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Commit 3abbd337 authored by Zhao Yakui's avatar Zhao Yakui Committed by Len Brown
Browse files

ACPI: Set _PSD ACPI_PDC_SMP_T_SWCOORD 



The ACPI_PDC_SMP_T_SWCOORD bit is set by and OS that is capable of
native ACPI throttling software coordination for mutli-processors
using the _TSD information.

Signed-off-by: default avatarZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent aa629992

arch/ia64/kernel/acpi-processor.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -45,6 +45,12 @@ static void init_intel_pdc(struct acpi_processor *pr) 
	buf[0] = ACPI_PDC_REVISION_ID;

	buf[0] = ACPI_PDC_REVISION_ID;

	buf[1] = 1;

	buf[1] = 1;

	buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;

	buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;

	/*

	 * The default of PDC_SMP_T_SWCOORD bit is set for IA64 cpu so

	 * that OSPM is capable of native ACPI throttling software

	 * coordination using BIOS supplied _TSD info.

	 */

	buf[2] |= ACPI_PDC_SMP_T_SWCOORD;





	obj->type = ACPI_TYPE_BUFFER;

	obj->type = ACPI_TYPE_BUFFER;

	obj->buffer.length = 12;

	obj->buffer.length = 12;

arch/x86/kernel/acpi/processor.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -46,6 +46,12 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c) 
	buf[1] = 1;

	buf[1] = 1;

	buf[2] = ACPI_PDC_C_CAPABILITY_SMP;

	buf[2] = ACPI_PDC_C_CAPABILITY_SMP;





	/*

	 * The default of PDC_SMP_T_SWCOORD bit is set for intel x86 cpu so

	 * that OSPM is capable of native ACPI throttling software

	 * coordination using BIOS supplied _TSD info.

	 */

	buf[2] |= ACPI_PDC_SMP_T_SWCOORD;

	if (cpu_has(c, X86_FEATURE_EST))

	if (cpu_has(c, X86_FEATURE_EST))

		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;

		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;