Re: [PATCH v2] cpufreq: CPPC: Correct desired_perf calculation
From: Rafael J. Wysocki
Date: Thu Oct 13 2016 - 17:12:23 EST
On Thu, Oct 13, 2016 at 9:37 PM, Prakash, Prashanth
> 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.