A trivial kselftest to submit a request and wait upon it.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/selftests/i915_gem_request.c | 44 +++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_request.c b/drivers/gpu/drm/i915/selftests/i915_gem_request.c
index 43d92d8c8377..743a641b1cd9 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_request.c
@@ -47,10 +47,54 @@ static int igt_add_request(void *arg)
return err;
}
+static int igt_wait_request(void *arg)
+{
+ const long T = HZ / 4;
+ struct drm_i915_private *i915 = arg;
+ struct drm_i915_gem_request *request;
+ int err = -EINVAL;
+
+ mutex_lock(&i915->drm.struct_mutex);
+ request = mock_request(i915->engine[RCS], i915->kernel_context, T);
+ if (!request) {
+ err = -ENOMEM;
+ goto out_unlock;
+ }
+
+ i915_add_request(request);
+
+ if (i915_gem_request_completed(request)) {
+ pr_err("request completed immediately!\n");
+ goto out_unlock;
+ }
+
+ if (i915_wait_request(request, I915_WAIT_LOCKED, T / 2) != -ETIME) {
+ pr_err("request wait succeeded (expected tiemout!)\n");
+ goto out_unlock;
+ }
+
+ if (i915_wait_request(request, I915_WAIT_LOCKED, T) == -ETIME) {
+ pr_err("request wait timed out!\n");
+ goto out_unlock;
+ }
+
+ if (!i915_gem_request_completed(request)) {
+ pr_err("request not complete after waiting!\n");
+ goto out_unlock;
+ }
+
+ err = 0;
+out_unlock:
+ mock_device_flush(i915);
+ mutex_unlock(&i915->drm.struct_mutex);
+ return err;
+}
+
int i915_gem_request_selftest(void)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_add_request),
+ SUBTEST(igt_wait_request),
};
struct drm_i915_private *i915;
int err;
--
2.11.0
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