panfrost: Drop redundant NULL check
[mesa.git] / src / gallium / drivers / vc4 / vc4_bufmgr.c
index 0653f882323225e95b7c4b776e74849bd9778804..a786e8ee939ad354320a01b1243f233d26f3ee07 100644 (file)
 
 #include "util/u_hash_table.h"
 #include "util/u_memory.h"
+#include "util/u_string.h"
 #include "util/ralloc.h"
 
 #include "vc4_context.h"
 #include "vc4_screen.h"
 
-#ifdef HAVE_VALGRIND
-#include <valgrind.h>
-#include <memcheck.h>
-#define VG(x) x
-#else
-#define VG(x)
-#endif
-
 static bool dump_stats = false;
 
 static void
 vc4_bo_cache_free_all(struct vc4_bo_cache *cache);
 
+void
+vc4_bo_debug_describe(char* buf, const struct vc4_bo *ptr)
+{
+   sprintf(buf, "vc4_bo<%s,%u,%u>", ptr->name ? ptr->name : "?",
+                ptr->handle, ptr->size);
+}
+
+void
+vc4_bo_label(struct vc4_screen *screen, struct vc4_bo *bo, const char *fmt, ...)
+{
+        /* Perform BO labeling by default on debug builds (so that you get
+         * whole-system allocation information), or if VC4_DEBUG=surf is set
+         * (for debugging a single app's allocation).
+         */
+#ifndef DEBUG
+        if (!(vc4_debug & VC4_DEBUG_SURFACE))
+                return;
+#endif
+        va_list va;
+        va_start(va, fmt);
+        char *name = ralloc_vasprintf(NULL, fmt, va);
+        va_end(va);
+
+        struct drm_vc4_label_bo label = {
+                .handle = bo->handle,
+                .len = strlen(name),
+                .name = (uintptr_t)name,
+        };
+        vc4_ioctl(screen->fd, DRM_IOCTL_VC4_LABEL_BO, &label);
+
+        ralloc_free(name);
+}
+
 static void
 vc4_bo_dump_stats(struct vc4_screen *screen)
 {
@@ -58,7 +84,7 @@ vc4_bo_dump_stats(struct vc4_screen *screen)
         fprintf(stderr, "  BOs cached:      %d\n", cache->bo_count);
         fprintf(stderr, "  BOs cached size: %dkb\n", cache->bo_size / 1024);
 
-        if (!list_empty(&cache->time_list)) {
+        if (!list_is_empty(&cache->time_list)) {
                 struct vc4_bo *first = LIST_ENTRY(struct vc4_bo,
                                                   cache->time_list.next,
                                                   time_list);
@@ -74,7 +100,7 @@ vc4_bo_dump_stats(struct vc4_screen *screen)
                 struct timespec time;
                 clock_gettime(CLOCK_MONOTONIC, &time);
                 fprintf(stderr, "  now:               %ld\n",
-                        time.tv_sec);
+                        (long)time.tv_sec);
         }
 }
 
@@ -87,34 +113,105 @@ vc4_bo_remove_from_cache(struct vc4_bo_cache *cache, struct vc4_bo *bo)
         cache->bo_size -= bo->size;
 }
 
+static void vc4_bo_purgeable(struct vc4_bo *bo)
+{
+        struct drm_vc4_gem_madvise arg = {
+                .handle = bo->handle,
+                .madv = VC4_MADV_DONTNEED,
+        };
+
+       if (bo->screen->has_madvise)
+               vc4_ioctl(bo->screen->fd, DRM_IOCTL_VC4_GEM_MADVISE, &arg);
+}
+
+static bool vc4_bo_unpurgeable(struct vc4_bo *bo)
+{
+        struct drm_vc4_gem_madvise arg = {
+                .handle = bo->handle,
+                .madv = VC4_MADV_WILLNEED,
+        };
+
+       if (!bo->screen->has_madvise)
+               return true;
+
+       if (vc4_ioctl(bo->screen->fd, DRM_IOCTL_VC4_GEM_MADVISE, &arg))
+               return false;
+
+       return arg.retained;
+}
+
+static void
+vc4_bo_free(struct vc4_bo *bo)
+{
+        struct vc4_screen *screen = bo->screen;
+
+        if (bo->map) {
+                if (using_vc4_simulator && bo->name &&
+                    strcmp(bo->name, "winsys") == 0) {
+                        free(bo->map);
+                } else {
+                        munmap(bo->map, bo->size);
+                        VG(VALGRIND_FREELIKE_BLOCK(bo->map, 0));
+                }
+        }
+
+        struct drm_gem_close c;
+        memset(&c, 0, sizeof(c));
+        c.handle = bo->handle;
+        int ret = vc4_ioctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &c);
+        if (ret != 0)
+                fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno));
+
+        screen->bo_count--;
+        screen->bo_size -= bo->size;
+
+        if (dump_stats) {
+                fprintf(stderr, "Freed %s%s%dkb:\n",
+                        bo->name ? bo->name : "",
+                        bo->name ? " " : "",
+                        bo->size / 1024);
+                vc4_bo_dump_stats(screen);
+        }
+
+        free(bo);
+}
+
 static struct vc4_bo *
 vc4_bo_from_cache(struct vc4_screen *screen, uint32_t size, const char *name)
 {
         struct vc4_bo_cache *cache = &screen->bo_cache;
         uint32_t page_index = size / 4096 - 1;
+        struct vc4_bo *iter, *tmp, *bo = NULL;
 
         if (cache->size_list_size <= page_index)
                 return NULL;
 
-        struct vc4_bo *bo = NULL;
         mtx_lock(&cache->lock);
-        if (!list_empty(&cache->size_list[page_index])) {
-                bo = LIST_ENTRY(struct vc4_bo, cache->size_list[page_index].next,
-                                size_list);
-
-                /* Check that the BO has gone idle.  If not, then we want to
-                 * allocate something new instead, since we assume that the
-                 * user will proceed to CPU map it and fill it with stuff.
+       LIST_FOR_EACH_ENTRY_SAFE(iter, tmp, &cache->size_list[page_index],
+                                size_list) {
+                /* Check that the BO has gone idle.  If not, then none of the
+                 * other BOs (pushed to the list after later rendering) are
+                 * likely to be idle, either.
                  */
-                if (!vc4_bo_wait(bo, 0, NULL)) {
-                        mtx_unlock(&cache->lock);
-                        return NULL;
-                }
+                if (!vc4_bo_wait(iter, 0, NULL))
+                        break;
+
+                if (!vc4_bo_unpurgeable(iter)) {
+                        /* The BO has been purged. Free it and try to find
+                         * another one in the cache.
+                         */
+                        vc4_bo_remove_from_cache(cache, iter);
+                        vc4_bo_free(iter);
+                        continue;
+               }
 
+                bo = iter;
                 pipe_reference_init(&bo->reference, 1);
                 vc4_bo_remove_from_cache(cache, bo);
 
+                vc4_bo_label(screen, bo, "%s", name);
                 bo->name = name;
+                break;
         }
         mtx_unlock(&cache->lock);
         return bo;
@@ -158,7 +255,7 @@ vc4_bo_alloc(struct vc4_screen *screen, uint32_t size, const char *name)
         bo->handle = create.handle;
 
         if (ret != 0) {
-                if (!list_empty(&screen->bo_cache.time_list) &&
+                if (!list_is_empty(&screen->bo_cache.time_list) &&
                     !cleared_and_retried) {
                         cleared_and_retried = true;
                         vc4_bo_cache_free_all(&screen->bo_cache);
@@ -176,6 +273,8 @@ vc4_bo_alloc(struct vc4_screen *screen, uint32_t size, const char *name)
                 vc4_bo_dump_stats(screen);
         }
 
+        vc4_bo_label(screen, bo, "%s", name);
+
         return bo;
 }
 
@@ -191,42 +290,6 @@ vc4_bo_last_unreference(struct vc4_bo *bo)
         mtx_unlock(&screen->bo_cache.lock);
 }
 
-static void
-vc4_bo_free(struct vc4_bo *bo)
-{
-        struct vc4_screen *screen = bo->screen;
-
-        if (bo->map) {
-                if (using_vc4_simulator && bo->name &&
-                    strcmp(bo->name, "winsys") == 0) {
-                        free(bo->map);
-                } else {
-                        munmap(bo->map, bo->size);
-                        VG(VALGRIND_FREELIKE_BLOCK(bo->map, 0));
-                }
-        }
-
-        struct drm_gem_close c;
-        memset(&c, 0, sizeof(c));
-        c.handle = bo->handle;
-        int ret = vc4_ioctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &c);
-        if (ret != 0)
-                fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno));
-
-        screen->bo_count--;
-        screen->bo_size -= bo->size;
-
-        if (dump_stats) {
-                fprintf(stderr, "Freed %s%s%dkb:\n",
-                        bo->name ? bo->name : "",
-                        bo->name ? " " : "",
-                        bo->size / 1024);
-                vc4_bo_dump_stats(screen);
-        }
-
-        free(bo);
-}
-
 static void
 free_stale_bos(struct vc4_screen *screen, time_t time)
 {
@@ -296,6 +359,7 @@ vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time)
                 cache->size_list_size = page_index + 1;
         }
 
+        vc4_bo_purgeable(bo);
         bo->free_time = time;
         list_addtail(&bo->size_list, &cache->size_list[page_index]);
         list_addtail(&bo->time_list, &cache->time_list);
@@ -307,13 +371,13 @@ vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time)
                 vc4_bo_dump_stats(screen);
         }
         bo->name = NULL;
+        vc4_bo_label(screen, bo, "mesa cache");
 
         free_stale_bos(screen, time);
 }
 
 static struct vc4_bo *
 vc4_bo_open_handle(struct vc4_screen *screen,
-                   uint32_t winsys_stride,
                    uint32_t handle, uint32_t size)
 {
         struct vc4_bo *bo;
@@ -324,7 +388,7 @@ vc4_bo_open_handle(struct vc4_screen *screen,
 
         bo = util_hash_table_get(screen->bo_handles, (void*)(uintptr_t)handle);
         if (bo) {
-                pipe_reference(NULL, &bo->reference);
+                vc4_bo_reference(bo);
                 goto done;
         }
 
@@ -337,12 +401,11 @@ vc4_bo_open_handle(struct vc4_screen *screen,
         bo->private = false;
 
 #ifdef USE_VC4_SIMULATOR
-        vc4_simulator_open_from_handle(screen->fd, winsys_stride,
-                                       bo->handle, bo->size);
+        vc4_simulator_open_from_handle(screen->fd, bo->handle, bo->size);
         bo->map = malloc(bo->size);
 #endif
 
-        util_hash_table_set(screen->bo_handles, (void *)(uintptr_t)handle, bo);
+        _mesa_hash_table_insert(screen->bo_handles, (void *)(uintptr_t)handle, bo);
 
 done:
         mtx_unlock(&screen->bo_handles_mutex);
@@ -350,8 +413,7 @@ done:
 }
 
 struct vc4_bo *
-vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
-                 uint32_t winsys_stride)
+vc4_bo_open_name(struct vc4_screen *screen, uint32_t name)
 {
         struct drm_gem_open o = {
                 .name = name
@@ -363,11 +425,11 @@ vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
                 return NULL;
         }
 
-        return vc4_bo_open_handle(screen, winsys_stride, o.handle, o.size);
+        return vc4_bo_open_handle(screen, o.handle, o.size);
 }
 
 struct vc4_bo *
-vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd, uint32_t winsys_stride)
+vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd)
 {
         uint32_t handle;
         int ret = drmPrimeFDToHandle(screen->fd, fd, &handle);
@@ -384,7 +446,7 @@ vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd, uint32_t winsys_stride)
                 return NULL;
         }
 
-        return vc4_bo_open_handle(screen, winsys_stride, handle, size);
+        return vc4_bo_open_handle(screen, handle, size);
 }
 
 int
@@ -401,7 +463,7 @@ vc4_bo_get_dmabuf(struct vc4_bo *bo)
 
         mtx_lock(&bo->screen->bo_handles_mutex);
         bo->private = false;
-        util_hash_table_set(bo->screen->bo_handles, (void *)(uintptr_t)bo->handle, bo);
+        _mesa_hash_table_insert(bo->screen->bo_handles, (void *)(uintptr_t)bo->handle, bo);
         mtx_unlock(&bo->screen->bo_handles_mutex);
 
         return fd;