linux-kernel - Re: [PATCH 2/2] sched: Split the function show

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Date:   Fri, 4 Dec 2020 09:40:21 +0000
From:   Mel Gorman <mgorman@...e.de>
To:     Yunfeng Ye <yeyunfeng@...wei.com>
Cc:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, bristot@...hat.com,
        linux-kernel@...r.kernel.org, Shiyuan Hu <hushiyuan@...wei.com>,
        Hewenliang <hewenliang4@...wei.com>
Subject: Re: [PATCH 2/2] sched: Split the function show_schedstat()

On Fri, Dec 04, 2020 at 09:22:34AM +0800, Yunfeng Ye wrote:
> 
> 
> On 2020/12/3 17:42, Mel Gorman wrote:
> > On Thu, Dec 03, 2020 at 02:47:14PM +0800, Yunfeng Ye wrote:
> >> The schedstat include runqueue-specific stats and domain-specific stats,
> >> so split it into two functions, show_rqstat() and show_domainstat().
> >>
> >> No functional changes.
> >>
> >> Signed-off-by: Yunfeng Ye <yeyunfeng@...wei.com>
> > 
> > Why?
> > 
> > I could understand if there was a follow-up patch that adjusted some
> > subset or there was a difference in checking for schedstat_enabled,
> > locking or inserting new schedstat information. This can happen in the
> > general case when the end result is easier to review here it seems to be
> > just moving code around.
> > 
> The rqstat and domainstat is independent state information. so I think
> split it into two individual function is clearer.
> 

The comments and the names of the structures being accessesd is sufficient
to make it clear.

-- 
Mel Gorman
SUSE Labs