Esempi in C++ (Cpp) per drm_ht_find_item_rcu

Esempio n. 1

File: ttm_object.c Progetto: BozkurTR/kernel

struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
					       uint32_t key)
{
	struct ttm_object_device *tdev = tfile->tdev;
	struct ttm_base_object *uninitialized_var(base);
	struct drm_hash_item *hash;
	int ret;

	rcu_read_lock();
	ret = drm_ht_find_item_rcu(&tdev->object_hash, key, &hash);

	if (likely(ret == 0)) {
		base = drm_hash_entry(hash, struct ttm_base_object, hash);
		ret = kref_get_unless_zero(&base->refcount) ? 0 : -EINVAL;
	}

Esempio n. 2

File: ttm_object.c Progetto: CenturyGlorion/linux

struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile,
					       uint32_t key)
{
	struct ttm_base_object *base = NULL;
	struct drm_hash_item *hash;
	struct drm_open_hash *ht = &tfile->ref_hash[TTM_REF_USAGE];
	int ret;

	rcu_read_lock();
	ret = drm_ht_find_item_rcu(ht, key, &hash);

	if (likely(ret == 0)) {
		base = drm_hash_entry(hash, struct ttm_ref_object, hash)->obj;
		if (!kref_get_unless_zero(&base->refcount))
			base = NULL;
	}