The following commit has been merged into the sched/core branch of tip:
Commit-ID: 17c891ab349138e8d8a59ca2700f42ce8af96f4e
Gitweb: https://git.kernel.org/tip/17c891ab349138e8d8a59ca2700f42ce8af96f4e
Author: Muchun Song <songmuchun@xxxxxxxxxxxxx>
AuthorDate: Tue, 21 Apr 2020 22:41:23 +08:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Thu, 30 Apr 2020 20:14:41 +02:00
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@xxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20200421144123.33580-1-songmuchun@xxxxxxxxxxxxx
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index cd7fd7e..46b7bd4 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -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);
|