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Fix calculation of current frequency in intel_pstate driver. (rhbz 923942)

This commit is contained in:
Dave Jones 2013-03-22 15:03:56 -04:00
parent 32241a4d57
commit 7dd3fc397e
2 changed files with 47 additions and 0 deletions
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42
cpufreq-intel-pstate-max-is-in-the-max-variable-who-knew.patch Normal file
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@ -0,0 +1,42 @@
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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5
kernel.spec
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@ -753,6 +753,7 @@ Patch22010: debug-idle-sched-warn-once.patch
Patch22001: selinux-apply-different-permission-to-ptrace-child.patch
Patch23000: cpufreq-intel-pstate-validate-msrs.patch
Patch23001: cpufreq-intel-pstate-max-is-in-the-max-variable-who-knew.patch
# END OF PATCH DEFINITIONS
@ -1422,6 +1423,7 @@ ApplyPatch selinux-apply-different-permission-to-ptrace-child.patch
# rhbz 922923
ApplyPatch cpufreq-intel-pstate-validate-msrs.patch
ApplyPatch cpufreq-intel-pstate-max-is-in-the-max-variable-who-knew.patch
#rhbz 859485
ApplyPatch vt-Drop-K_OFF-for-VC_MUTE.patch
@ -2283,6 +2285,9 @@ fi
# and build.
%changelog
* Fri Mar 22 2013 Dave Jones <davej@redhat.com>
- Fix calculation of current frequency in intel_pstate driver. (rhbz 923942)
* Thu Mar 21 2013 Dave Jones <davej@redhat.com> - 3.9.0-0.rc3.git1.2
- Only print "bad: scheduling from the idle thread" warning once.