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| author | Jiang Liu <jiang.liu@huawei.com> | 2013-09-02 05:57:34 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-09-24 01:39:39 +0200 |
| commit | ca9f62ac783bf88c54143f8065adc0fc8df859c1 (patch) | |
| tree | c22585a41438abe61565def29b3a055cb6ebad70 /drivers/acpi/acpi_processor.c | |
| parent | Linux 3.12-rc2 (diff) | |
| download | linux-ca9f62ac783bf88c54143f8065adc0fc8df859c1.tar.xz linux-ca9f62ac783bf88c54143f8065adc0fc8df859c1.zip | |
ACPI / processor: Introduce apic_id in struct processor to save parsed APIC id
For cpu hot add, we evaluate _MAT or parse MADT twice to get APIC id,
here is the code logic:
acpi_processor_add()
acpi_processor_get_info()
acpi_get_cpuid() will evaluate _MAT or parse MADT;
acpi_processor_hotadd_init()
acpi_map_lsapic() will evaluate _MAT again;
This can be done more effectively, this patch introduces apic_id in struct
processor to save parsed APIC id, and then we can use it and remove the
duplicated _MAT evaluation.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpi_processor.c')
| -rw-r--r-- | drivers/acpi/acpi_processor.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index f29e06efa479..f89f914cb97e 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -270,7 +270,9 @@ static int acpi_processor_get_info(struct acpi_device *device) device_declaration = 1; pr->acpi_id = value; } - cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id); + pr->apic_id = acpi_get_apicid(pr->handle, device_declaration, + pr->acpi_id); + cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id); /* Handle UP system running SMP kernel, with no LAPIC in MADT */ if (!cpu0_initialized && (cpu_index == -1) && |