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authorMika Kuoppala <mika.kuoppala@linux.intel.com>2015-11-17 18:14:26 +0200
committerJani Nikula <jani.nikula@intel.com>2015-11-18 11:22:07 +0200
commit0f94592efd36213c961145fe1ab0c3bc323ec053 (patch)
treec75b48bf7ab42ac42f73d976a76cf0a417d70d04 /drivers/gpu/drm/i915
parent76dc3769d7c3cdcfa7c4c7768a7cb87cd91af12f (diff)
downloadlinux-0f94592efd36213c961145fe1ab0c3bc323ec053.tar.bz2
drm/i915: Fix gpu frequency change tracing
With gen < 9 we have had always 50Mhz units as our hw ratio. With gen >= 9 the hw ratio changed to 16.667Mhz (50/3). The result was that our gpu frequency tracing started to output values 3 times larger than expected due to hardcoded scaling value. Fix this by using Use intel_gpu_freq() when generating Mhz value from ratio for 'intel_gpu_freq_change' trace event. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92591 Cc: stable@vger.kernel.org # v4.3+ Reported-by: Eero Tamminen <eero.t.tamminen@intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1447776866-29384-1-git-send-email-mika.kuoppala@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915')
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 7b47da805685..071a76b9ac52 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4449,7 +4449,7 @@ static void gen6_set_rps(struct drm_device *dev, u8 val)
POSTING_READ(GEN6_RPNSWREQ);
dev_priv->rps.cur_freq = val;
- trace_intel_gpu_freq_change(val * 50);
+ trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val));
}
static void valleyview_set_rps(struct drm_device *dev, u8 val)