drm/i915/selftests: Dump engine state and trace upon hanging after reset

If the engine dies after a reset, and so we fail to submit a request
but need to be interrupted by the CI runner, dump the engine state.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200615165013.22973-2-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index 2af66f8ffbd2d72e94291c7d3b1e05c5b10c02fd..7461936d549debee3e6108b74764e6a9b4f9952c 100644 (file)
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -499,6 +499,20 @@ static int igt_reset_nop_engine(void *arg)
 
                                rq = intel_context_create_request(ce);
                                if (IS_ERR(rq)) {
+                                       struct drm_printer p =
+                                               drm_info_printer(gt->i915->drm.dev);
+                                       intel_engine_dump(engine, &p,
+                                                         "%s(%s): failed to submit request\n",
+                                                         __func__,
+                                                         engine->name);
+
+                                       GEM_TRACE("%s(%s): failed to submit request\n",
+                                                 __func__,
+                                                 engine->name);
+                                       GEM_TRACE_DUMP();
+
+                                       intel_gt_set_wedged(gt);
+
                                        err = PTR_ERR(rq);
                                        break;
                                }