drm/i915: add i915_gem_context_get_hang_stats()
To get context hang statistics for specified context, add i915_gem_context_get_hang_stats(). For arb-robustness, every context needs to have its own hang statistics tracking. Added function will return the user specified context statistics or in case of default context, statistics from drm_i915_file_private. v2: handle default context inside get_reset_state v3: return struct pointer instead of passing it in as param (Chris Wilson) Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -1812,6 +1812,10 @@ static inline void i915_gem_context_unreference(struct i915_hw_context *ctx)
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kref_put(&ctx->ref, i915_gem_context_free);
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}
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struct i915_ctx_hang_stats * __must_check
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i915_gem_context_get_hang_stats(struct intel_ring_buffer *ring,
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struct drm_file *file,
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u32 id);
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int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file);
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int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
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@ -303,6 +303,34 @@ static int context_idr_cleanup(int id, void *p, void *data)
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return 0;
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}
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struct i915_ctx_hang_stats *
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i915_gem_context_get_hang_stats(struct intel_ring_buffer *ring,
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struct drm_file *file,
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u32 id)
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{
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struct drm_i915_private *dev_priv = ring->dev->dev_private;
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struct drm_i915_file_private *file_priv = file->driver_priv;
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struct i915_hw_context *to;
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if (dev_priv->hw_contexts_disabled)
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return ERR_PTR(-ENOENT);
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if (ring->id != RCS)
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return ERR_PTR(-EINVAL);
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if (file == NULL)
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return ERR_PTR(-EINVAL);
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if (id == DEFAULT_CONTEXT_ID)
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return &file_priv->hang_stats;
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to = i915_gem_context_get(file->driver_priv, id);
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if (to == NULL)
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return ERR_PTR(-ENOENT);
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return &to->hang_stats;
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}
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void i915_gem_context_close(struct drm_device *dev, struct drm_file *file)
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{
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struct drm_i915_file_private *file_priv = file->driver_priv;
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