lima: implement BO cache

Allocating BOs is expensive, so we should avoid doing that by caching
freed BOs.

BO cache is modelled after one in v3d driver and works as follows:

- in lima_bo_create() check if we have matching BO in cache and return
  it if there's one, allocate new BO otherwise.
- in lima_bo_unreference() (renamed from lima_bo_free()): put BO in
  cache instead of freeing it and remove all stale BOs from cache

Reviewed-by: Qiang Yu <[email protected]>
Signed-off-by: Vasily Khoruzhick <[email protected]>

1 files changed, 9 insertions, 1 deletions

diff --git a/src/gallium/drivers/lima/lima_bo.h b/src/gallium/drivers/lima/lima_bo.h
index 3f440b3b014..7bbd0063602 100644
--- a/src/gallium/drivers/lima/lima_bo.h
+++ b/src/gallium/drivers/lima/lima_bo.h
@@ -28,12 +28,18 @@
 #include <stdint.h>
 
 #include "util/u_atomic.h"
+#include "util/list.h"
 
 struct lima_bo {
    struct lima_screen *screen;
+   struct list_head time_list;
+   struct list_head size_list;
    int refcnt;
+   bool cacheable;
+   time_t free_time;
 
    uint32_t size;
+   uint32_t flags;
    uint32_t handle;
    uint64_t offset;
    uint32_t flink_name;
@@ -44,10 +50,12 @@ struct lima_bo {
 
 bool lima_bo_table_init(struct lima_screen *screen);
 void lima_bo_table_fini(struct lima_screen *screen);
+bool lima_bo_cache_init(struct lima_screen *screen);
+void lima_bo_cache_fini(struct lima_screen *screen);
 
 struct lima_bo *lima_bo_create(struct lima_screen *screen, uint32_t size,
                                uint32_t flags);
-void lima_bo_free(struct lima_bo *bo);
+void lima_bo_unreference(struct lima_bo *bo);
 
 static inline void lima_bo_reference(struct lima_bo *bo)
 {