diff options
Diffstat (limited to 'kernel/smp.c')
| -rw-r--r-- | kernel/smp.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index 52bf159ec400..86955bacbae6 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -690,10 +690,21 @@ void flush_smp_call_function_from_idle(void) cfd_seq_store(this_cpu_ptr(&cfd_seq_local)->idle, CFD_SEQ_NOCPU, smp_processor_id(), CFD_SEQ_IDLE); + local_irq_save(flags); flush_smp_call_function_queue(true); - if (local_softirq_pending()) - do_softirq(); + + if (local_softirq_pending()) { + + if (!IS_ENABLED(CONFIG_PREEMPT_RT)) { + do_softirq(); + } else { + struct task_struct *ksoftirqd = this_cpu_ksoftirqd(); + + if (ksoftirqd && ksoftirqd->state != TASK_RUNNING) + wake_up_process(ksoftirqd); + } + } local_irq_restore(flags); } |