From: Robert Foss <robert.foss@xxxxxxxxxxxxx>
This subtest verifies that creating many timelines and merging random fences
from each timeline with eachother results in merged fences that are fully
functional.
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Reviewed-by: Eric Engestrom <eric@xxxxxxxxxxxx>
---
tests/sw_sync.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/tests/sw_sync.c b/tests/sw_sync.c
index 11373bb..09c7ab8 100644
--- a/tests/sw_sync.c
+++ b/tests/sw_sync.c
@@ -399,6 +399,76 @@ static void test_sync_multi_consumer_producer(void)
igt_assert_f(thread_ret == 0, "A sync thread reported failure.\n");
}
+static void test_sync_random_merge(void)
+{
+ int i, size, ret;
+ const int nbr_timeline = 32;
+ const int nbr_merge = 1024;
+ int fence_map[nbr_timeline];
+ int timeline_arr[nbr_timeline];
+ int fence, tmpfence, merged;
+ int timeline, timeline_offset, sync_pt;
+
+ srand(time(NULL));
+
+ for (i = 0; i < nbr_timeline; i++) {
+ timeline_arr[i] = sw_sync_timeline_create();
+ fence_map[i] = -1;
+ }
+
+ sync_pt = rand();
+ fence = sw_sync_fence_create(timeline_arr[0], sync_pt);
+
+ fence_map[0] = sync_pt;
+
+ /* Randomly create syncpoints out of a fixed set of timelines,
+ * and merge them together.
+ */
+ for (i = 0; i < nbr_merge; i++) {
+ /* Generate syncpoint. */
+ timeline_offset = rand() % nbr_timeline;
+ timeline = timeline_arr[timeline_offset];
+ sync_pt = rand();
+
+ /* Keep track of the latest sync_pt in each timeline. */
+ if (fence_map[timeline_offset] == -1)
+ fence_map[timeline_offset] = sync_pt;
+ else if (fence_map[timeline_offset] < sync_pt)
+ fence_map[timeline_offset] = sync_pt;
+
+ /* Merge. */
+ tmpfence = sw_sync_fence_create(timeline, sync_pt);
+ merged = sync_merge(tmpfence, fence);
+ close(tmpfence);
+ close(fence);
+ fence = merged;
+ }
+
+ size = 0;
+ for (i = 0; i < nbr_timeline; i++)
+ if (fence_map[i] != -1)
+ size++;
+
+ /* Trigger the merged fence. */
+ for (i = 0; i < nbr_timeline; i++) {
+ if (fence_map[i] != -1) {
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == -1 && errno == ETIME,
+ "Failure waiting on fence until timeout\n");
+ /* Increment the timeline to the last sync_pt */
+ sw_sync_timeline_inc(timeline_arr[i], fence_map[i]);
+ }
+ }
+
+ /* Check that the fence is triggered. */
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == 0, "Failure triggering fence\n");
+
+ close(fence);
+ for (i = 0; i < nbr_timeline; i++)
+ close(timeline_arr[i]);
+}
+
igt_main
{
igt_subtest("alloc_timeline")
@@ -427,5 +497,8 @@ igt_main
igt_subtest("sync_multi_consumer_producer")
test_sync_multi_consumer_producer();
+
+ igt_subtest("sync_random_merge")
+ test_sync_random_merge();
}
--
2.10.2
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