linux-kernel - Re: [PATCH] selftests/sched_ext: Fix exit selftest hang on UP

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Message-ID: <aGazlC01Agx68E5_@slm.duckdns.org>
Date: Thu, 3 Jul 2025 06:45:08 -1000
From: Tejun Heo <tj@...nel.org>
To: Andrea Righi <arighi@...dia.com>
Cc: David Vernet <void@...ifault.com>, Changwoo Min <changwoo@...lia.com>,
	Phil Auld <pauld@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/sched_ext: Fix exit selftest hang on UP

On Tue, Jul 01, 2025 at 08:08:45AM +0200, Andrea Righi wrote:
> On single-CPU systems, ops.select_cpu() is never called, causing the
> EXIT_SELECT_CPU test case to wait indefinitely.
> 
> Avoid the stall by skipping this specific sub-test when only one CPU is
> available.
> 
> Reported-by: Phil Auld <pauld@...hat.com>
> Fixes: a5db7817af780 ("sched_ext: Add selftests")
> Signed-off-by: Andrea Righi <arighi@...dia.com>

Applied to sched_ext/for-6.16-fixes.

Thanks.

-- 
tejun