test/gem_cpu_concurrent_blit: Limit memory usage to half aperture

So that we don't cause needless thrashing on older devices and spoil the
test.

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/gem_cpu_concurrent_blit.c b/tests/gem_cpu_concurrent_blit.c
index e1ff8313..ff18f150 100644
--- a/tests/gem_cpu_concurrent_blit.c
+++ b/tests/gem_cpu_concurrent_blit.c
@@ -92,7 +92,7 @@ main(int argc, char **argv)
 {
 	drm_intel_bufmgr *bufmgr;
 	struct intel_batchbuffer *batch;
-	int num_buffers = 128;
+	int num_buffers = 128, max;
 	drm_intel_bo *src[128], *dst[128];
 	int width = 512, height = 512;
 	int fd;
@@ -100,6 +100,10 @@ main(int argc, char **argv)
 
 	fd = drm_open_any();
 
+	max = gem_aperture_size (fd) / (1024 * 1024) / 2;
+	if (num_buffers > max)
+		num_buffers = max;
+
 	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));