[Intel-gfx] [PATCH 5/6] write-only mappings
Ben Widawsky
ben at bwidawsk.net
Tue Sep 20 06:25:05 CEST 2011
This test probably won't get pushed. It's a very synthetic test to help me
benchmark
Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
tests/Makefile.am | 1 +
tests/gem_wo_map.c | 311 ++++++++++++++++++++++++++++++++++++++++++++++++++++
tests/test.sh | 10 ++
3 files changed, 322 insertions(+), 0 deletions(-)
create mode 100644 tests/gem_wo_map.c
create mode 100755 tests/test.sh
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 80a9c94..65cf128 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -44,6 +44,7 @@ TESTS = getversion \
gen3_mixed_blits \
gem_storedw_loop \
gem_storedw_batches_loop \
+ gem_wo_map \
$(NULL)
HANG = \
diff --git a/tests/gem_wo_map.c b/tests/gem_wo_map.c
new file mode 100644
index 0000000..5c18e20
--- /dev/null
+++ b/tests/gem_wo_map.c
@@ -0,0 +1,311 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Ben Widawsky <ben at bwidawsk.net>
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <pthread.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+#include "intel_bufmgr.h"
+#include "intel_batchbuffer.h"
+#include "intel_gpu_tools.h"
+
+static drm_intel_bufmgr *bufmgr;
+struct intel_batchbuffer *batch;
+drm_intel_bo *src, *dst;
+int fd;
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+int num_writes = 1;
+
+#define NUM_MAPS 128 * 1024
+#define NUM_BLITS 128 * 1024
+#define SURFACE_SIZE (1<<20)
+#define SURFACE_PAGEES (SURFACE_SIZE >> 12)
+#define SURFACE_PAGES (SURFACE_SIZE >> 12)
+
+bool thread_ret;
+
+/* acts like a gpu memcpy */
+static void
+blit(void)
+{
+ uint32_t pitch = 4096;
+ uint32_t lines = SURFACE_SIZE / pitch;
+ uint32_t line_width = pitch;
+
+ BEGIN_BATCH(8);
+ OUT_BATCH((2<<29) | (0x43<<22) | (0x3<<20) | 4);
+ OUT_BATCH((0x3<<24) | (0xcc<<16) | pitch);
+ OUT_BATCH((lines<<16) | line_width);
+ OUT_RELOC(dst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
+ OUT_BATCH(pitch);
+ OUT_RELOC(src, I915_GEM_DOMAIN_RENDER, 0, 0);
+ ADVANCE_BATCH();
+
+ intel_batchbuffer_flush(batch);
+}
+
+static inline int
+get_offset(void)
+{
+ return (rand() % SURFACE_PAGES) * 4096;
+}
+
+static void
+touch_page(char * const base)
+{
+ int i = 0;
+ for(i = 0; i < num_writes; i++) {
+ base[get_offset()] = 1;
+ }
+}
+
+static void *
+blits(void *arg)
+{
+ int i = 0;
+ for (i = 0; i < NUM_BLITS; i++) {
+ blit();
+ usleep(100);
+ }
+ pthread_exit(NULL);
+}
+
+static void *
+maps(void *arg)
+{
+ int i = 0;
+ for (i = 0; i < NUM_MAPS; i++) {
+ drm_intel_bo_map(src, 1);
+ touch_page(src->virtual);
+ drm_intel_bo_unmap(src);
+ }
+ pthread_exit(NULL);
+}
+
+static void *
+maps_gtt(void *arg)
+{
+ int i = 0;
+ for (i = 0; i < NUM_MAPS; i++) {
+ drm_intel_gem_bo_map_gtt(src);
+ touch_page(src->virtual);
+ drm_intel_bo_unmap(src);
+ }
+ pthread_exit(NULL);
+}
+
+static void *
+maps_wo(void *arg)
+{
+ int i = 0;
+ for (i = 0; i < NUM_MAPS; i++) {
+ drm_intel_gem_bo_map_wo(src);
+ touch_page(src->virtual);
+ drm_intel_bo_unmap(src);
+ }
+
+ drm_intel_gem_bo_flush_obj(src);
+
+ pthread_exit(NULL);
+}
+
+static void *
+maps_gtt_wo(void *arg)
+{
+ int i = 0;
+ for (i = 0; i < NUM_MAPS; i++) {
+ drm_intel_gem_bo_map_gtt_wo(src, 0, 0);
+ touch_page(src->virtual);
+ drm_intel_bo_unmap(src);
+ }
+ pthread_exit(&thread_ret);
+}
+
+static void *
+functional_test_wo(void *arg)
+{
+ drm_intel_gem_bo_map_wo(src);
+ touch_page(src->virtual);
+ ((char *)src->virtual)[1000] = 1;
+ drm_intel_bo_unmap(src);
+ blit();
+ drm_intel_bo_wait_rendering(batch->bo);
+
+ drm_intel_bo_map(dst, 0);
+ thread_ret = (((char *)dst->virtual)[1000] == 1);
+ drm_intel_bo_unmap(dst);
+ pthread_exit(&thread_ret);
+}
+
+static void *
+functional_test_gtt_wo(void *arg)
+{
+ drm_intel_gem_bo_map_gtt_wo(src, 0, 0);
+ touch_page(src->virtual);
+ ((char *)src->virtual)[1000] = 1;
+ drm_intel_bo_unmap(src);
+ blit();
+ drm_intel_bo_wait_rendering(batch->bo);
+
+ drm_intel_bo_map(dst, 0);
+ thread_ret = (((char *)dst->virtual)[1000] == 1);
+ drm_intel_bo_unmap(dst);
+ pthread_exit(&thread_ret);
+}
+
+static void *
+functional_test_gtt(void *arg)
+{
+ drm_intel_gem_bo_map_gtt(src);
+ ((char *)src->virtual)[1000] = 1;
+ drm_intel_bo_unmap(src);
+ blit();
+ drm_intel_bo_wait_rendering(batch->bo);
+
+ drm_intel_bo_map(dst, 0);
+ thread_ret = (((char *)dst->virtual)[1000] == 1);
+ drm_intel_bo_unmap(dst);
+ pthread_exit(&thread_ret);
+}
+
+static void *
+functional_test(void *arg)
+{
+ drm_intel_bo_map(src, 1);
+ ((char *)src->virtual)[1000] = 1;
+ drm_intel_bo_unmap(src);
+ blit();
+ drm_intel_bo_wait_rendering(batch->bo);
+
+ drm_intel_bo_map(dst, 0);
+ thread_ret = (((char *)dst->virtual)[1000] == 1);
+ drm_intel_bo_unmap(dst);
+ pthread_exit(&thread_ret);
+}
+
+typedef void * (*thread_function)(void *);
+
+thread_function ffuncs[2][2] = {
+ {functional_test, functional_test_gtt},
+ {functional_test_wo, functional_test_gtt_wo}
+};
+
+thread_function sfuncs[2][2] = {
+ {maps, maps_gtt},
+ {maps_wo, maps_gtt_wo}
+};
+
+static void usage(const char *name)
+{
+ fprintf(stderr, "Usage: %s -[s|f] [-w write only] [-g gtt]\n", name);
+}
+
+int main(int argc, char **argv)
+{
+ pthread_t blit_thread;
+ pthread_t map_thread;
+ int test = 0;
+ int write_only = 0;
+ int gtt = 0;
+ char opt;
+ bool ret[1];
+
+ while ((opt = getopt(argc, argv, "sfwgc:")) != -1) {
+ switch(opt) {
+ case 'c':
+ num_writes = atoi(optarg);
+ break;
+ case 's':
+ test = 1;
+ break;
+ case 'f':
+ test = 2;
+ break;
+ case 'w':
+ write_only = 1;
+ break;
+ case 'g':
+ gtt = 1;
+ break;
+ case 'h':
+ case '?':
+ default:
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ srandom(0xdeadbeef);
+ fd = drm_open_any();
+
+ bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
+ drm_intel_bufmgr_gem_enable_reuse(bufmgr);
+ batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
+
+ src = drm_intel_bo_alloc(bufmgr, "src", SURFACE_SIZE, 4096);
+ dst = drm_intel_bo_alloc(bufmgr, "dst", SURFACE_SIZE, 4096);
+
+ switch (test) {
+ case 0:
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ break;
+ case 2:
+ pthread_create(&map_thread, NULL, ffuncs[gtt][write_only], NULL);
+ pthread_join(map_thread, (void **)&ret);
+ assert(*ret == true);
+ break;
+ default:
+ pthread_create(&blit_thread, NULL, blits, NULL);
+ pthread_create(&map_thread, NULL, sfuncs[gtt][write_only], NULL);
+ pthread_join(map_thread, NULL);
+ /* We don't want to time blit performance for this benchmark,
+ * though it is relevant.
+ */
+ pthread_join(blit_thread, NULL);
+ break;
+ }
+
+ intel_batchbuffer_free(batch);
+ drm_intel_bufmgr_destroy(bufmgr);
+
+ close(fd);
+
+ return 0;
+}
diff --git a/tests/test.sh b/tests/test.sh
new file mode 100755
index 0000000..8a03249
--- /dev/null
+++ b/tests/test.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+echo "Map"
+time ./gem_wo_map -s -c 50
+echo "Map GTT"
+time ./gem_wo_map -sg -c 50
+echo "Map WO"
+time ./gem_wo_map -sw -c 50
+echo "Map GTT WO"
+time ./gem_wo_map -sgw -c 50
--
1.7.6.1
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