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>
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@ -724,6 +724,25 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
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return;
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}
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static int acpi_cpu_soft_notify(struct notifier_block *nfb,
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unsigned long action, void *hcpu)
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{
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unsigned int cpu = (unsigned long)hcpu;
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struct acpi_processor *pr = processors[cpu];
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if (action == CPU_ONLINE && pr) {
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acpi_processor_ppc_has_changed(pr);
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acpi_processor_cst_has_changed(pr);
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acpi_processor_tstate_has_changed(pr);
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}
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return NOTIFY_OK;
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}
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static struct notifier_block acpi_cpu_notifier =
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{
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.notifier_call = acpi_cpu_soft_notify,
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};
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static int acpi_processor_add(struct acpi_device *device)
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{
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struct acpi_processor *pr = NULL;
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@ -987,6 +1006,7 @@ void acpi_processor_install_hotplug_notify(void)
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ACPI_UINT32_MAX,
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processor_walk_namespace_cb, &action, NULL);
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#endif
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register_hotcpu_notifier(&acpi_cpu_notifier);
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}
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static
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@ -999,6 +1019,7 @@ void acpi_processor_uninstall_hotplug_notify(void)
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ACPI_UINT32_MAX,
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processor_walk_namespace_cb, &action, NULL);
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#endif
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unregister_hotcpu_notifier(&acpi_cpu_notifier);
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}
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/*
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