whole history.
>> +
>> +We have per-task migfailed counter to tell how many page migration has been
> 
> I can't find any occurrence of 'migfailed' in the entire kernel source tree.
> Maybe it is misspelled?

This one is added by the secondary patch:
  [PATCH v2 2/3] sched/numa: expose per-task pages-migration-failure

As suggested by Mel.

Regards,
Michael Wang

> 
>> +failed for a particular task, you will find it in /proc/PID/sched entry.
> 
> 
> HTH.
>