From efca03ecbe29a46c2c5ae539563b6326af9dcba7 Mon Sep 17 00:00:00 2001 From: "seokhoon.yoon" Date: Tue, 16 Aug 2016 18:26:08 +0900 Subject: [PATCH] schedcore: Remove duplicated init_task's preempt_notifiers init init_task's preempt_notifiers is initialized twice: 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 the first one is unnecessary, so remove it. Signed-off-by: seokhoon.yoon Signed-off-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1471339568-5790-1-git-send-email-iamyooon@gmail.com Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 7d602f508ca1..90b1961f6ea5 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7554,10 +7554,6 @@ 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: */ -- 2.39.2