diff options
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 807b0df308f1..cc049338e418 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -843,6 +843,15 @@ static int acpi_processor_power_verify(struct acpi_processor *pr) unsigned int i; unsigned int working = 0; +#ifdef ARCH_APICTIMER_STOPS_ON_C3 + struct cpuinfo_x86 *c = cpu_data + pr->id; + cpumask_t mask = cpumask_of_cpu(pr->id); + + if (c->x86_vendor == X86_VENDOR_INTEL) { + on_each_cpu(switch_ipi_to_APIC_timer, &mask, 1, 1); + } +#endif + for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) { struct acpi_processor_cx *cx = &pr->power.states[i]; @@ -857,6 +866,12 @@ static int acpi_processor_power_verify(struct acpi_processor *pr) case ACPI_STATE_C3: acpi_processor_power_verify_c3(pr, cx); +#ifdef ARCH_APICTIMER_STOPS_ON_C3 + if (c->x86_vendor == X86_VENDOR_INTEL) { + on_each_cpu(switch_APIC_timer_to_ipi, + &mask, 1, 1); + } +#endif break; } |