r600g: remove slab allocator for pipe_resource (used mainly for user buffers)

src/gallium/drivers/r600/r600_buffer.c

@@ -26,15 +26,15 @@
  */
 #include "r600_pipe.h"
 #include "util/u_upload_mgr.h"
+#include "util/u_memory.h"
 
 static void r600_buffer_destroy(struct pipe_screen *screen,
 				struct pipe_resource *buf)
 {
-	struct r600_screen *rscreen = (struct r600_screen*)screen;
 	struct r600_resource *rbuffer = r600_resource(buf);
 
 	pb_reference(&rbuffer->buf, NULL);
-	util_slab_free(&rscreen->pool_buffers, rbuffer);
+	FREE(rbuffer);
 }
 
 static struct pipe_transfer *r600_get_transfer(struct pipe_context *ctx,
@@ -207,7 +207,7 @@ struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
 	/* XXX We probably want a different alignment for buffers and textures. */
 	unsigned alignment = 4096;
 
-	rbuffer = util_slab_alloc(&rscreen->pool_buffers);
+	rbuffer = MALLOC_STRUCT(r600_resource);
 
 	rbuffer->b.b = *templ;
 	pipe_reference_init(&rbuffer->b.b.reference, 1);
@@ -215,7 +215,7 @@ struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
 	rbuffer->b.vtbl = &r600_buffer_vtbl;
 
 	if (!r600_init_resource(rscreen, rbuffer, templ->width0, alignment, templ->bind, templ->usage)) {
-		util_slab_free(&rscreen->pool_buffers, rbuffer);
+		FREE(rbuffer);
 		return NULL;
 	}
 	return &rbuffer->b.b;

src/gallium/drivers/r600/r600_pipe.c

@@ -152,25 +152,6 @@ static void r600_flush_from_winsys(void *ctx, unsigned flags)
 	r600_flush((struct pipe_context*)ctx, NULL, flags);
 }
 
-static void r600_update_num_contexts(struct r600_screen *rscreen, int diff)
-{
-	pipe_mutex_lock(rscreen->mutex_num_contexts);
-	if (diff > 0) {
-		rscreen->num_contexts++;
-
-		if (rscreen->num_contexts > 1)
-			util_slab_set_thread_safety(&rscreen->pool_buffers,
-						    UTIL_SLAB_MULTITHREADED);
-	} else {
-		rscreen->num_contexts--;
-
-		if (rscreen->num_contexts <= 1)
-			util_slab_set_thread_safety(&rscreen->pool_buffers,
-						    UTIL_SLAB_SINGLETHREADED);
-	}
-	pipe_mutex_unlock(rscreen->mutex_num_contexts);
-}
-
 static void r600_destroy_context(struct pipe_context *context)
 {
 	struct r600_context *rctx = (struct r600_context *)context;
@@ -197,8 +178,6 @@ static void r600_destroy_context(struct pipe_context *context)
 	}
 	util_slab_destroy(&rctx->pool_transfers);
 
-	r600_update_num_contexts(rctx->screen, -1);
-
 	r600_release_command_buffer(&rctx->start_cs_cmd);
 
 	if (rctx->cs) {
@@ -221,8 +200,6 @@ static struct pipe_context *r600_create_context(struct pipe_screen *screen, void
 			 sizeof(struct pipe_transfer), 64,
 			 UTIL_SLAB_SINGLETHREADED);
 
-	r600_update_num_contexts(rscreen, 1);
-
 	rctx->context.screen = screen;
 	rctx->context.priv = priv;
 	rctx->context.destroy = r600_destroy_context;
@@ -613,9 +590,6 @@ static void r600_destroy_screen(struct pipe_screen* pscreen)
 	pipe_mutex_destroy(rscreen->fences.mutex);
 
 	rscreen->ws->destroy(rscreen->ws);
-
-	util_slab_destroy(&rscreen->pool_buffers);
-	pipe_mutex_destroy(rscreen->mutex_num_contexts);
 	FREE(rscreen);
 }
 
@@ -873,12 +847,6 @@ struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 
 	util_format_s3tc_init();
 
-	util_slab_create(&rscreen->pool_buffers,
-			 sizeof(struct r600_resource), 64,
-			 UTIL_SLAB_SINGLETHREADED);
-
-	pipe_mutex_init(rscreen->mutex_num_contexts);
-
 	rscreen->fences.bo = NULL;
 	rscreen->fences.data = NULL;
 	rscreen->fences.next_index = 0;

src/gallium/drivers/r600/r600_pipe.h

@@ -119,15 +119,10 @@ struct r600_screen {
 	enum chip_class			chip_class;
 	struct radeon_info		info;
 	struct r600_tiling_info		tiling_info;
-	struct util_slab_mempool	pool_buffers;
 	struct r600_pipe_fences		fences;
 
-	unsigned			num_contexts;
 	bool				use_surface_alloc;
 	int 				glsl_feature_level;
-
-	/* for thread-safe write accessing to num_contexts */
-	pipe_mutex			mutex_num_contexts;
 };
 
 struct r600_pipe_sampler_view {