[Intel-gfx] [PATCH i-g-t v2] tests/gem_ringfill: Add {render, blitter}-forked subtests.

[Joonas Lahtinen]

Add forking subtests to gem_ringfill. Tests cause consistent GPU
hangs on SKL.

Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89959
---
 tests/gem_ringfill.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tests/gem_ringfill.c b/tests/gem_ringfill.c
index 85b01ea..1b93a03 100644
--- a/tests/gem_ringfill.c
+++ b/tests/gem_ringfill.c
@@ -241,6 +241,28 @@ igt_main
 	}
 	igt_stop_signal_helper();
 
+	igt_subtest("blitter-forked") {
+		igt_fork(child, 1) {
+			check_ring(bufmgr, batch, "blt", blt_copy);
+		}
+		igt_waitchildren();
+	}
+
+	/* Strictly only required on architectures with a separate BLT ring,
+	 * but lets stress everybody.
+	 */
+	igt_subtest("render-forked") {
+		igt_render_copyfunc_t copy;
+
+		copy = igt_get_render_copyfunc(batch->devid);
+		igt_require(copy);
+
+		igt_fork(child, 1) {
+			check_ring(bufmgr, batch, "render", copy);
+		}
+		igt_waitchildren();
+	}
+
 	igt_fixture {
 		intel_batchbuffer_free(batch);
 		drm_intel_bufmgr_destroy(bufmgr);
-- 
1.8.5.5