drm/i915/i915_deps.c

36 static void i915_deps_reset_fences(struct i915_deps *deps)
38 	if (deps->fences != &deps->single)
39 		kfree(deps->fences);
40 	deps->num_deps = 0;
41 	deps->fences_size = 1;
42 	deps->fences = &deps->single;
47  * @deps: Pointer to the i915_deps structure to initialize.
50 void i915_deps_init(struct i915_deps *deps, gfp_t gfp)
52 	deps->fences = NULL;
53 	deps->gfp = gfp;
54 	i915_deps_reset_fences(deps);
59  * @deps: Pointer to the i915_deps structure to finalize.
64 void i915_deps_fini(struct i915_deps *deps)
68 	for (i = 0; i < deps->num_deps; ++i)
69 		dma_fence_put(deps->fences[i]);
71 	if (deps->fences != &deps->single)
72 		kfree(deps->fences);
75 static int i915_deps_grow(struct i915_deps *deps, struct dma_fence *fence,
80 	if (deps->num_deps >= deps->fences_size) {
81 		unsigned int new_size = 2 * deps->fences_size;
85 		new_fences = kmalloc_array(new_size, sizeof(*new_fences), deps->gfp);
89 		memcpy(new_fences, deps->fences,
90 		       deps->fences_size * sizeof(*new_fences));
91 		swap(new_fences, deps->fences);
92 		if (new_fences != &deps->single)
94 		deps->fences_size = new_size;
96 	deps->fences[deps->num_deps++] = dma_fence_get(fence);
116 	i915_deps_fini(deps);
122  * @deps: Pointer to the i915_deps structure the fences of which to wait for.
132 int i915_deps_sync(const struct i915_deps *deps, const struct ttm_operation_ctx *ctx)
134 	struct dma_fence **fences = deps->fences;
138 	for (i = 0; i < deps->num_deps; ++i, ++fences) {
156  * @deps: Pointer to the i915_deps structure a fence is to be added to.
176 int i915_deps_add_dependency(struct i915_deps *deps,
189 			i915_deps_fini(deps);
193 	for (i = 0; i < deps->num_deps; ++i) {
194 		struct dma_fence *entry = deps->fences[i];
201 			deps->fences[i] = dma_fence_get(fence);
207 	return i915_deps_grow(deps, fence, ctx);
213  * @deps: Pointer to the i915_deps structure a fence is to be added to.
222 int i915_deps_add_resv(struct i915_deps *deps, struct dma_resv *resv,
230 		int ret = i915_deps_add_dependency(deps, fence, ctx);