linux-kernel - Re: [PATCH] sched_ext: define missing cfi stubs for sched

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Message-ID: <ZruuLRv2h6RYWAFb@slm.duckdns.org>
Date: Tue, 13 Aug 2024 09:04:13 -1000
From: Tejun Heo <tj@...nel.org>
To: Manu Bretelle <chantr4@...il.com>
Cc: void@...ifault.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched_ext: define missing cfi stubs for sched_ext

On Tue, Aug 13, 2024 at 11:56:25AM -0700, Manu Bretelle wrote:
> `__bpf_ops_sched_ext_ops` was missing the initialization of some struct
> attributes.
> With
> https://lore.kernel.org/all/20240722183049.2254692-4-martin.lau@linux.dev/
> every single attributes need to be initialized programs (like scx_layered)
> will fail to load.
> 
>   05:26:48 [INFO] libbpf: struct_ops layered: member cgroup_init not found in kernel, skipping it as it's set to zero
>   05:26:48 [INFO] libbpf: struct_ops layered: member cgroup_exit not found in kernel, skipping it as it's set to zero
>   05:26:48 [INFO] libbpf: struct_ops layered: member cgroup_prep_move not found in kernel, skipping it as it's set to zero
>   05:26:48 [INFO] libbpf: struct_ops layered: member cgroup_move not found in kernel, skipping it as it's set to zero
>   05:26:48 [INFO] libbpf: struct_ops layered: member cgroup_cancel_move not found in kernel, skipping it as it's set to zero
>   05:26:48 [INFO] libbpf: struct_ops layered: member cgroup_set_weight not found in kernel, skipping it as it's set to zero
>   05:26:48 [WARN] libbpf: prog 'layered_dump': BPF program load failed: unknown error (-524)
>   05:26:48 [WARN] libbpf: prog 'layered_dump': -- BEGIN PROG LOAD LOG --
>   attach to unsupported member dump of struct sched_ext_ops
>   processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
>   -- END PROG LOAD LOG --
>   05:26:48 [WARN] libbpf: prog 'layered_dump': failed to load: -524
>   05:26:48 [WARN] libbpf: failed to load object 'bpf_bpf'
>   05:26:48 [WARN] libbpf: failed to load BPF skeleton 'bpf_bpf': -524
>   Error: Failed to load BPF program
> 
> Signed-off-by: Manu Bretelle <chantr4@...il.com>

Applied to sched_ext/for-6.12.

Thanks.

-- 
tejun