diff options
| -rw-r--r-- | include/linux/tick.h | 2 | ||||
| -rw-r--r-- | kernel/sched/core.c | 4 | ||||
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
3 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index d290168335b..e31e67623ea 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -160,11 +160,13 @@ static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; } #ifdef CONFIG_NO_HZ_FULL extern void tick_nohz_init(void); extern int tick_nohz_full_cpu(int cpu); +extern void tick_nohz_full_check(void); extern void tick_nohz_full_kick(void); extern void tick_nohz_full_kick_all(void); #else static inline void tick_nohz_init(void) { } static inline int tick_nohz_full_cpu(int cpu) { return 0; } +static inline void tick_nohz_full_check(void) { } static inline void tick_nohz_full_kick(void) { } static inline void tick_nohz_full_kick_all(void) { } #endif diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 69f71335984..9ad35005f1c 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1398,7 +1398,8 @@ static void sched_ttwu_pending(void) void scheduler_ipi(void) { - if (llist_empty(&this_rq()->wake_list) && !got_nohz_idle_kick()) + if (llist_empty(&this_rq()->wake_list) && !got_nohz_idle_kick() + && !tick_nohz_full_cpu(smp_processor_id())) return; /* @@ -1415,6 +1416,7 @@ void scheduler_ipi(void) * somewhat pessimize the simple resched case. */ irq_enter(); + tick_nohz_full_check(); sched_ttwu_pending(); /* diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 884a9f302a0..4d74a68b2c3 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -151,7 +151,7 @@ bool have_nohz_full_mask; * Re-evaluate the need for the tick on the current CPU * and restart it if necessary. */ -static void tick_nohz_full_check(void) +void tick_nohz_full_check(void) { /* * STUB for now, will be filled with the full tick stop/restart |