tests/gem_reloc_vs_gpu: add forked versionshang

Seems to result in insta-hangs on my snb here ...

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

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/gem_reloc_vs_gpu.c b/tests/gem_reloc_vs_gpu.c
index a00fb838..fcb917c8 100644
--- a/tests/gem_reloc_vs_gpu.c
+++ b/tests/gem_reloc_vs_gpu.c
@@ -270,6 +270,31 @@ static void do_test(int fd, bool faulting_reloc)
 		igt_enable_prefault();
 }
 
+#define INTERRUPT	(1 << 0)
+#define FAULTING	(1 << 1)
+#define THRASH		(1 << 2)
+#define ALL_FLAGS	(INTERRUPT | FAULTING | THRASH)
+static void do_forked_test(int fd, unsigned flags)
+{
+	int num_threads = sysconf(_SC_NPROCESSORS_ONLN);
+
+	if (flags & THRASH) {
+
+	}
+
+	igt_fork(i, num_threads * 4) {
+		if (flags & INTERRUPT)
+			igt_fork_signal_helper();
+
+		do_test(fd, flags & FAULTING);
+
+		if (flags & INTERRUPT)
+			igt_stop_signal_helper();
+	}
+
+	igt_waitchildren();
+}
+
 int fd;
 
 #define MAX_BLT_SIZE 128
@@ -304,6 +329,14 @@ int main(int argc, char **argv)
 		do_test(fd, true);
 	igt_stop_signal_helper();
 
+	for (unsigned flags = 0; flags <= ALL_FLAGS; flags++) {
+		igt_subtest_f("forked%s%s%s",
+			      flags & INTERRUPT ? "-interruptible" : "",
+			      flags & FAULTING ? "-faulting-reloc" : "",
+			      flags & THRASH ? "-thrashing" : "")
+			do_forked_test(fd, flags);
+	}
+
 	igt_fixture {
 		intel_batchbuffer_free(batch);
 		drm_intel_bufmgr_destroy(bufmgr);