Chris Wilson writes:
> 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
> ---
> 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 c6000aa47a8d..ea70cb8cf50a 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -2024,6 +2024,7 @@ 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;
> @@ -2047,7 +2048,7 @@ 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(_priv->gpu_error.pending_fb_pin);
>
> @@ -2102,7 +2103,7 @@ intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
> err:
> atomic_dec(_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 11d877b908e2..de14cd78aa0f 100644
> --- a/drivers/gpu/drm/i915/intel_fbdev.c
> +++ b/drivers/gpu/drm/i915/intel_fbdev.c
> @@ -178,8 +178,9 @@ 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;
> @@ -210,7 +211,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
> }
>
> mutex_lock(>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
> @@ -277,7 +278,7 @@ 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(>struct_mutex);
> vga_switcheroo_client_fb_set(pdev, info);
> return 0;
> @@ -285,7 +286,7 @@ 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(>struct_mutex);
> return ret;
> }
> --
> 2.20.1
>
> ___
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> Intel-gfx@lists.freedesktop.org
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