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Commit 84ef3a72 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Show engine state when hangcheck detects a stall 



Knowing the state of the engine when hangcheck thinks it is stalling is
useful for both debugging hangcheck itself and the potential cause of an
unwanted stall.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171214122613.26134-1-chris@chris-wilson.co.uk
parent fe66e928

drivers/gpu/drm/i915/intel_hangcheck.c

+6 −1
Original line number Diff line number Diff line
@@ -349,13 +349,18 @@ static void hangcheck_accumulate_sample(struct intel_engine_cs *engine, 


	case ENGINE_ACTIVE_HEAD:

	case ENGINE_ACTIVE_SUBUNITS:

		/* Seqno stuck with still active engine gets leeway,

		/*

		 * Seqno stuck with still active engine gets leeway,

		 * in hopes that it is just a long shader.

		 */

		timeout = I915_SEQNO_DEAD_TIMEOUT;

		break;



	case ENGINE_DEAD:

		if (drm_debug & DRM_UT_DRIVER) {

			struct drm_printer p = drm_debug_printer("hangcheck");

			intel_engine_dump(engine, &p, "%s", engine->name);

		}

		break;



	default: