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-rw-r--r--arch/arm/kernel/process.c5
-rw-r--r--arch/arm/kernel/time.c10
2 files changed, 11 insertions, 4 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 8f146a4b4752..bbea636ff687 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -32,6 +32,7 @@
32#include <asm/leds.h> 32#include <asm/leds.h>
33#include <asm/processor.h> 33#include <asm/processor.h>
34#include <asm/uaccess.h> 34#include <asm/uaccess.h>
35#include <asm/mach/time.h>
35 36
36extern const char *processor_modes[]; 37extern const char *processor_modes[];
37extern void setup_mm_for_reboot(char mode); 38extern void setup_mm_for_reboot(char mode);
@@ -85,8 +86,10 @@ EXPORT_SYMBOL(pm_power_off);
85void default_idle(void) 86void default_idle(void)
86{ 87{
87 local_irq_disable(); 88 local_irq_disable();
88 if (!need_resched() && !hlt_counter) 89 if (!need_resched() && !hlt_counter) {
90 timer_dyn_reprogram();
89 arch_idle(); 91 arch_idle();
92 }
90 local_irq_enable(); 93 local_irq_enable();
91} 94}
92 95
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 06054c9ba074..1b7fcd50c3e2 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -424,15 +424,19 @@ static int timer_dyn_tick_disable(void)
424 return ret; 424 return ret;
425} 425}
426 426
427/*
428 * Reprogram the system timer for at least the calculated time interval.
429 * This function should be called from the idle thread with IRQs disabled,
430 * immediately before sleeping.
431 */
427void timer_dyn_reprogram(void) 432void timer_dyn_reprogram(void)
428{ 433{
429 struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick; 434 struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick;
430 unsigned long flags;
431 435
432 write_seqlock_irqsave(&xtime_lock, flags); 436 write_seqlock(&xtime_lock);
433 if (dyn_tick->state & DYN_TICK_ENABLED) 437 if (dyn_tick->state & DYN_TICK_ENABLED)
434 dyn_tick->reprogram(next_timer_interrupt() - jiffies); 438 dyn_tick->reprogram(next_timer_interrupt() - jiffies);
435 write_sequnlock_irqrestore(&xtime_lock, flags); 439 write_sequnlock(&xtime_lock);
436} 440}
437 441
438static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf) 442static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf)