Set up a custom engine map with no engines, and check that the
for_each_context_engine() correctly iterates over nothing.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
tests/i915/gem_ctx_engines.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/tests/i915/gem_ctx_engines.c b/tests/i915/gem_ctx_engines.c
index 063140e0f..6a2edd1e0 100644
--- a/tests/i915/gem_ctx_engines.c
+++ b/tests/i915/gem_ctx_engines.c
@@ -549,6 +549,31 @@ static void independent(int i915)
gem_context_destroy(i915, param.ctx_id);
}
+static void libapi(int i915)
+{
+ struct i915_context_param_engines engines = {};
+ struct drm_i915_gem_context_param p = {
+ .ctx_id = gem_context_create(i915),
+ .param = I915_CONTEXT_PARAM_ENGINES,
+ .value = to_user_pointer(&engines),
+ .size = sizeof(engines),
+ };
+ const struct intel_execution_engine2 *e;
+ unsigned int count = 0;
+
+ gem_context_set_param(i915, &p);
+
+ for_each_context_engine(i915, p.ctx_id, e)
+ count++;
+ igt_assert_eq(count, 0);
+
+ ____for_each_physical_engine(i915, p.ctx_id, e)
+ count++;
+ igt_assert_eq(count, 0);
+
+ gem_context_destroy(i915, p.ctx_id);
+}
+
igt_main
{
int i915 = -1;
@@ -584,6 +609,9 @@ igt_main
igt_subtest("independent")
independent(i915);
+ igt_subtest("libapi")
+ libapi(i915);
+
igt_fixture
igt_stop_hang_detector();
}
--
2.25.0
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