linux-kernel - Re: [PATCH sched_ext/for-6.12-fixes] sched_ext: Make cast

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Message-ID: <ZxwZd160pfdBYz2y@slm.duckdns.org>
Date: Fri, 25 Oct 2024 12:19:35 -1000
From: Tejun Heo <tj@...nel.org>
To: David Vernet <void@...ifault.com>
Cc: linux-kernel@...r.kernel.org, kernel-team@...a.com, sched-ext@...a.com
Subject: Re: [PATCH sched_ext/for-6.12-fixes] sched_ext: Make cast_mask()
 inline

On Fri, Oct 25, 2024 at 12:11:14PM -1000, Tejun Heo wrote:
> cast_mask() doesn't do any actual work and is defined in a header file.
> Force it to be inline. When it is not inlined and the function is not used,
> it can cause verificaiton failures like the following:
> 
>   # tools/testing/selftests/sched_ext/runner -t minimal
>   ===== START =====
>   TEST: minimal
>   DESCRIPTION: Verify we can load a fully minimal scheduler
>   OUTPUT:
>   libbpf: prog 'cast_mask': missing BPF prog type, check ELF section name '.text'
>   libbpf: prog 'cast_mask': failed to load: -22
>   libbpf: failed to load object 'minimal'
>   libbpf: failed to load BPF skeleton 'minimal': -22
>   ERR: minimal.c:20
>   Failed to open and load skel
>   not ok 1 minimal #
>   =====  END  =====
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Fixes: a748db0c8c6a ("tools/sched_ext: Receive misc updates from SCX repo")

Applying to sched_ext/for-6.12-fixes.

Thanks.

-- 
tejun