igt/gem_exec_nop: Display submission mechanism

Useful for confirmation when testing.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 41 insertions, 0 deletions

diff --git a/tests/gem_sync.c b/tests/gem_sync.c
index abb31679..44b2378c 100644
--- a/tests/gem_sync.c
+++ b/tests/gem_sync.c
@@ -25,6 +25,7 @@
 #include <pthread.h>
 
 #include "igt.h"
+#include "igt_sysfs.h"
 
 #define LOCAL_I915_EXEC_NO_RELOC (1<<11)
 #define LOCAL_I915_EXEC_HANDLE_LUT (1<<12)
@@ -689,6 +690,45 @@ store_all(int fd, int num_children)
 	igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
 }
 
+static void print_welcome(int fd)
+{
+	bool active;
+	char *str;
+	int dir;
+
+	dir = igt_sysfs_open_parameters(fd);
+	if (dir < 0)
+		return;
+
+	str = igt_sysfs_get(dir, "enable_guc_submission");
+	active = str && atoi(str) > 0;
+	free(str);
+
+	if (active) {
+		igt_info("Using GuC submission\n");
+		goto out;
+	}
+
+	str = igt_sysfs_get(dir, "enable_execlists");
+	active = str && atoi(str) > 0;
+	free(str);
+
+	if (active) {
+		igt_info("Using Execlists submission\n");
+		goto out;
+	}
+
+	str = igt_sysfs_get(dir, "semaphores");
+	active = str && atoi(str) > 0;
+	free(str);
+
+	igt_info("Using Legacy submission %s\n",
+		 active ? ", with semaphores" : "");
+
+out:
+	close(dir);
+}
+
 igt_main
 {
 	const struct intel_execution_engine *e;
@@ -699,6 +739,7 @@ igt_main
 
 	igt_fixture {
 		fd = drm_open_driver(DRIVER_INTEL);
+		print_welcome(fd);
 
 		igt_fork_hang_detector(fd);
 	}