Re: [PATCH v2] cpufreq: CPPC: Correct desired_perf calculation
From: Hoan Tran
Date: Thu Oct 13 2016 - 17:22:18 EST
On Thu, Oct 13, 2016 at 2:12 PM, Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote:
> On Thu, Oct 13, 2016 at 9:37 PM, Prakash, Prashanth
> <pprakash@xxxxxxxxxxxxxx> wrote:
>> On 10/13/2016 11:33 AM, Hoan Tran wrote:
>>> The desired_perf is an abstract performance number. Its value should
>>> be in the range of [lowest perf, highest perf] of CPPC.
>>> The correct calculation is
>>> desired_perf = freq * cppc_highest_perf / cppc_dmi_max_khz
>>> And cppc_cpufreq_set_target() returns if desired_perf is exactly
>>> the same with the old perf.
>>> Signed-off-by: Hoan Tran <hotran@xxxxxxx>
>> Reviewed-by: Prashanth Prakash <pprakash@xxxxxxxxxxxxxx>
>> Hi Rafael,
>> Can you please pick this one for 4.9, as it is bug fix?
> Sure, I will queue it up.
Thanks, Rafael and Prashanth !