X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fvc4%2Fvc4_bufmgr.h;h=9fa4774427e63eafd20ef783176d448f02f3467a;hb=e0c6135625e1a2e2dc21a4e1472acb331af043cc;hp=4e7b23e0862477b1c45c1bf18aa4232f47fd96af;hpb=a8fd58eae59607ac42eaa7187b0d9e6c51b83af9;p=mesa.git

diff --git a/src/gallium/drivers/vc4/vc4_bufmgr.h b/src/gallium/drivers/vc4/vc4_bufmgr.h
index 4e7b23e0862..9fa4774427e 100644
--- a/src/gallium/drivers/vc4/vc4_bufmgr.h
+++ b/src/gallium/drivers/vc4/vc4_bufmgr.h
@@ -39,6 +39,14 @@ struct vc4_bo {
         uint32_t handle;
         uint32_t size;
 
+        /* This will be read/written by multiple threads without a lock -- you
+         * should take a snapshot and use it to see if you happen to be in the
+         * CL's handles at this position, to make most lookups O(1).  It's
+         * volatile to make sure that the compiler doesn't emit multiple loads
+         * from the address, which would make the lookup racy.
+         */
+        volatile uint32_t last_hindex;
+
         /** Entry in the linked list of buffers freed, by age. */
         struct list_head time_list;
         /** Entry in the per-page-count linked list of buffers freed (by age). */
@@ -65,18 +73,13 @@ struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd,
 bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
 int vc4_bo_get_dmabuf(struct vc4_bo *bo);
 
-static inline void
-vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
-{
-        if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
-                vc4_bo_last_unreference(*old_bo);
-        *old_bo = new_bo;
-}
-
+void vc4_bo_debug_describe(char* buf, const struct vc4_bo *ptr);
 static inline struct vc4_bo *
 vc4_bo_reference(struct vc4_bo *bo)
 {
-        pipe_reference(NULL, &bo->reference);
+        pipe_reference_described(NULL, &bo->reference,
+                                 (debug_reference_descriptor)
+                                 vc4_bo_debug_describe);
         return bo;
 }
 
@@ -89,13 +92,18 @@ vc4_bo_unreference(struct vc4_bo **bo)
 
         if ((*bo)->private) {
                 /* Avoid the mutex for private BOs */
-                if (pipe_reference(&(*bo)->reference, NULL))
+                if (pipe_reference_described(&(*bo)->reference, NULL,
+                                             (debug_reference_descriptor)
+                                             vc4_bo_debug_describe)) {
                         vc4_bo_last_unreference(*bo);
+                }
         } else {
                 screen = (*bo)->screen;
                 mtx_lock(&screen->bo_handles_mutex);
 
-                if (pipe_reference(&(*bo)->reference, NULL)) {
+                if (pipe_reference_described(&(*bo)->reference, NULL,
+                                             (debug_reference_descriptor)
+                                             vc4_bo_debug_describe)) {
                         util_hash_table_remove(screen->bo_handles,
                                                (void *)(uintptr_t)(*bo)->handle);
                         vc4_bo_last_unreference(*bo);
@@ -113,8 +121,11 @@ vc4_bo_unreference_locked_timed(struct vc4_bo **bo, time_t time)
         if (!*bo)
                 return;
 
-        if (pipe_reference(&(*bo)->reference, NULL))
+        if (pipe_reference_described(&(*bo)->reference, NULL,
+                                     (debug_reference_descriptor)
+                                     vc4_bo_debug_describe)) {
                 vc4_bo_last_unreference_locked_timed(*bo, time);
+        }
         *bo = NULL;
 }