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| author | venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> | 2008-01-31 17:35:06 -0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-02-07 02:20:15 -0500 |
| commit | 9a0b841586c3c6c846effdbe75885c2ebc0031b0 (patch) | |
| tree | d9522222094b6357c7933489b98c7249326e1cf8 /include/linux/cpuidle.h | |
| parent | 9b12e18cdc1553de62d931e73443c806347cd974 (diff) | |
| download | blackbird-op-linux-9a0b841586c3c6c846effdbe75885c2ebc0031b0.tar.gz blackbird-op-linux-9a0b841586c3c6c846effdbe75885c2ebc0031b0.zip | |
cpuidle: Add a poll_idle method
Add a default poll idle state with 0 latency. Provides an option to users
to use poll_idle by using 0 as the latency requirement.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/linux/cpuidle.h')
| -rw-r--r-- | include/linux/cpuidle.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index b0fd85ab9efb..385d45b616db 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -46,9 +46,10 @@ struct cpuidle_state { /* Idle State Flags */ #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ #define CPUIDLE_FLAG_CHECK_BM (0x02) /* BM activity will exit state */ -#define CPUIDLE_FLAG_SHALLOW (0x10) /* low latency, minimal savings */ -#define CPUIDLE_FLAG_BALANCED (0x20) /* medium latency, moderate savings */ -#define CPUIDLE_FLAG_DEEP (0x40) /* high latency, large savings */ +#define CPUIDLE_FLAG_POLL (0x10) /* no latency, no savings */ +#define CPUIDLE_FLAG_SHALLOW (0x20) /* low latency, minimal savings */ +#define CPUIDLE_FLAG_BALANCED (0x40) /* medium latency, moderate savings */ +#define CPUIDLE_FLAG_DEEP (0x80) /* high latency, large savings */ #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) @@ -178,4 +179,10 @@ static inline void cpuidle_unregister_governor(struct cpuidle_governor *gov) { } #endif +#ifdef CONFIG_ARCH_HAS_CPU_RELAX +#define CPUIDLE_DRIVER_STATE_START 1 +#else +#define CPUIDLE_DRIVER_STATE_START 0 +#endif + #endif /* _LINUX_CPUIDLE_H */ |
