From 5ffd494b8e88250d922db91037b4df676cb679a2 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Wed, 11 Sep 2013 13:43:20 -0700 Subject: [PATCH] drm/i915/vlv: disable rc6p and rc6pp residency reporting on BYT Byt doesn't have rc6p and rc6pp support and even more important the the offsets of the residency registers there's something else. So Just return a constant 0 to avoid upsetting userspace tools like powertop. Signed-off-by: Jesse Barnes [danvet: Explain a bit in the commit message what's going on.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_sysfs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 7b4c79c..176de44 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -65,6 +65,8 @@ show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf) { struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); u32 rc6p_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6p); + if (IS_VALLEYVIEW(dminor->dev)) + rc6p_residency = 0; return snprintf(buf, PAGE_SIZE, "%u\n", rc6p_residency); } @@ -73,6 +75,8 @@ show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf) { struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); u32 rc6pp_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6pp); + if (IS_VALLEYVIEW(dminor->dev)) + rc6pp_residency = 0; return snprintf(buf, PAGE_SIZE, "%u\n", rc6pp_residency); } -- 2.7.4