linux-kernel - linux-next: build failure after merge of the cgroup tree

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Message-ID: <20230717113457.527d7483@canb.auug.org.au>
Date:   Mon, 17 Jul 2023 11:34:57 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Tejun Heo <tj@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Josh Don <joshdon@...gle.com>, Miaohe Lin <linmiaohe@...wei.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the cgroup tree

Hi all,

After merging the cgroup tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

kernel/cgroup/cgroup.c: In function 'cgroup_local_stat_show':
kernel/cgroup/cgroup.c:3699:15: error: implicit declaration of function 'cgroup_tryget_css'; did you mean 'cgroup_tryget'? [-Werror=implicit-function-declaration]
 3699 |         css = cgroup_tryget_css(cgrp, ss);
      |               ^~~~~~~~~~~~~~~~~
      |               cgroup_tryget
kernel/cgroup/cgroup.c:3699:13: warning: assignment to 'struct cgroup_subsys_state *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
 3699 |         css = cgroup_tryget_css(cgrp, ss);
      |             ^

Caused by commit

  d1d4ff5d11a5 ("cgroup: put cgroup_tryget_css() inside CONFIG_CGROUP_SCHED")

interacting with commit

  677ea015f231 ("sched: add throttled time stat for throttled children")

from the tip tree.

I have reverted commit d1d4ff5d11a5 for today.

-- 
Cheers,
Stephen Rothwell

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