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From: Tejun Heo <tj@kernel.org>
To: David Carlier <devnexen@gmail.com>
Cc: sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org,
	changwoo@igalia.com
Subject: Re: [PATCH] tools/sched_ext: Extend the prolog migration probe to cid-form schedulers
Date: Mon, 31 Aug 2026 11:52:39 -1000	[thread overview]
Message-ID: <d6cfdbdd795ef5b4c546fa8eddc6ad23@kernel.org> (raw)
In-Reply-To: <20260829122035.58018-1-devnexen@gmail.com>

Hello,

On Sat, Aug 29, 2026 at 01:20:35PM +0100, David Carlier wrote:
> scx_lib_init_probe hooks bpf_scx_reg(), which is where a cpu-form
> scheduler enters the kernel when its struct_ops link is created. A
> cid-form scheduler comes in elsewhere: bpf_sched_ext_ops_cid points .reg
> at bpf_scx_reg_cid(), a separate function, so the probe never fires and
> the flag it is meant to set keeps whatever it was compiled with.

Let's keep the updates flowing through the scx repo - the kernel copies
are synced from it periodically. Can you apply the changes there? Note
that the default flip already landed there as 888a907d84b5 ("common.bpf.h:
default __scx_prolog_disables_migration to false").

Thanks.

--
tejun

      reply	other threads:[~2026-08-31 21:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-29 12:20 [PATCH] tools/sched_ext: Extend the prolog migration probe to cid-form schedulers David Carlier
2026-08-31 21:52 ` Tejun Heo [this message]

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