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ACPI / processor: use apic_id and remove duplicated _MAT evaluation

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Since APIC id is saved in processor struct, just 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>
This commit is contained in:
Jiang Liu
2013-09-02 11:57:35 +08:00
committed by Rafael J. Wysocki
父節點 ca9f62ac78
當前提交 d536bf3dc9
共有 4 個文件被更改，包括 9 次插入 和 71 次删除
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38
arch/x86/kernel/acpi/boot.c
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@@ -614,44 +614,12 @@ static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
#endif
}
static int _acpi_map_lsapic(acpi_handle handle, int *pcpu)
static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
struct acpi_madt_local_apic *lapic;
cpumask_var_t tmp_map, new_map;
u8 physid;
int cpu;
int retval = -ENOMEM;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
return -EINVAL;
if (!buffer.length || !buffer.pointer)
return -EINVAL;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_BUFFER ||
obj->buffer.length < sizeof(*lapic)) {
kfree(buffer.pointer);
return -EINVAL;
}
lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
!(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
kfree(buffer.pointer);
return -EINVAL;
}
physid = lapic->id;
kfree(buffer.pointer);
buffer.length = ACPI_ALLOCATE_BUFFER;
buffer.pointer = NULL;
lapic = NULL;
if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
goto out;
@@ -689,9 +657,9 @@ out:
}
/* wrapper to silence section mismatch warning */
int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
{
return _acpi_map_lsapic(handle, pcpu);
return _acpi_map_lsapic(handle, physid, pcpu);
}
EXPORT_SYMBOL(acpi_map_lsapic);