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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 <iamyooon@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1471339568-5790-1-git-send-email-iamyooon@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
seokhoon.yoon 2016-08-16 18:26:08 +09:00 committed by Ingo Molnar
parent 2665621506
commit efca03ecbe
1 changed files with 0 additions and 4 deletions
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4
kernel/sched/core.c
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@ -7554,10 +7554,6 @@ void __init sched_init(void)
set_load_weight(&init_task); 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: * The boot idle thread does lazy MMU switching as well:
*/ */