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Enable P-state software coordination via _PDC 

http://bugzilla.kernel.org/show_bug.cgi?id=5737

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Venkatesh Pallipadi 2005-12-14 15:05:00 -05:00 committed by Len Brown
parent c52851b60c
commit d52bb94d56
3 changed files with 7 additions and 2 deletions
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2
arch/i386/kernel/acpi/processor.c
View File

@ -47,7 +47,7 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
if (cpu_has(c, X86_FEATURE_EST))
buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
obj->type = ACPI_TYPE_BUFFER;
obj->buffer.length = 12;

2
arch/x86_64/kernel/acpi/processor.c
View File

@ -44,7 +44,7 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;
buf[2] = ACPI_PDC_EST_CAPABILITY_SWSMP;
obj->type = ACPI_TYPE_BUFFER;
obj->buffer.length = 12;

5
include/acpi/pdc_intel.h
View File

@ -18,6 +18,11 @@
ACPI_PDC_C_C1_HALT | \
ACPI_PDC_P_FFH)
#define ACPI_PDC_EST_CAPABILITY_SWSMP (ACPI_PDC_SMP_C1PT | \
ACPI_PDC_C_C1_HALT | \
ACPI_PDC_SMP_P_SWCOORD | \
ACPI_PDC_P_FFH)
#define ACPI_PDC_C_CAPABILITY_SMP (ACPI_PDC_SMP_C2C3 | \
ACPI_PDC_SMP_C1PT | \
ACPI_PDC_C_C1_HALT)