From 1d264d91befc3131e68edc225fa49acb2f315f73 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 14 Jan 2019 14:21:19 +0000 Subject: [PATCH] drm/i915/fb: Track rpm wakerefs Keep track of the rpm wakeref used for framebuffer access so that we can cancel upon release and so more clearly identify leaks. Signed-off-by: Chris Wilson Cc: Jani Nikula Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-11-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_display.c | 5 +++-- drivers/gpu/drm/i915/intel_fbdev.c | 9 +++++---- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a980d5d1e601..b0b8f9ffd873 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2023,6 +2023,7 @@ intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, struct drm_device *dev = fb->dev; struct drm_i915_private *dev_priv = to_i915(dev); struct drm_i915_gem_object *obj = intel_fb_obj(fb); + intel_wakeref_t wakeref; struct i915_vma *vma; unsigned int pinctl; u32 alignment; @@ -2046,7 +2047,7 @@ intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, * intel_runtime_pm_put(), so it is correct to wrap only the * pin/unpin/fence and not more. */ - intel_runtime_pm_get(dev_priv); + wakeref = intel_runtime_pm_get(dev_priv); atomic_inc(&dev_priv->gpu_error.pending_fb_pin); @@ -2101,7 +2102,7 @@ intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, err: atomic_dec(&dev_priv->gpu_error.pending_fb_pin); - intel_runtime_pm_put_unchecked(dev_priv); + intel_runtime_pm_put(dev_priv, wakeref); return vma; } diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index 215e5894842d..3036d835bc2b 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -177,8 +177,9 @@ static int intelfb_create(struct drm_fb_helper *helper, const struct i915_ggtt_view view = { .type = I915_GGTT_VIEW_NORMAL, }; - struct fb_info *info; struct drm_framebuffer *fb; + intel_wakeref_t wakeref; + struct fb_info *info; struct i915_vma *vma; unsigned long flags = 0; bool prealloc = false; @@ -209,7 +210,7 @@ static int intelfb_create(struct drm_fb_helper *helper, } mutex_lock(&dev->struct_mutex); - intel_runtime_pm_get(dev_priv); + wakeref = intel_runtime_pm_get(dev_priv); /* Pin the GGTT vma for our access via info->screen_base. * This also validates that any existing fb inherited from the @@ -276,7 +277,7 @@ static int intelfb_create(struct drm_fb_helper *helper, ifbdev->vma = vma; ifbdev->vma_flags = flags; - intel_runtime_pm_put_unchecked(dev_priv); + intel_runtime_pm_put(dev_priv, wakeref); mutex_unlock(&dev->struct_mutex); vga_switcheroo_client_fb_set(pdev, info); return 0; @@ -284,7 +285,7 @@ static int intelfb_create(struct drm_fb_helper *helper, out_unpin: intel_unpin_fb_vma(vma, flags); out_unlock: - intel_runtime_pm_put_unchecked(dev_priv); + intel_runtime_pm_put(dev_priv, wakeref); mutex_unlock(&dev->struct_mutex); return ret; } -- 2.30.2