Subject: Re: linux-next: build warning after merge of the cgroup tree

From: Tejun Heo <[email-masked]>
Date: Mon, 10 Jul 2023 15:22:10 -1000

On Tue, Jul 11, 2023 at 11:15:09AM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the cgroup tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> kernel/cgroup/cgroup.c:503:36: warning: 'cgroup_tryget_css' defined but not used [-Wunused-function]
>   503 | static struct cgroup_subsys_state *cgroup_tryget_css(struct cgroup *cgrp,
>       |                                    ^~~~~~~~~~~~~~~~~
> 
> Introduced by commit
> 
>   1299eb2b0ad5 ("cgroup: minor cleanup for cgroup_extra_stat_show()")

Miaohe, can you send a patch to either add __maybe_unused to
cgroup_tryget_css() or also put it inside CONFIG_CGROUP_SCHED?

Thanks.

-- 
tejun