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authorMarek Olšák <[email protected]>2017-01-17 20:10:15 +0100
committerMarek Olšák <[email protected]>2017-01-18 19:51:31 +0100
commit4bde7d3d3c90e3930e56b83f8e517d6ce6ea26d4 (patch)
tree56e29d9ceffa045f8edebcaffbb9ee1be7d3eb1b /src/gallium/drivers/radeonsi
parentd93b0eacb7ea1596331e31826a6bd749b97b96b0 (diff)
radeonsi: skip an unnecessary mutex lock for L2 prefetches
the mutex lock is inside util_range_add. Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src/gallium/drivers/radeonsi')
-rw-r--r--src/gallium/drivers/radeonsi/si_cp_dma.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/src/gallium/drivers/radeonsi/si_cp_dma.c b/src/gallium/drivers/radeonsi/si_cp_dma.c
index 06e4899a887..582e5995164 100644
--- a/src/gallium/drivers/radeonsi/si_cp_dma.c
+++ b/src/gallium/drivers/radeonsi/si_cp_dma.c
@@ -315,11 +315,13 @@ void si_copy_buffer(struct si_context *sctx,
if (!size)
return;
- /* Mark the buffer range of destination as valid (initialized),
- * so that transfer_map knows it should wait for the GPU when mapping
- * that range. */
- util_range_add(&r600_resource(dst)->valid_buffer_range, dst_offset,
- dst_offset + size);
+ if (dst != src || dst_offset != src_offset) {
+ /* Mark the buffer range of destination as valid (initialized),
+ * so that transfer_map knows it should wait for the GPU when mapping
+ * that range. */
+ util_range_add(&r600_resource(dst)->valid_buffer_range, dst_offset,
+ dst_offset + size);
+ }
dst_offset += r600_resource(dst)->gpu_address;
src_offset += r600_resource(src)->gpu_address;