diff options
| author | Thomas Hellstrom <thellstrom@vmware.com> | 2012-11-06 11:31:48 +0000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-11-20 16:14:58 +1000 |
| commit | d7144556195ab04a148e722a93103da5438bdf78 (patch) | |
| tree | ee152765fe715eedd06d79c647ac3d4ffba34469 | |
| parent | dedfdffd448aea2543b59fd504b92b8212ab3b7d (diff) | |
drm: Make hashtab rcu-safe
TTM base objects will be the first consumer.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/drm_hashtab.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/gpu/drm/drm_hashtab.c b/drivers/gpu/drm/drm_hashtab.c index c3745c4d46d8..5729e390aa4e 100644 --- a/drivers/gpu/drm/drm_hashtab.c +++ b/drivers/gpu/drm/drm_hashtab.c @@ -67,10 +67,8 @@ void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key) hashed_key = hash_long(key, ht->order); DRM_DEBUG("Key is 0x%08lx, Hashed key is 0x%08x\n", key, hashed_key); h_list = &ht->table[hashed_key]; - hlist_for_each(list, h_list) { - entry = hlist_entry(list, struct drm_hash_item, head); + hlist_for_each_entry_rcu(entry, list, h_list, head) DRM_DEBUG("count %d, key: 0x%08lx\n", count++, entry->key); - } } static struct hlist_node *drm_ht_find_key(struct drm_open_hash *ht, @@ -83,8 +81,7 @@ static struct hlist_node *drm_ht_find_key(struct drm_open_hash *ht, hashed_key = hash_long(key, ht->order); h_list = &ht->table[hashed_key]; - hlist_for_each(list, h_list) { - entry = hlist_entry(list, struct drm_hash_item, head); + hlist_for_each_entry_rcu(entry, list, h_list, head) { if (entry->key == key) return list; if (entry->key > key) @@ -105,8 +102,7 @@ int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item) hashed_key = hash_long(key, ht->order); h_list = &ht->table[hashed_key]; parent = NULL; - hlist_for_each(list, h_list) { - entry = hlist_entry(list, struct drm_hash_item, head); + hlist_for_each_entry_rcu(entry, list, h_list, head) { if (entry->key == key) return -EINVAL; if (entry->key > key) @@ -114,9 +110,9 @@ int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item) parent = list; } if (parent) { - hlist_add_after(parent, &item->head); + hlist_add_after_rcu(parent, &item->head); } else { - hlist_add_head(&item->head, h_list); + hlist_add_head_rcu(&item->head, h_list); } return 0; } @@ -171,7 +167,7 @@ int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key) list = drm_ht_find_key(ht, key); if (list) { - hlist_del_init(list); + hlist_del_init_rcu(list); return 0; } return -EINVAL; @@ -179,7 +175,7 @@ int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key) int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item) { - hlist_del_init(&item->head); + hlist_del_init_rcu(&item->head); return 0; } EXPORT_SYMBOL(drm_ht_remove_item); |