zink: add ZINK_DEBUG=map

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21425>

docs/drivers/zink.rst

@@ -295,6 +295,8 @@ variable:
     Enable renderpass optimizations (for tiling GPUs)
   ``norp``
     Disable renderpass optimizations (for tiling GPUs)
+  ``map``
+    Print info about mapped VRAM
 
 Vulkan Validation Layers
 ^^^^^^^^^^^^^^^^^^^^^^^^

src/gallium/drivers/zink/zink_bo.c

@@ -702,6 +702,10 @@ zink_bo_map(struct zink_screen *screen, struct zink_bo *bo)
             simple_mtx_unlock(&real->lock);
             return NULL;
          }
+         if (unlikely(zink_debug & ZINK_DEBUG_MAP)) {
+            p_atomic_add(&screen->mapped_vram, real->base.size);
+            mesa_loge("NEW MAP(%"PRIu64") TOTAL(%"PRIu64")", real->base.size, screen->mapped_vram);
+         }
          p_atomic_set(&real->u.real.cpu_ptr, cpu);
       }
       simple_mtx_unlock(&real->lock);
@@ -720,6 +724,10 @@ zink_bo_unmap(struct zink_screen *screen, struct zink_bo *bo)
 
    if (p_atomic_dec_zero(&real->u.real.map_count)) {
       p_atomic_set(&real->u.real.cpu_ptr, NULL);
+      if (unlikely(zink_debug & ZINK_DEBUG_MAP)) {
+         p_atomic_add(&screen->mapped_vram, -real->base.size);
+         mesa_loge("UNMAP(%"PRIu64") TOTAL(%"PRIu64")", real->base.size, screen->mapped_vram);
+      }
       VKSCR(UnmapMemory)(screen->dev, real->mem);
    }
 }

src/gallium/drivers/zink/zink_screen.c

@@ -84,6 +84,7 @@ zink_debug_options[] = {
    { "shaderdb", ZINK_DEBUG_SHADERDB, "Do stuff to make shader-db work" },
    { "rp", ZINK_DEBUG_RP, "Enable renderpass tracking/optimizations" },
    { "norp", ZINK_DEBUG_NORP, "Disable renderpass tracking/optimizations" },
+   { "map", ZINK_DEBUG_MAP, "Track amount of mapped VRAM" },
    DEBUG_NAMED_VALUE_END
 };
 

src/gallium/drivers/zink/zink_types.h

@@ -219,6 +219,7 @@ enum zink_debug {
    ZINK_DEBUG_SHADERDB = (1<<8),
    ZINK_DEBUG_RP = (1<<9),
    ZINK_DEBUG_NORP = (1<<10),
+   ZINK_DEBUG_MAP = (1<<11),
 };
 
 
@@ -1319,6 +1320,7 @@ struct zink_screen {
    uint64_t total_video_mem;
    uint64_t clamp_video_mem;
    uint64_t total_mem;
+   uint64_t mapped_vram;
 
    VkInstance instance;
    struct zink_instance_info instance_info;