Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3abbd337c60591305cbfeb984ff2922c175be37f
Commit: 3abbd337c60591305cbfeb984ff2922c175be37f
Parent: aa6299926950c8dfe2fea638276cad6def092bc9
Author: Zhao Yakui <[EMAIL PROTECTED]>
AuthorDate: Mon Jan 28 13:53:21 2008 +0800
Committer: Len Brown <[EMAIL PROTECTED]>
CommitDate: Sat Feb 2 02:22:43 2008 -0500
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: Zhao Yakui <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
arch/ia64/kernel/acpi-processor.c | 6 ++++++
arch/x86/kernel/acpi/processor.c | 6 ++++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/ia64/kernel/acpi-processor.c
b/arch/ia64/kernel/acpi-processor.c
index 5a216c0..cbe6cee 100644
--- a/arch/ia64/kernel/acpi-processor.c
+++ b/arch/ia64/kernel/acpi-processor.c
@@ -45,6 +45,12 @@ static void init_intel_pdc(struct acpi_processor *pr)
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
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->buffer.length = 12;
diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c
index a25db51..324eb0c 100644
--- a/arch/x86/kernel/acpi/processor.c
+++ b/arch/x86/kernel/acpi/processor.c
@@ -46,6 +46,12 @@ static void init_intel_pdc(struct acpi_processor *pr, struct
cpuinfo_x86 *c)
buf[1] = 1;
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))
buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
-
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