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| author | Yao Dongdong <yaodongdong@huawei.com> | 2014-12-29 14:41:43 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-01-14 13:34:17 +0100 |
| commit | 1b537c7d1e58c761212a193085f9049b58f672e6 (patch) | |
| tree | 948a7395f03e9c16cfbba7f2f99ecdbd93cac0b6 /kernel/sched | |
| parent | bb04159df99fa353d0fb524574aca03ce2c6515b (diff) | |
| download | op-kernel-dev-1b537c7d1e58c761212a193085f9049b58f672e6.zip op-kernel-dev-1b537c7d1e58c761212a193085f9049b58f672e6.tar.gz | |
sched/core: Remove check of p->sched_class
Search all usage of p->sched_class in sched/core.c, no one check it
before use, so it seems that every task must belong to one sched_class.
Signed-off-by: Yao Dongdong <yaodongdong@huawei.com>
[ Moved the early class assignment to make it boot. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1419835303-28958-1-git-send-email-yaodongdong@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 95ac795..46a2345 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4744,7 +4744,7 @@ static struct rq *move_queued_task(struct task_struct *p, int new_cpu) void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask) { - if (p->sched_class && p->sched_class->set_cpus_allowed) + if (p->sched_class->set_cpus_allowed) p->sched_class->set_cpus_allowed(p, new_mask); cpumask_copy(&p->cpus_allowed, new_mask); @@ -7254,6 +7254,11 @@ void __init sched_init(void) enter_lazy_tlb(&init_mm, current); /* + * During early bootup we pretend to be a normal task: + */ + current->sched_class = &fair_sched_class; + + /* * Make us the idle thread. Technically, schedule() should not be * called from this thread, however somewhere below it might be, * but because we are the idle thread, we just pick up running again @@ -7263,11 +7268,6 @@ void __init sched_init(void) calc_load_update = jiffies + LOAD_FREQ; - /* - * During early bootup we pretend to be a normal task: - */ - current->sched_class = &fair_sched_class; - #ifdef CONFIG_SMP zalloc_cpumask_var(&sched_domains_tmpmask, GFP_NOWAIT); /* May be allocated at isolcpus cmdline parse time */ |
