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| author |   Peter Zijlstra <peterz@infradead.org> | 2017-08-29 15:07:54 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-10-10 11:43:29 +0200 |
| commit | 62cb1188ed86a9cf082fd2f757d4dd9b54741f24 (patch) | |
| tree | 7d4e28f82b4f5f9dc3cc5e437135542b749eabfe | |
| parent | Merge branch 'sched/urgent' into sched/core, to pick up fixes (diff) | |
| download | linux-dev-62cb1188ed86a9cf082fd2f757d4dd9b54741f24.tar.xz linux-dev-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>
| -rw-r--r-- | kernel/sched/idle.c | 1 | ||||
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 257f4f0b4532..b2e8f0afbb42 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -219,7 +219,6 @@ static void do_idle(void) */ __current_set_polling(); - quiet_vmstat(); tick_nohz_idle_enter(); while (!need_resched()) { 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; |