gem_stress: some stats about incoherencies

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/tests/gem_stress.c b/tests/gem_stress.c
index 5aa4d40..3bc538a 100644 (file)
--- a/tests/gem_stress.c
+++ b/tests/gem_stress.c
@@ -95,6 +95,11 @@ static unsigned num_total_tiles = 0;
 int fence_storm = 0;
 static int gpu_busy_load = 10;
 
+struct {
+       unsigned num_failed;
+       unsigned max_failed_reads;
+} stats;
+
 static void tile2xy(struct scratch_buf *buf, unsigned tile, unsigned *x, unsigned *y)
 {
        assert(tile < buf->num_tiles);
@@ -193,7 +198,7 @@ static void cpucpy2d(uint32_t *src, unsigned src_stride, unsigned src_x, unsigne
                                    logical_tile_no, i*options.tile_size + j, tmp, expect, (int) tmp - expect);
                            if (options.trace_tile >= 0 && options.fail)
                                    exit(1);
-                           failed = 1;
+                           failed++;
                        }
                        /* when not aborting, correct any errors */
                        dst[dst_ofs] = expect;
@@ -201,6 +206,11 @@ static void cpucpy2d(uint32_t *src, unsigned src_stride, unsigned src_x, unsigne
        }
        if (failed && options.fail)
                exit(1);
+
+       if (failed > stats.max_failed_reads)
+               stats.max_failed_reads = failed;
+       if (failed)
+               stats.num_failed++;
 }
 
 static void cpu_copyfunc(struct scratch_buf *src, unsigned src_x, unsigned src_y,
@@ -917,6 +927,9 @@ int main(int argc, char **argv)
 
        fan_in_and_check();
 
+       fprintf(stderr, "num failed tiles %u, max incoherent bytes %lu\n",
+               stats.num_failed, stats.max_failed_reads*sizeof(uint32_t));
+
        intel_batchbuffer_free(batch);
        drm_intel_bufmgr_destroy(bufmgr);