linux-kernel - Re: [PATCH v1] sched: adjust the layout of the cfs

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Message-ID: <xm267btamzvj.fsf@google.com>
Date: Wed, 21 Jan 2026 13:15:12 -0800
From: Benjamin Segall <bsegall@...gle.com>
To: zenghongling <zenghongling@...inos.cn>
Cc: mingo@...hat.com,  juri.lelli@...hat.com,  dietmar.eggemann@....com,
  rostedt@...dmis.org,  mgorman@...e.de,  vschneid@...hat.com,
  linux-kernel@...r.kernel.org,  zhongling0719@....com
Subject: Re: [PATCH v1] sched: adjust the layout of the cfs_bandwith
 structure to  save memory

zenghongling <zenghongling@...inos.cn> writes:

> Using pahole, we can see that there are some padding holes
> in the current cfs_bandwith structure. Adjusting the
> layout of cfs_bandwith can reduce these holes,
> resulting in the size of the structure decreasing
> from 240 bytes to 232 bytes.
> It is possible to make period_timer access one more cache
> line.it is already touching so many cachelines and isn't
> that kind of hot path.

Something more like: "This make make period_timer access one more cache
line, but it is already [...]"

And commits generally have a blank line between paragraphs.

With that,

Reviewed-by: Ben Segall <bsegall@...gle.com>