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authorChris Wilson <chris@chris-wilson.co.uk>2010-10-28 21:28:46 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2010-10-28 21:31:19 +0100
commit395b70be54bed5fdf6c4173c78e8a49f960f241d (patch)
treeb9ba0a69fdacb2808d093a436a53ceab51619c5a
parent8f28f54aad8bcf52a47afb6447fac34f96597b6f (diff)
drm/i915: Flush read-only buffers from the active list upon idle as well
It is possible for the active list to only contain a read-only buffer so that the ring->gpu_write_list remains entry. This leads to an inconsistency between i915_gpu_is_active() and i915_gpu_idle() causing an infinite spin during the shrinker and an assertion failure that i915_gpu_idle() does indeed flush all buffers from the active lists. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c10
-rw-r--r--drivers/gpu/drm/i915/i915_gem_evict.c8
2 files changed, 5 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 8eb8453208b..469a5b1a48a 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2172,7 +2172,7 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
static int i915_ring_idle(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
- if (list_empty(&ring->gpu_write_list))
+ if (list_empty(&ring->gpu_write_list) && list_empty(&ring->active_list))
return 0;
i915_gem_flush_ring(dev, NULL, ring,
@@ -2190,9 +2190,7 @@ i915_gpu_idle(struct drm_device *dev)
int ret;
lists_empty = (list_empty(&dev_priv->mm.flushing_list) &&
- list_empty(&dev_priv->render_ring.active_list) &&
- list_empty(&dev_priv->bsd_ring.active_list) &&
- list_empty(&dev_priv->blt_ring.active_list));
+ list_empty(&dev_priv->mm.active_list));
if (lists_empty)
return 0;
@@ -4900,9 +4898,7 @@ i915_gpu_is_active(struct drm_device *dev)
int lists_empty;
lists_empty = list_empty(&dev_priv->mm.flushing_list) &&
- list_empty(&dev_priv->render_ring.active_list) &&
- list_empty(&dev_priv->bsd_ring.active_list) &&
- list_empty(&dev_priv->blt_ring.active_list);
+ list_empty(&dev_priv->mm.active_list);
return !lists_empty;
}
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index 43a4013f53f..d8ae7d1d0cc 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -165,9 +165,7 @@ i915_gem_evict_everything(struct drm_device *dev)
lists_empty = (list_empty(&dev_priv->mm.inactive_list) &&
list_empty(&dev_priv->mm.flushing_list) &&
- list_empty(&dev_priv->render_ring.active_list) &&
- list_empty(&dev_priv->bsd_ring.active_list) &&
- list_empty(&dev_priv->blt_ring.active_list));
+ list_empty(&dev_priv->mm.active_list));
if (lists_empty)
return -ENOSPC;
@@ -184,9 +182,7 @@ i915_gem_evict_everything(struct drm_device *dev)
lists_empty = (list_empty(&dev_priv->mm.inactive_list) &&
list_empty(&dev_priv->mm.flushing_list) &&
- list_empty(&dev_priv->render_ring.active_list) &&
- list_empty(&dev_priv->bsd_ring.active_list) &&
- list_empty(&dev_priv->blt_ring.active_list));
+ list_empty(&dev_priv->mm.active_list));
BUG_ON(!lists_empty);
return 0;