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| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2007-09-16 15:36:43 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@chaos.(none)> | 2007-09-16 15:36:43 +0200 |
| commit | 729c6ba334771f28a54efd7e3b8f5ab9414ce7bc (patch) | |
| tree | 172a04173bf158d4e8e264cdf9360fa19e71faef /drivers | |
| parent | timekeeping: Prevent time going backwards on resume (diff) | |
| download | linux-729c6ba334771f28a54efd7e3b8f5ab9414ce7bc.tar.xz linux-729c6ba334771f28a54efd7e3b8f5ab9414ce7bc.zip | |
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) return; } +static int acpi_cpu_soft_notify(struct notifier_block *nfb, + unsigned long action, void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + struct acpi_processor *pr = processors[cpu]; + + if (action == CPU_ONLINE && pr) { + acpi_processor_ppc_has_changed(pr); + acpi_processor_cst_has_changed(pr); + acpi_processor_tstate_has_changed(pr); + } + return NOTIFY_OK; +} + +static struct notifier_block acpi_cpu_notifier = +{ + .notifier_call = acpi_cpu_soft_notify, +}; + static int acpi_processor_add(struct acpi_device *device) { struct acpi_processor *pr = NULL; @@ -987,6 +1006,7 @@ void acpi_processor_install_hotplug_notify(void) ACPI_UINT32_MAX, processor_walk_namespace_cb, &action, NULL); #endif + register_hotcpu_notifier(&acpi_cpu_notifier); } static @@ -999,6 +1019,7 @@ void acpi_processor_uninstall_hotplug_notify(void) ACPI_UINT32_MAX, processor_walk_namespace_cb, &action, NULL); #endif + unregister_hotcpu_notifier(&acpi_cpu_notifier); } /* |