ACPI : Update T-state coordination after getting _TSD info

Accordint to ACPI spec, the _TSD object provides T-state control cross
logical processor dependency information to OSPM.
After the _TSD data for all cpus are obtained, OSPM will set up
the T-state coordination between CPUs.

Of course if the _TSD doesn't exist or _TSD data is incorrect , it is
assumed that there is no T-state coordination and T-state is changed
independently.

Now there is no proper solution to update T-state coordination after
one cpu is hotplugged. So this patch won't support hotplugged cpu very well.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 76411b1fc4f..d90ad0d63c2 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -176,6 +176,8 @@ struct acpi_processor_throttling {
 	u32 address;
 	u8 duty_offset;
 	u8 duty_width;
+	u8 tsd_valid_flag;
+	unsigned int shared_type;
 	struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
 };
 
@@ -316,7 +318,7 @@ static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
 int acpi_processor_get_throttling_info(struct acpi_processor *pr);
 extern int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
 extern struct file_operations acpi_processor_throttling_fops;
-
+extern void acpi_processor_throttling_init(void);
 /* in processor_idle.c */
 int acpi_processor_power_init(struct acpi_processor *pr,
 			      struct acpi_device *device);