diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/kernel/process.c | 5 | ||||
| -rw-r--r-- | arch/arm/kernel/time.c | 10 |
2 files changed, 11 insertions, 4 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 8f146a4b475..bbea636ff68 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -32,6 +32,7 @@ #include <asm/leds.h> #include <asm/processor.h> #include <asm/uaccess.h> +#include <asm/mach/time.h> extern const char *processor_modes[]; extern void setup_mm_for_reboot(char mode); @@ -85,8 +86,10 @@ EXPORT_SYMBOL(pm_power_off); void default_idle(void) { local_irq_disable(); - if (!need_resched() && !hlt_counter) + if (!need_resched() && !hlt_counter) { + timer_dyn_reprogram(); arch_idle(); + } local_irq_enable(); } diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index 06054c9ba07..1b7fcd50c3e 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -424,15 +424,19 @@ static int timer_dyn_tick_disable(void) return ret; } +/* + * Reprogram the system timer for at least the calculated time interval. + * This function should be called from the idle thread with IRQs disabled, + * immediately before sleeping. + */ void timer_dyn_reprogram(void) { struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick; - unsigned long flags; - write_seqlock_irqsave(&xtime_lock, flags); + write_seqlock(&xtime_lock); if (dyn_tick->state & DYN_TICK_ENABLED) dyn_tick->reprogram(next_timer_interrupt() - jiffies); - write_sequnlock_irqrestore(&xtime_lock, flags); + write_sequnlock(&xtime_lock); } static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf) |