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-rw-r--r--include/linux/acpi.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ee39b05e7f76..0f24d701fbdc 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -280,10 +280,19 @@ static inline bool invalid_phys_cpuid(phys_cpuid_t phys_id)
/* Validate the processor object's proc_id */
bool acpi_duplicate_processor_id(int proc_id);
/* Processor _CTS control */
+struct acpi_processor_power;
+
#ifdef CONFIG_ACPI_PROCESSOR_CSTATE
bool acpi_processor_claim_cst_control(void);
+int acpi_processor_evaluate_cst(acpi_handle handle, u32 cpu,
+ struct acpi_processor_power *info);
#else
static inline bool acpi_processor_claim_cst_control(void) { return false; }
+static inline int acpi_processor_evaluate_cst(acpi_handle handle, u32 cpu,
+ struct acpi_processor_power *info)
+{
+ return -ENODEV;
+}
#endif
#ifdef CONFIG_ACPI_HOTPLUG_CPU