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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-12-13 09:55:42 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-12-27 11:02:07 +0100 |
| commit | 77fb4e0a559a960eb36d0b2c50c781c5492577eb (patch) | |
| tree | f257bafba2b403de7bf7e0070b256e76f7f2481a /include/linux/acpi.h | |
| parent | 239ed06d0eefc4ee351af69bd64742ada56c4bdb (diff) | |
| download | lwn-77fb4e0a559a960eb36d0b2c50c781c5492577eb.tar.gz lwn-77fb4e0a559a960eb36d0b2c50c781c5492577eb.zip | |
ACPI: processor: Export acpi_processor_evaluate_cst()
The intel_idle driver will be modified to use ACPI _CST subsequently
and it will need to call acpi_processor_evaluate_cst(), so move that
function to acpi_processor.c so that it is always present (which is
required by intel_idle) and export it to modules to allow the ACPI
processor driver (which is modular) to call it.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 9 |
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 |