summaryrefslogtreecommitdiffstats
path: root/kernel/time
diff options
context:
space:
mode:
authorPeter Zijlstra <peterz@infradead.org>2017-08-29 15:07:54 +0200
committerIngo Molnar <mingo@kernel.org>2017-10-10 11:43:29 +0200
commit62cb1188ed86a9cf082fd2f757d4dd9b54741f24 (patch)
tree7d4e28f82b4f5f9dc3cc5e437135542b749eabfe /kernel/time
parent151aeab77738469ddbf0f9532e2fddd0d231aa2b (diff)
downloadlinux-stable-62cb1188ed86a9cf082fd2f757d4dd9b54741f24.tar.gz
linux-stable-62cb1188ed86a9cf082fd2f757d4dd9b54741f24.tar.bz2
linux-stable-62cb1188ed86a9cf082fd2f757d4dd9b54741f24.zip
sched/idle: Move quiet_vmstate() into the NOHZ code
quiet_vmstat() is an expensive function that only makes sense when we go into NOHZ. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: aubrey.li@linux.intel.com Cc: cl@linux.com Cc: fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/tick-sched.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index c7a899c5ce64..7b258c59d78a 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -27,6 +27,7 @@
#include <linux/irq_work.h>
#include <linux/posix-timers.h>
#include <linux/context_tracking.h>
+#include <linux/mm.h>
#include <asm/irq_regs.h>
@@ -787,6 +788,7 @@ static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
if (!ts->tick_stopped) {
calc_load_nohz_start();
cpu_load_update_nohz_start();
+ quiet_vmstat();
ts->last_tick = hrtimer_get_expires(&ts->sched_timer);
ts->tick_stopped = 1;