diff options
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 2b7b017a20c..5b644d3e831 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -212,8 +212,17 @@ void cpu_idle(void) leds_event(led_idle_start); while (!need_resched()) { #ifdef CONFIG_HOTPLUG_CPU - if (cpu_is_offline(smp_processor_id())) + if (cpu_is_offline(smp_processor_id())) { + + /* NOTE : preempt_count() should be 0 for dying CPU + * as the CPU will use this very thread when + * it is alive + */ + if (preempt_count()) + preempt_enable_no_resched(); + cpu_die(); + } #endif /* |