Commit d52bb94d authored by Venkatesh Pallipadi's avatar Venkatesh Pallipadi Committed by Len Brown
Browse files

Enable P-state software coordination via _PDC 

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



Signed-off-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent c52851b6

arch/i386/kernel/acpi/processor.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

arch/x86_64/kernel/acpi/processor.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

include/acpi/pdc_intel.h

+5 −0
Original line number Diff line number Diff line
@@ -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)