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authorSudeep Holla <Sudeep.Holla@arm.com>2016-07-19 20:52:56 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-07-22 00:29:38 +0300
commit220276e09bd1ccf7563b8092f7bd794336420eb1 (patch)
treed480d8d2dd714cb6e538e943e64b901bdd0f7f07 /include/linux/cpuidle.h
parentce3ad71026b10f12b46cb88226e547be886b2251 (diff)
downloadlinux-220276e09bd1ccf7563b8092f7bd794336420eb1.tar.xz
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.h18
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 */