From: dirk.brandewie@gmail.com

To: linux-kernel@vger.kernel.org, cpufreq@vger.kernel.org

Cc: Dirk Brandewie <dirk.brandewie@gmail.com>,

        Dirk Brandewie <dirk.j.brandewie@intel.com>

Subject: [PATCH] cpufreq/intel_pstate: Fix calculation of current frequency

Date:	Fri, 22 Mar 2013 10:51:05 -0700

Message-Id: <1363974665-22049-1-git-send-email-dirk.brandewie@gmail.com>

From: Dirk Brandewie <dirk.brandewie@gmail.com>

Use the correct pstate value to calculate the effective frequency.

https://bugzilla.redhat.com/show_bug.cgi?id=923942

Reported-by: Satish Balay <balay@fastmail.fm>

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>

---

 drivers/cpufreq/intel_pstate.c |    2 +-

 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c

index e84af66..ad72922 100644

--- a/drivers/cpufreq/intel_pstate.c

+++ b/drivers/cpufreq/intel_pstate.c

@@ -454,7 +454,7 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu,

 					sample->idletime_us * 100,

 					sample->duration_us);

 	core_pct = div64_u64(sample->aperf * 100, sample->mperf);

-	sample->freq = cpu->pstate.turbo_pstate * core_pct * 1000;

+	sample->freq = cpu->pstate.max_pstate * core_pct * 1000;

 	sample->core_pct_busy = div_s64((sample->pstate_pct_busy * core_pct),

 					100);

-- 

1.7.7.6

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