diff options
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(); /* |