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sched/fair: Use __this_cpu_read() in wake_wide() 

The code is executed with preemption(and interrupts) disabled,
so it's safe to use __this_cpu_write().

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200421144123.33580-1-songmuchun@bytedance.com
This commit is contained in:
Muchun Song 2020-04-21 22:41:23 +08:00 committed by Peter Zijlstra
parent bf2c59fce4
commit 17c891ab34
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/fair.c
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@ -5718,7 +5718,7 @@ static int wake_wide(struct task_struct *p)
{
unsigned int master = current->wakee_flips;
unsigned int slave = p->wakee_flips;
int factor = this_cpu_read(sd_llc_size);
int factor = __this_cpu_read(sd_llc_size);
if (master < slave)
swap(master, slave);