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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-11 16:22:27 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-11 16:22:27 -0300 |
commit | 29f5b648fa0b31ad614c78468b9279e5fa96397a (patch) | |
tree | 385e76324c4e95e90b16889937e7c24e6f7d4f4a /kernel/sched/idle.c | |
parent | 1eae9639aac0f8de4d284f567ec722a822b52513 (diff) |
Linux-libre 4.8.7-gnupck-4.8.7-gnu
Diffstat (limited to 'kernel/sched/idle.c')
-rw-r--r-- | kernel/sched/idle.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 060b76d85..51264e6b1 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -208,6 +208,8 @@ static void cpu_idle_loop(void) int cpu = smp_processor_id(); while (1) { + bool pending = false; + /* * If the arch has a polling bit, we maintain an invariant: * @@ -219,7 +221,10 @@ static void cpu_idle_loop(void) __current_set_polling(); quiet_vmstat(); - tick_nohz_idle_enter(); + if (unlikely(softirq_pending(cpu))) + pending = true; + else + tick_nohz_idle_enter(); while (!need_resched()) { check_pgt_cache(); @@ -259,7 +264,8 @@ static void cpu_idle_loop(void) * not have had an IPI to fold the state for us. */ preempt_set_need_resched(); - tick_nohz_idle_exit(); + if (!pending) + tick_nohz_idle_exit(); __current_clr_polling(); /* |