On 2016-09-15 04:41 PM, Chris Wilson wrote:
On Thu, Sep 15, 2016 at 02:40:12PM -0400, robert.foss@xxxxxxxxxxxxx wrote:
From: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Add subtest test_sync_merge that tests merging fences and the validity of the
resulting merged fence.
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Reviewed-by: Eric Engestrom <eric@xxxxxxxxxxxx>
---
tests/sw_sync.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
diff --git a/tests/sw_sync.c b/tests/sw_sync.c
index 3061279..26226bd 100644
--- a/tests/sw_sync.c
+++ b/tests/sw_sync.c
@@ -116,6 +116,70 @@ static void test_sync_wait(void)
close(timeline);
}
+static void test_sync_merge(void)
+{
+ int in_fence[3];
+ int fence_merge;
+ int timeline;
+ int active, signaled;
+
+ timeline = sw_sync_timeline_create();
+ in_fence[0] = sw_sync_fence_create(timeline, 1);
+ in_fence[1] = sw_sync_fence_create(timeline, 2);
+ in_fence[2] = sw_sync_fence_create(timeline, 3);
+
+ fence_merge = sw_sync_merge(in_fence[0], in_fence[1]);
+ fence_merge = sw_sync_merge(in_fence[2], fence_merge);
sw_sync_merge() really does need the negative tests:
invalid fd (-1),
device fd (/dev/dri/card0),
file fd.
Open other descriptors sounds like a good idea, but for device and file
fds, which ones will always be available and open-able on any system?
should cover the most common errors (fuzz testing will hit the rest!)
+
+ /* confirm all fences have one active point (even d) */
+ active = sw_sync_fence_count_status(in_fence[0],
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(active == 1, "in_fence[0] has too many active fences\n");
+ active = sw_sync_fence_count_status(in_fence[1],
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(active == 1, "in_fence[1] has too many active fences\n");
+ active = sw_sync_fence_count_status(in_fence[2],
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(active == 1, "in_fence[2] has too many active fences\n");
+ active = sw_sync_fence_count_status(fence_merge,
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(active == 1, "fence_merge has too many active fences\n");
+
+ /* confirm that fence_merge is not signaled until the max of fence 0,1,2 */
+ sw_sync_timeline_inc(timeline, 1);
+ signaled = sw_sync_fence_count_status(in_fence[0],
+ SW_SYNC_FENCE_STATUS_SIGNALED);
This is missing from the earlier test_sync_busy().
+ active = sw_sync_fence_count_status(fence_merge,
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(signaled == 1, "in_fence[0] did not signal\n");
+ igt_assert_f(active == 1, "fence_merge signaled too early\n");
+
+ sw_sync_timeline_inc(timeline, 1);
+ signaled = sw_sync_fence_count_status(in_fence[1],
+ SW_SYNC_FENCE_STATUS_SIGNALED);
+ active = sw_sync_fence_count_status(fence_merge,
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(signaled == 1, "in_fence[1] did not signal\n");
+ igt_assert_f(active == 1, "fence_merge signaled too early\n");
+
+ sw_sync_timeline_inc(timeline, 1);
+ signaled = sw_sync_fence_count_status(in_fence[2],
+ SW_SYNC_FENCE_STATUS_SIGNALED);
+ igt_assert_f(signaled == 1, "in_fence[2] did not signal\n");
+ signaled = sw_sync_fence_count_status(fence_merge,
+ SW_SYNC_FENCE_STATUS_SIGNALED);
+ active = sw_sync_fence_count_status(fence_merge,
+ SW_SYNC_FENCE_STATUS_ACTIVE);
+ igt_assert_f(active == 0 && signaled == 1,
+ "fence_merge did not signal\n");
Hmm, counting STATUS_SIGNALED / STATUS_ACTIVE is not behaving how I
would intuitively expect.
At this point, timeline.seqno = 3, I would expect count_signaled(merge)
== 3 (and count_fences(merge) == 3 => merge is now signaled).
But that's just my expectations
I'll have a look into this.
Rob.
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