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| author | Cheng Jian <cj.chengjian@huawei.com> | 2017-08-04 17:19:37 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-08-10 12:18:18 +0200 |
| commit | 18f08dae19990f5fffde92e3a63e0d90cda0f1a8 (patch) | |
| tree | 541e061023393f4b24ae0a9a490258319a62c984 /init/main.c | |
| parent | 3261ed0b25098f92d36d5ad14524254d8c7fba54 (diff) | |
| download | linux-18f08dae19990f5fffde92e3a63e0d90cda0f1a8.tar.bz2 | |
sched/core: Remove unnecessary initialization init_idle_bootup_task()
init_idle_bootup_task( ) is called in rest_init( ) to switch
the scheduling class of the boot thread to the idle class.
the function only sets:
idle->sched_class = &idle_sched_class;
which has been set in init_idle() called by sched_init():
/*
* The idle tasks have their own, simple scheduling class:
*/
idle->sched_class = &idle_sched_class;
We've already set the boot thread to idle class in
start_kernel()->sched_init()->init_idle()
so it's unnecessary to set it again in
start_kernel()->rest_init()->init_idle_bootup_task()
Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <akpm@linux-foundation.org>
Cc: <huawei.libin@huawei.com>
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/1501838377-109720-1-git-send-email-cj.chengjian@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index 052481fbe363..881d62438b1a 100644 --- a/init/main.c +++ b/init/main.c @@ -430,7 +430,6 @@ static noinline void __ref rest_init(void) * The boot idle thread must execute schedule() * at least once to get things moving: */ - init_idle_bootup_task(current); schedule_preempt_disabled(); /* Call into cpu_idle with preempt disabled */ cpu_startup_entry(CPUHP_ONLINE); |