diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-08 12:04:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-08 12:04:04 -0700 |
| commit | 7c1632ba76d94b4847fde79f67faa91ef8571fe9 (patch) | |
| tree | 012076beb659ee4609a8101c1fa9e90c759a38f0 | |
| parent | a888f96a154b70804c5b29ee02e4d3bda6d55e56 (diff) | |
| parent | 9bcbdd9c58617f1301dd4f17c738bb9bc73aca70 (diff) | |
Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, timers: Check for pending timers after (device) interrupts
NOHZ: update idle state also when NOHZ is inactive
| -rw-r--r-- | arch/x86/kernel/irq.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/smp.c | 1 | ||||
| -rw-r--r-- | kernel/time/tick-sched.c | 9 |
3 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 74656d1d4e3..39120619951 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -244,6 +244,7 @@ unsigned int __irq_entry do_IRQ(struct pt_regs *regs) __func__, smp_processor_id(), vector, irq); } + run_local_timers(); irq_exit(); set_irq_regs(old_regs); @@ -268,6 +269,7 @@ void smp_generic_interrupt(struct pt_regs *regs) if (generic_interrupt_extension) generic_interrupt_extension(); + run_local_timers(); irq_exit(); set_irq_regs(old_regs); diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index ec1de97600e..d915d956e66 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -198,6 +198,7 @@ void smp_reschedule_interrupt(struct pt_regs *regs) { ack_APIC_irq(); inc_irq_stat(irq_resched_count); + run_local_timers(); /* * KVM uses this interrupt to force a cpu out of guest mode */ diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index e0f59a21c06..89aed5933ed 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -231,6 +231,13 @@ void tick_nohz_stop_sched_tick(int inidle) if (!inidle && !ts->inidle) goto end; + /* + * Set ts->inidle unconditionally. Even if the system did not + * switch to NOHZ mode the cpu frequency governers rely on the + * update of the idle time accounting in tick_nohz_start_idle(). + */ + ts->inidle = 1; + now = tick_nohz_start_idle(ts); /* @@ -248,8 +255,6 @@ void tick_nohz_stop_sched_tick(int inidle) if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE)) goto end; - ts->inidle = 1; - if (need_resched()) goto end; |