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>
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 39bcc08..f5ea3c1 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -303,6 +303,34 @@
return 0;
}
+struct i915_ctx_hang_stats *
+i915_gem_context_get_hang_stats(struct intel_ring_buffer *ring,
+ struct drm_file *file,
+ u32 id)
+{
+ struct drm_i915_private *dev_priv = ring->dev->dev_private;
+ struct drm_i915_file_private *file_priv = file->driver_priv;
+ struct i915_hw_context *to;
+
+ if (dev_priv->hw_contexts_disabled)
+ return ERR_PTR(-ENOENT);
+
+ if (ring->id != RCS)
+ return ERR_PTR(-EINVAL);
+
+ if (file == NULL)
+ return ERR_PTR(-EINVAL);
+
+ if (id == DEFAULT_CONTEXT_ID)
+ return &file_priv->hang_stats;
+
+ to = i915_gem_context_get(file->driver_priv, id);
+ if (to == NULL)
+ return ERR_PTR(-ENOENT);
+
+ return &to->hang_stats;
+}
+
void i915_gem_context_close(struct drm_device *dev, struct drm_file *file)
{
struct drm_i915_file_private *file_priv = file->driver_priv;