gem_flink_race: Assure no pending requests before object counting

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

diff --git a/tests/gem_flink_race.c b/tests/gem_flink_race.c
index b81007e..195ec15 100644 (file)
--- 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));