From: "Prakash, Prashanth" <pprakash@codeaurora.org>
To: Hoan Tran <hotran@apm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>,
Al Stone <ahs3@redhat.com>
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
lho@apm.com, Duc Dang <dhdang@apm.com>,
Christopher Covington <cov@codeaurora.org>
Subject: Re: [PATCH v2] cpufreq: CPPC: Correct desired_perf calculation
Date: Thu, 13 Oct 2016 13:37:11 -0600 [thread overview]
Message-ID: <b027d9b7-67c5-68e7-d412-1f22edef34cc@codeaurora.org> (raw)
In-Reply-To: <1476380015-21001-1-git-send-email-hotran@apm.com>
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@apm.com>
Reviewed-by: Prashanth Prakash <pprakash@codeaurora.org>
Hi Rafael,
Can you please pick this one for 4.9, as it is bug fix?
--
Thanks,
Prashanth
next prev parent reply other threads:[~2016-10-13 19:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-13 17:33 [PATCH v2] cpufreq: CPPC: Correct desired_perf calculation Hoan Tran
2016-10-13 19:37 ` Prakash, Prashanth [this message]
2016-10-13 21:12 ` Rafael J. Wysocki
2016-10-13 21:21 ` Hoan Tran
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