linux-kernel - Re: [PATCHSET sched_ext/scx-misc-a] sched_ext: Add @sch parameter in preparation for multi-sched support

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Message-ID: <aNLxSYPSX5pteEPZ@slm.duckdns.org>
Date: Tue, 23 Sep 2025 09:13:13 -1000
From: Tejun Heo <tj@...nel.org>
To: void@...ifault.com, arighi@...dia.com, changwoo@...lia.com
Cc: linux-kernel@...r.kernel.org, sched-ext@...ts.linux.dev
Subject: Re: [PATCHSET sched_ext/scx-misc-a] sched_ext: Add @sch parameter in
 preparation for multi-sched support

On Mon, Sep 22, 2025 at 06:14:29AM -1000, Tejun Heo wrote:
> This patchset systematically adds the @sch parameter to various sched_ext
> functions in preparation for multiple scheduler support. This part is
> needed regardless of how the rest of the multiple scheduler patchset
> develops. The changes also remove a bunch of naked scx_root dereferences
> that trigger sparse warnings. The changes are mostly mechanical parameter
> additions without functional changes.
> 
> The patches are based on sched_ext/for-6.18 (ac6772e8bcda) +
> "sched_ext: misc cleanups and improvements"
> (http://lkml.kernel.org/r/20250922013246.275031-1-tj@kernel.org).
> 
>  1 sched_ext: Separate out scx_kick_cpu() and add @sch to it
>  2 sched_ext: Add the @sch parameter to __bstr_format()
>  3 sched_ext: Add the @sch parameter to ext_idle helpers
>  4 sched_ext: Drop kf_cpu_valid()
>  5 sched_ext: Add the @sch parameter to scx_dsq_insert_preamble/commit()
>  6 sched_ext: Drop scx_kf_exit() and scx_kf_error()
>  7 sched_ext: Misc updates around scx_sched instance pointer

Applied to sched_ext/for-6.18.

Thanks.

-- 
tejun