From d81c45e1c9369855901420f79114852eba2ea16a Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Fri, 16 Oct 2009 09:20:41 +0800 Subject: ACPI: Notify the _PPC evaluation status to the platform According to the ACPI spec(section 8.4.4.3) OSPM should convey the _PPC evaluations status to the platform if there exists the _OST object. The _OST contains two arguments: The first is the PERFORMANCE notificatin event. The second is the status of _PPC object. OSPM will convey the _PPC evaluation status to the platform. Of course when the module parameter of "ignore_ppc" is added, OSPM won't evaluate the _PPC object. But it will call the _OST object. At the same time the _OST object will be evaluated only when the PERFORMANCE notification event is received. Signed-off-by: Zhao Yakui Signed-off-by: Len Brown --- drivers/acpi/processor_core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/acpi/processor_core.c') diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index c567b46dfa0f..773d7e76f301 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -722,7 +722,7 @@ static void acpi_processor_notify(struct acpi_device *device, u32 event) switch (event) { case ACPI_PROCESSOR_NOTIFY_PERFORMANCE: saved = pr->performance_platform_limit; - acpi_processor_ppc_has_changed(pr); + acpi_processor_ppc_has_changed(pr, 1); if (saved == pr->performance_platform_limit) break; acpi_bus_generate_proc_event(device, event, @@ -758,7 +758,7 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb, struct acpi_processor *pr = per_cpu(processors, cpu); if (action == CPU_ONLINE && pr) { - acpi_processor_ppc_has_changed(pr); + acpi_processor_ppc_has_changed(pr, 0); acpi_processor_cst_has_changed(pr); acpi_processor_tstate_has_changed(pr); } @@ -830,7 +830,7 @@ static int acpi_processor_add(struct acpi_device *device) arch_acpi_processor_cleanup_pdc(pr); #ifdef CONFIG_CPU_FREQ - acpi_processor_ppc_has_changed(pr); + acpi_processor_ppc_has_changed(pr, 0); #endif acpi_processor_get_throttling_info(pr); acpi_processor_get_limit_info(pr); -- cgit v1.2.3