From: "seokhoon.yoon" <iamyooon@gmail.com>
To: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
iamyooon@gmail.com, linux-kernel@vger.kernel.org
Subject: [PATCH 1/1] sched: remove duplicated init_task's preempt_notifiers init
Date: Tue, 16 Aug 2016 18:26:08 +0900 [thread overview]
Message-ID: <1471339568-5790-1-git-send-email-iamyooon@gmail.com> (raw)
init_task's preempt_notifiers is initialized at two times.
1) sched_init()
-> INIT_HLIST_HEAD(&init_task.preempt_notifiers)
2) sched_init()
-> init_idle(current,) <--- current task is init_task at this time
-> __sched_fork(,current)
-> INIT_HLIST_HEAD(&p->preempt_notifiers)
I think first one is needless, remove it.
Signed-off-by: seokhoon.yoon <iamyooon@gmail.com>
---
kernel/sched/core.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 5c883fe..5760f62 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -7482,10 +7482,6 @@ void __init sched_init(void)
set_load_weight(&init_task);
-#ifdef CONFIG_PREEMPT_NOTIFIERS
- INIT_HLIST_HEAD(&init_task.preempt_notifiers);
-#endif
-
/*
* The boot idle thread does lazy MMU switching as well:
*/
--
1.9.1
next reply other threads:[~2016-08-16 9:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-16 9:26 seokhoon.yoon [this message]
2016-09-05 11:55 ` [tip:sched/core] schedcore: Remove duplicated init_task's preempt_notifiers init tip-bot for seokhoon.yoon
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