linux-kernel - Re: [PATCH 00/12] sched: Cleanup the change-pattern and related locking

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Message-ID: <aOTOgazXTC9CCSL2@gpd4>
Date: Tue, 7 Oct 2025 10:25:37 +0200
From: Andrea Righi <arighi@...dia.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: tj@...nel.org, linux-kernel@...r.kernel.org, mingo@...nel.org,
	juri.lelli@...hat.com, vincent.guittot@...aro.org,
	dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
	mgorman@...e.de, vschneid@...hat.com, longman@...hat.com,
	hannes@...xchg.org, mkoutny@...e.com, void@...ifault.com,
	changwoo@...lia.com, cgroups@...r.kernel.org,
	sched-ext@...ts.linux.dev, liuwenfang@...or.com, tglx@...utronix.de
Subject: Re: [PATCH 00/12] sched: Cleanup the change-pattern and related
 locking

Hi Peter,

On Mon, Oct 06, 2025 at 12:44:02PM +0200, Peter Zijlstra wrote:
> 
> Hi,
> 
> There here patches clean up the scheduler 'change' pattern and related locking
> some. They are the less controversial bit of some proposed sched_ext changes
> and stand on their own.
> 
> I would like to queue them into sched/core after the merge window.

They all look sane changes to me. I've also stress-tested this quite a bit,
even with the sched_ext dl_server patch set applied, and everything appears
to work well.

Therefore, from a sched_ext perspective:

Acked-by: Andrea Righi <arighi@...dia.com>

Thanks!
-Andrea

> 
> 
> Also in:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/cleanup
> 
> ---
>  include/linux/cleanup.h  |   5 +
>  include/linux/sched.h    |   4 +-
>  kernel/cgroup/cpuset.c   |   2 +-
>  kernel/kthread.c         |  15 +--
>  kernel/sched/core.c      | 327 ++++++++++++++++++-----------------------------
>  kernel/sched/deadline.c  |  20 +--
>  kernel/sched/ext.c       |  47 +++----
>  kernel/sched/fair.c      |  15 ++-
>  kernel/sched/idle.c      |   9 +-
>  kernel/sched/rt.c        |   7 +-
>  kernel/sched/sched.h     | 198 ++++++++++++++++++++--------
>  kernel/sched/stats.h     |   2 +-
>  kernel/sched/stop_task.c |   9 +-
>  kernel/sched/syscalls.c  |  84 ++++--------
>  14 files changed, 373 insertions(+), 371 deletions(-)
> 
>