[PATCH 59/66] drm/i915: Pass ctx directly to switch/hangstat

[ben at bwidawsk.net (Ben Widawsky)]

We have all the info earlier now, so we may as well avoid the excess
lookup.

Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_drv.h            |  5 ++---
 drivers/gpu/drm/i915/i915_gem.c            |  2 +-
 drivers/gpu/drm/i915/i915_gem_context.c    | 21 ++-------------------
 drivers/gpu/drm/i915/i915_gem_execbuffer.c |  5 ++---
 4 files changed, 7 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 3b452f2..736c714 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1897,7 +1897,7 @@ int i915_gem_context_enable(struct drm_i915_private *dev_priv);
 int i915_gem_context_open(struct drm_device *dev, struct drm_file *file);
 void i915_gem_context_close(struct drm_device *dev, struct drm_file *file);
 int i915_switch_context(struct intel_ring_buffer *ring,
-			struct drm_file *file, int to_id);
+			struct i915_hw_context *to);
 void i915_gem_context_free(struct kref *ctx_ref);
 static inline void i915_gem_context_reference(struct i915_hw_context *ctx)
 {
@@ -1913,8 +1913,7 @@ struct i915_hw_context *
 i915_gem_context_get(struct drm_i915_file_private *file_priv, u32 id);
 struct i915_ctx_hang_stats * __must_check
 i915_gem_context_get_hang_stats(struct intel_ring_buffer *ring,
-				struct drm_file *file,
-				u32 id);
+				struct i915_hw_context *to);
 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
 				  struct drm_file *file);
 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e58584b..73e116e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2709,7 +2709,7 @@ int i915_gpu_idle(struct drm_device *dev)
 
 	/* Flush everything onto the inactive list. */
 	for_each_ring(ring, dev_priv, i) {
-		ret = i915_switch_context(ring, NULL, DEFAULT_CONTEXT_ID);
+		ret = i915_switch_context(ring, ring->default_context);
 		if (ret)
 			return ret;
 
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 2975ca0..37ebfa2 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -400,12 +400,9 @@ static int context_idr_cleanup(int id, void *p, void *data)
 
 struct i915_ctx_hang_stats *
 i915_gem_context_get_hang_stats(struct intel_ring_buffer *ring,
-				struct drm_file *file,
-				u32 id)
+				struct i915_hw_context *to)
 {
 	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);
@@ -413,13 +410,6 @@ i915_gem_context_get_hang_stats(struct intel_ring_buffer *ring,
 	if (ring->id != RCS)
 		return ERR_PTR(-EINVAL);
 
-	if (file == NULL)
-		return ERR_PTR(-EINVAL);
-
-	if (id == DEFAULT_CONTEXT_ID)
-		return &file_priv->private_default_ctx->hang_stats;
-
-	to = i915_gem_context_get(file->driver_priv, id);
 	if (to == NULL)
 		return ERR_PTR(-ENOENT);
 
@@ -633,22 +623,15 @@ done:
  * object while letting the normal object tracking destroy the backing BO.
  */
 int i915_switch_context(struct intel_ring_buffer *ring,
-			struct drm_file *file,
-			int to_id)
+			struct i915_hw_context *to)
 {
 	struct drm_i915_private *dev_priv = ring->dev->dev_private;
-	struct i915_hw_context *to;
 
 	if (dev_priv->hw_contexts_disabled)
 		return 0;
 
 	WARN_ON(!mutex_is_locked(&dev_priv->dev->struct_mutex));
 
-	if (file == NULL)
-		to = ring->default_context;
-	else
-		to = i915_gem_context_get(file->driver_priv, to_id);
-
 	if (to == NULL)
 		return -ENOENT;
 
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 3eda4e1..aeec8c0 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1049,8 +1049,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
 	if (ret)
 		goto err;
 
-	hs = i915_gem_context_get_hang_stats(&dev_priv->ring[RCS],
-					     file, ctx_id);
+	hs = i915_gem_context_get_hang_stats(&dev_priv->ring[RCS], ctx);
 	if (IS_ERR(hs)) {
 		ret = PTR_ERR(hs);
 		goto err;
@@ -1061,7 +1060,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
 		goto err;
 	}
 
-	ret = i915_switch_context(ring, file, ctx_id);
+	ret = i915_switch_context(ring, ctx);
 	if (ret)
 		goto err;
 
-- 
1.8.3.1