[PATCH v3 2/2] ARM64 / cpuidle: Use new cpuidle macro for entering retention state

[Sudeep Holla]

On 15/11/17 17:11, Prashanth Prakash wrote:
> CPU_PM_CPU_IDLE_ENTER_RETENTION skips calling cpu_pm_enter() and
> cpu_pm_exit(). By not calling cpu_pm functions in idle entry/exit
> paths we can reduce the latency involved in entering and exiting
> the low power idle state.
> 
> On ARM64 based Qualcomm server platform we measured below overhead
> for calling cpu_pm_enter and cpu_pm_exit for retention states.
> 
> workload: stress --hdd #CPUs --hdd-bytes 32M  -t 30
> 	Average overhead of cpu_pm_enter - 1.2us
> 	Average overhead of cpu_pm_exit  - 3.1us
> 
> Signed-off-by: Prashanth Prakash <pprakash at codeaurora.org>

Acked-by: Sudeep Holla <sudeep.holla at arm.com>

-- 
Regards,
Sudeep