linux-kernel - [tip: sched/urgent] sched/autogroup: Fix sysctl move

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Date:   Mon, 30 May 2022 10:45:49 -0000
From:   "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Ivan Kozik <ivan@...ios.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: sched/urgent] sched/autogroup: Fix sysctl move

The following commit has been merged into the sched/urgent branch of tip:

Commit-ID:     82f586f923e3ac6062bc7867717a7f8afc09e0ff
Gitweb:        https://git.kernel.org/tip/82f586f923e3ac6062bc7867717a7f8afc09e0ff
Author:        Peter Zijlstra <peterz@...radead.org>
AuthorDate:    Mon, 30 May 2022 09:45:38 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Mon, 30 May 2022 12:36:36 +02:00

sched/autogroup: Fix sysctl move

Ivan reported /proc/sys/kernel/sched_autogroup_enabled went walk-about
and using the noautogroup command line parameter would result in a
boot error message.

Turns out the sysctl move placed the init function wrong.

Fixes: c8eaf6ac76f4 ("sched: move autogroup sysctls into its own file")
Reported-by: Ivan Kozik <ivan@...ios.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Tested-by: Ivan Kozik <ivan@...ios.org>
Link: https://lkml.kernel.org/r/YpR2IqndgsyMzN00@worktop.programming.kicks-ass.net
---
 kernel/sched/autogroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/autogroup.c b/kernel/sched/autogroup.c
index 16092b4..4ebaf97 100644
--- a/kernel/sched/autogroup.c
+++ b/kernel/sched/autogroup.c
@@ -36,6 +36,7 @@ void __init autogroup_init(struct task_struct *init_task)
 	kref_init(&autogroup_default.kref);
 	init_rwsem(&autogroup_default.lock);
 	init_task->signal->autogroup = &autogroup_default;
+	sched_autogroup_sysctl_init();
 }
 
 void autogroup_free(struct task_group *tg)
@@ -219,7 +220,6 @@ void sched_autogroup_exit(struct signal_struct *sig)
 static int __init setup_autogroup(char *str)
 {
 	sysctl_sched_autogroup_enabled = 0;
-	sched_autogroup_sysctl_init();
 
 	return 1;
 }