diff options
Diffstat (limited to 'kernel/softirq.c')
| -rw-r--r-- | kernel/softirq.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index 918e52df090e..8b75008e2bd8 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -17,6 +17,7 @@ #include <linux/kthread.h> #include <linux/rcupdate.h> #include <linux/smp.h> +#include <linux/tick.h> #include <asm/irq.h> /* @@ -273,6 +274,18 @@ EXPORT_SYMBOL(do_softirq); #endif +/* + * Enter an interrupt context. + */ +void irq_enter(void) +{ + __irq_enter(); +#ifdef CONFIG_NO_HZ + if (idle_cpu(smp_processor_id())) + tick_nohz_update_jiffies(); +#endif +} + #ifdef __ARCH_IRQ_EXIT_IRQS_DISABLED # define invoke_softirq() __do_softirq() #else @@ -289,6 +302,12 @@ void irq_exit(void) sub_preempt_count(IRQ_EXIT_OFFSET); if (!in_interrupt() && local_softirq_pending()) invoke_softirq(); + +#ifdef CONFIG_NO_HZ + /* Make sure that timer wheel updates are propagated */ + if (!in_interrupt() && idle_cpu(smp_processor_id()) && !need_resched()) + tick_nohz_stop_sched_tick(); +#endif preempt_enable_no_resched(); } |
