diff options
author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2007-09-16 09:36:43 -0400 |
---|---|---|
committer | Thomas Gleixner <tglx@chaos.(none)> | 2007-09-16 09:36:43 -0400 |
commit | 729c6ba334771f28a54efd7e3b8f5ab9414ce7bc (patch) | |
tree | 172a04173bf158d4e8e264cdf9360fa19e71faef /drivers | |
parent | 6a669ee8a790487b7ec1edda762d39615a78264b (diff) |
ACPI: Reevaluate C/P/T states when a cpu becomes online
Reevaluate C/P/T states when a cpu becomes online. This avoids
the caching of the broadcast information in the clockevents layer.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/acpi/processor_core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index e944aaee4e06..2afb3d2086b3 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c | |||
@@ -724,6 +724,25 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) | |||
724 | return; | 724 | return; |
725 | } | 725 | } |
726 | 726 | ||
727 | static int acpi_cpu_soft_notify(struct notifier_block *nfb, | ||
728 | unsigned long action, void *hcpu) | ||
729 | { | ||
730 | unsigned int cpu = (unsigned long)hcpu; | ||
731 | struct acpi_processor *pr = processors[cpu]; | ||
732 | |||
733 | if (action == CPU_ONLINE && pr) { | ||
734 | acpi_processor_ppc_has_changed(pr); | ||
735 | acpi_processor_cst_has_changed(pr); | ||
736 | acpi_processor_tstate_has_changed(pr); | ||
737 | } | ||
738 | return NOTIFY_OK; | ||
739 | } | ||
740 | |||
741 | static struct notifier_block acpi_cpu_notifier = | ||
742 | { | ||
743 | .notifier_call = acpi_cpu_soft_notify, | ||
744 | }; | ||
745 | |||
727 | static int acpi_processor_add(struct acpi_device *device) | 746 | static int acpi_processor_add(struct acpi_device *device) |
728 | { | 747 | { |
729 | struct acpi_processor *pr = NULL; | 748 | struct acpi_processor *pr = NULL; |
@@ -987,6 +1006,7 @@ void acpi_processor_install_hotplug_notify(void) | |||
987 | ACPI_UINT32_MAX, | 1006 | ACPI_UINT32_MAX, |
988 | processor_walk_namespace_cb, &action, NULL); | 1007 | processor_walk_namespace_cb, &action, NULL); |
989 | #endif | 1008 | #endif |
1009 | register_hotcpu_notifier(&acpi_cpu_notifier); | ||
990 | } | 1010 | } |
991 | 1011 | ||
992 | static | 1012 | static |
@@ -999,6 +1019,7 @@ void acpi_processor_uninstall_hotplug_notify(void) | |||
999 | ACPI_UINT32_MAX, | 1019 | ACPI_UINT32_MAX, |
1000 | processor_walk_namespace_cb, &action, NULL); | 1020 | processor_walk_namespace_cb, &action, NULL); |
1001 | #endif | 1021 | #endif |
1022 | unregister_hotcpu_notifier(&acpi_cpu_notifier); | ||
1002 | } | 1023 | } |
1003 | 1024 | ||
1004 | /* | 1025 | /* |