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authorThomas Hellstrom <thellstrom@vmware.com>2009-12-02 18:33:45 +0100
committerDave Airlie <airlied@redhat.com>2009-12-16 15:34:36 +1000
commitaaa207369436d04bb85382ddbb688a5b9461fd21 (patch)
tree7d1b013bda999a1c122b7ba067075ef164e168b0 /drivers
parentb663752627e7c6b4bc414684d71c6adce5719fce (diff)
drm/ttm: Delayed delete fixes.
1) Remove from lru before reserving so we avoid competing with evicting processes. 2) Avoid calling kref_put() on bo::list_kref while spinlocked. 3) Additional refcounting bug-checking. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 4cd4007e68f..7927fe99d01 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -465,6 +465,8 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all)
spin_unlock(&bo->lock);
spin_lock(&glob->lru_lock);
+ put_count = ttm_bo_del_from_lru(bo);
+
ret = ttm_bo_reserve_locked(bo, false, false, false, 0);
BUG_ON(ret);
if (bo->ttm)
@@ -472,20 +474,19 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all)
if (!list_empty(&bo->ddestroy)) {
list_del_init(&bo->ddestroy);
- kref_put(&bo->list_kref, ttm_bo_ref_bug);
+ ++put_count;
}
if (bo->mem.mm_node) {
bo->mem.mm_node->private = NULL;
drm_mm_put_block(bo->mem.mm_node);
bo->mem.mm_node = NULL;
}
- put_count = ttm_bo_del_from_lru(bo);
spin_unlock(&glob->lru_lock);
atomic_set(&bo->reserved, 0);
while (put_count--)
- kref_put(&bo->list_kref, ttm_bo_release_list);
+ kref_put(&bo->list_kref, ttm_bo_ref_bug);
return 0;
}