diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-01-01 14:32:48 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2012-01-01 15:24:46 +0000 |
| commit | 1a6c16a24cb74f82df9757c034c50f2cf141523f (patch) | |
| tree | 1fce713bd6a1ed3bbbdef2163c8b70ce9bbc4222 | |
| parent | f008a2a90c632d843f07846426f6d14af728c13b (diff) | |
sna: Keep a freelist of buffers
As reallocation of bo is the most frequent cause of malloc/free.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/kgem.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/sna/kgem.c b/src/sna/kgem.c index 969036ec..7424a8a9 100644 --- a/src/sna/kgem.c +++ b/src/sna/kgem.c @@ -108,6 +108,7 @@ struct kgem_partial_bo { uint32_t write : 1; }; +static struct kgem_bo *__kgem_freed_bo; static struct drm_i915_gem_exec_object2 _kgem_dummy_exec; static void kgem_sna_reset(struct kgem *kgem) @@ -381,9 +382,14 @@ static struct kgem_bo *__kgem_bo_alloc(int handle, int size) { struct kgem_bo *bo; - bo = malloc(sizeof(*bo)); - if (bo == NULL) - return NULL; + if (__kgem_freed_bo) { + bo = __kgem_freed_bo; + __kgem_freed_bo = *(struct kgem_bo **)bo; + } else { + bo = malloc(sizeof(*bo)); + if (bo == NULL) + return NULL; + } return __kgem_bo_init(bo, handle, size); } @@ -747,7 +753,12 @@ static void kgem_bo_free(struct kgem *kgem, struct kgem_bo *bo) _list_del(&bo->list); _list_del(&bo->request); gem_close(kgem->fd, bo->handle); - free(bo); + + if (!bo->io) { + *(struct kgem_bo **)bo = __kgem_freed_bo; + __kgem_freed_bo = bo; + } else + free(bo); } static bool is_mmaped_buffer(struct kgem_partial_bo *bo) |