Do a quick selftest on in the interoperability of dma_fence_wait on a
i915_gem_request.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_request.c | 51 +++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index 9ba17d3e35cb..2bde3fc8e8bf 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -1648,11 +1648,62 @@ static int igt_wait_request(void *ignore)
return err;
}
+static int igt_fence_wait(void *ignore)
+{
+ struct drm_i915_private *i915;
+ struct drm_i915_gem_request *request;
+ int err = -ENOMEM;
+
+ i915 = mock_device();
+ if (!i915)
+ goto out;
+
+ err = -EINVAL;
+ mutex_lock(&i915->drm.struct_mutex);
+ request = mock_request(i915->engine[RCS],
+ i915->kernel_context,
+ HZ);
+ if (!request) {
+ mutex_unlock(&i915->drm.struct_mutex);
+ goto out_device;
+ }
+
+ i915_add_request(request);
+ mutex_unlock(&i915->drm.struct_mutex);
+
+ if (dma_fence_is_signaled(&request->fence)) {
+ pr_err("fence signaled immediately!\n");
+ goto out_device;
+ }
+
+ if (dma_fence_wait_timeout(&request->fence, false, 1) != -ETIME) {
+ pr_err("fence wait success after submit (expected timeout)!\n");
+ goto out_device;
+ }
+
+ if (dma_fence_wait_timeout(&request->fence, false, 2 * HZ) <= 0) {
+ pr_err("fence wait timed out (expected success)!\n");
+ goto out_device;
+ }
+
+ if (!dma_fence_is_signaled(&request->fence)) {
+ pr_err("fence unsignaled after waiting!\n");
+ goto out_device;
+ }
+
+ err = 0;
+out_device:
+ mock_device_free(i915);
+out:
+ return err;
+}
+
int i915_gem_request_selftest(void)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_add_request),
SUBTEST(igt_wait_request),
+ SUBTEST(igt_fence_wait),
};
return i915_subtests(tests, NULL);
--
2.11.0
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