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ACPI: Reevaluate C/P/T states when a cpu becomes online

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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>
This commit is contained in:
Venkatesh Pallipadi 2007-09-16 15:36:43 +02:00 committed by Thomas Gleixner
parent 6a669ee8a7
commit 729c6ba334
1 changed files with 21 additions and 0 deletions
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21
drivers/acpi/processor_core.c
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@ -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);
}
/*