linux-kernel - Re: [PATCH v4 0/3] sched: make migrate_enable/migrate

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Message-ID: <CAADnVQJ5jR-koHsxdsizg_YqtDuhLzrKZzNJ=KNP8ZOYp0=ayw@mail.gmail.com>
Date: Mon, 15 Sep 2025 09:10:20 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Menglong Dong <menglong.dong@...ux.dev>
Cc: Peter Zijlstra <peterz@...radead.org>, Alexei Starovoitov <ast@...nel.org>, Ingo Molnar <mingo@...hat.com>, 
	Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, 
	Benjamin Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Valentin Schneider <vschneid@...hat.com>, Daniel Borkmann <daniel@...earbox.net>, 
	John Fastabend <john.fastabend@...il.com>, Andrii Nakryiko <andrii@...nel.org>, 
	Martin KaFai Lau <martin.lau@...ux.dev>, Eduard <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
	Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
	tzimmermann@...e.de, simona.vetter@...ll.ch, 
	Jani Nikula <jani.nikula@...el.com>, LKML <linux-kernel@...r.kernel.org>, 
	bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH v4 0/3] sched: make migrate_enable/migrate_disable inline

On Sun, Sep 14, 2025 at 6:50 PM Menglong Dong <menglong.dong@...ux.dev> wrote:
>
> On 2025/8/28 14:03 Menglong Dong <menglong.dong@...ux.dev> write:
> > In this series, we make migrate_enable/migrate_disable inline to obtain
> > better performance in some case.
> >
> > In the first patch, we add the macro "COMPILE_OFFSETS" to all the
> > asm-offset.c to avoid circular dependency in the 2nd patch.
> >
> > In the 2nd patch, we generate the offset of nr_pinned in "struct rq" with
> > rq-offsets.c, as the "struct rq" is defined internally and we need to
> > access the "nr_pinned" field in migrate_enable and migrate_disable. Then,
> > we move the definition of migrate_enable/migrate_disable from
> > kernel/sched/core.c to include/linux/sched.h.
> >
> > In the 3rd patch, we fix some typos in include/linux/preempt.h.
>
> Hi, everyone. Do we have any thoughts on this series?

Pls fix build errors and repost.