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| author | Sudeep Holla <Sudeep.Holla@arm.com> | 2016-07-19 18:52:56 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-07-21 23:29:38 +0200 |
| commit | 220276e09bd1ccf7563b8092f7bd794336420eb1 (patch) | |
| tree | d480d8d2dd714cb6e538e943e64b901bdd0f7f07 /include/linux/cpuidle.h | |
| parent | ce3ad71026b10f12b46cb88226e547be886b2251 (diff) | |
| download | lwn-220276e09bd1ccf7563b8092f7bd794336420eb1.tar.gz lwn-220276e09bd1ccf7563b8092f7bd794336420eb1.zip | |
cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64}
The function arm_enter_idle_state is exactly the same in both generic
ARM{32,64} CPUIdle driver and will be the same even on ARM64 backend
for ACPI processor idle driver. So we can unify it and move it to a
common place by introducing CPU_PM_CPU_IDLE_ENTER macro that can be
used in all places avoiding duplication.
This is in preparation of reuse of the generic cpuidle entry function
for ACPI LPI support on ARM64.
Suggested-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle.h')
| -rw-r--r-- | include/linux/cpuidle.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 07b83d32f66c..bb31373c3478 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -252,4 +252,22 @@ static inline int cpuidle_register_governor(struct cpuidle_governor *gov) #define CPUIDLE_DRIVER_STATE_START 0 #endif +#define CPU_PM_CPU_IDLE_ENTER(low_level_idle_enter, idx) \ +({ \ + int __ret; \ + \ + if (!idx) { \ + cpu_do_idle(); \ + return idx; \ + } \ + \ + __ret = cpu_pm_enter(); \ + if (!__ret) { \ + __ret = low_level_idle_enter(idx); \ + cpu_pm_exit(); \ + } \ + \ + __ret ? -1 : idx; \ +}) + #endif /* _LINUX_CPUIDLE_H */ |