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-rw-r--r--src/gallium/drivers/panfrost/pan_allocate.c21
-rw-r--r--src/gallium/drivers/panfrost/pan_job.c8
2 files changed, 26 insertions, 3 deletions
diff --git a/src/gallium/drivers/panfrost/pan_allocate.c b/src/gallium/drivers/panfrost/pan_allocate.c
index 4febb001033..a0a96c15b94 100644
--- a/src/gallium/drivers/panfrost/pan_allocate.c
+++ b/src/gallium/drivers/panfrost/pan_allocate.c
@@ -97,12 +97,27 @@ panfrost_allocate_transient(struct panfrost_context *ctx, size_t sz)
bool update_offset = false;
if (sz < TRANSIENT_SLAB_SIZE) {
- /* TODO: Lookup free */
-
+ /* First, look for a free slot */
+ unsigned count = util_dynarray_num_elements(&screen->transient_bo, void *);
unsigned index = 0;
- if (!bo)
+ unsigned free = __bitset_ffs(
+ screen->free_transient,
+ count / BITSET_WORDBITS);
+
+ if (likely(free)) {
+ /* Use this one */
+ index = free - 1;
+
+ /* It's ours, so no longer free */
+ BITSET_CLEAR(screen->free_transient, index);
+
+ /* Grab the BO */
+ bo = pan_bo_for_index(screen, index);
+ } else {
+ /* Otherwise, create a new BO */
bo = panfrost_create_slab(screen, &index);
+ }
/* Remember we created this */
util_dynarray_append(&batch->transient_indices, unsigned, index);
diff --git a/src/gallium/drivers/panfrost/pan_job.c b/src/gallium/drivers/panfrost/pan_job.c
index a802030769f..0faefe2157a 100644
--- a/src/gallium/drivers/panfrost/pan_job.c
+++ b/src/gallium/drivers/panfrost/pan_job.c
@@ -61,6 +61,14 @@ panfrost_free_job(struct panfrost_context *ctx, struct panfrost_job *job)
panfrost_bo_unreference(ctx->base.screen, bo);
}
+ /* Free up the transient BOs we're sitting on */
+ struct panfrost_screen *screen = pan_screen(ctx->base.screen);
+
+ util_dynarray_foreach(&job->transient_indices, unsigned, index) {
+ /* Mark it free */
+ BITSET_SET(screen->free_transient, *index);
+ }
+
_mesa_hash_table_remove_key(ctx->jobs, &job->key);
if (ctx->job == job)