[Intel-gfx] [PATCH 4/4 v2] gem_flink_race: Assure no pending requests before object counting

[oscar.mateo at intel.com]

From: Oscar Mateo <oscar.mateo at intel.com>

Same thing that was done for prime_self_import.

v2: Move igt_drop_caches_set() call inside get_object_count() to make
it clearer why we want this.

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 tests/gem_flink_race.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tests/gem_flink_race.c b/tests/gem_flink_race.c
index b81007e..195ec15 100644
--- a/tests/gem_flink_race.c
+++ b/tests/gem_flink_race.c
@@ -35,6 +35,7 @@
 #include "drmtest.h"
 #include "i915_drm.h"
 #include "intel_bufmgr.h"
+#include "igt_debugfs.h"
 
 /* Testcase: check for flink/open vs. gem close races
  *
@@ -54,6 +55,8 @@ static int get_object_count(void)
 	int device = drm_get_card();
 	char *path;
 
+	igt_drop_caches_set(DROP_RETIRE);
+
 	ret = asprintf(&path, "/sys/kernel/debug/dri/%d/i915_gem_objects", device);
 	igt_assert(ret != -1);
 
@@ -157,9 +160,11 @@ static void test_flink_close(void)
 {
 	pthread_t *threads;
 	int r, i, num_threads;
-	int obj_count = get_object_count();
+	int obj_count;
 	void *status;
 
+	obj_count = get_object_count();
+
 	num_threads = sysconf(_SC_NPROCESSORS_ONLN);
 
 	threads = calloc(num_threads, sizeof(pthread_t));
-- 
1.7.9.5