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-rw-r--r--arch/powerpc/kernel/time.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index b3b1441..b3dab20 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -510,7 +510,6 @@ void timer_interrupt(struct pt_regs * regs)
*/
may_hard_irq_enable();
- __get_cpu_var(irq_stat).timer_irqs++;
#if defined(CONFIG_PPC32) && defined(CONFIG_PMAC)
if (atomic_read(&ppc_n_lost_interrupts) != 0)
@@ -532,10 +531,15 @@ void timer_interrupt(struct pt_regs * regs)
*next_tb = ~(u64)0;
if (evt->event_handler)
evt->event_handler(evt);
+ __get_cpu_var(irq_stat).timer_irqs_event++;
} else {
now = *next_tb - now;
if (now <= DECREMENTER_MAX)
set_dec((int)now);
+ /* We may have raced with new irq work */
+ if (test_irq_work_pending())
+ set_dec(1);
+ __get_cpu_var(irq_stat).timer_irqs_others++;
}
#ifdef CONFIG_PPC64
@@ -801,8 +805,16 @@ static void __init clocksource_init(void)
static int decrementer_set_next_event(unsigned long evt,
struct clock_event_device *dev)
{
+ /* Don't adjust the decrementer if some irq work is pending */
+ if (test_irq_work_pending())
+ return 0;
__get_cpu_var(decrementers_next_tb) = get_tb_or_rtc() + evt;
set_dec(evt);
+
+ /* We may have raced with new irq work */
+ if (test_irq_work_pending())
+ set_dec(1);
+
return 0;
}

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