drm/i915/selftests: Pretty print the i915_active (164a4128) · Commits · 戴 / test

drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -102,8 +102,12 @@ static int __live_idle_pulse(struct intel_engine_cs *engine,
		pulse_unlock_wait(p); /* synchronize with the retirement callback */

		if (!i915_active_is_idle(&p->active)) {
		struct drm_printer m = drm_err_printer("pulse");

		pr_err("%s: heartbeat pulse did not flush idle tasks\n",
		engine->name);
		i915_active_print(&p->active, &m);

		err = -EINVAL;
		goto out;
		}

+2 −0

Original line number	Diff line number	Diff line
		@@ -214,4 +214,6 @@ int i915_active_acquire_preallocate_barrier(struct i915_active *ref,
		void i915_active_acquire_barrier(struct i915_active *ref);
		void i915_request_add_active_barriers(struct i915_request *rq);

		void i915_active_print(struct i915_active ref, struct drm_printer m);

		#endif /* _I915_ACTIVE_H_ */

+45 −0

Original line number	Diff line number	Diff line
		@@ -205,3 +205,48 @@ int i915_active_live_selftests(struct drm_i915_private *i915)

		return i915_subtests(tests, i915);
		}

		static struct intel_engine_cs node_to_barrier(struct active_node it)
		{
		struct intel_engine_cs *engine;

		if (!is_barrier(&it->base))
		return NULL;

		engine = __barrier_to_engine(it);
		smp_rmb(); /* serialise with add_active_barriers */
		if (!is_barrier(&it->base))
		return NULL;

		return engine;
		}

		void i915_active_print(struct i915_active ref, struct drm_printer m)
		{
		drm_printf(m, "active %pS:%pS\n", ref->active, ref->retire);
		drm_printf(m, "\tcount: %d\n", atomic_read(&ref->count));
		drm_printf(m, "\tpreallocated barriers? %s\n",
		yesno(!llist_empty(&ref->preallocated_barriers)));

		if (i915_active_acquire_if_busy(ref)) {
		struct active_node it, n;

		rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node) {
		struct intel_engine_cs *engine;

		engine = node_to_barrier(it);
		if (engine) {
		drm_printf(m, "\tbarrier: %s\n", engine->name);
		continue;
		}

		if (i915_active_fence_isset(&it->base)) {
		drm_printf(m,
		"\ttimeline: %llx\n", it->timeline);
		continue;
		}
		}

		i915_active_release(ref);
		}
		}