Commit-ID: 1b537c7d1e58c761212a193085f9049b58f672e6 Gitweb: http://git.kernel.org/tip/1b537c7d1e58c761212a193085f9049b58f672e6 Author: Yao Dongdong <yaodongd...@huawei.com> AuthorDate: Mon, 29 Dec 2014 14:41:43 +0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 14 Jan 2015 13:34:17 +0100
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 <yaodongd...@huawei.com> [ Moved the early class assignment to make it boot. ] Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Link: http://lkml.kernel.org/r/1419835303-28958-1-git-send-email-yaodongd...@huawei.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/core.c | 12 ++++++------ 1 file 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 */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
