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Commit 59e4b19d authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Dump the engine state before declaring wedged from wait_for_engines() 



If wait_for_engines() fails and we resort to declaring the HW wedged,
dump the engine state for debugging.

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/20171211194135.27095-2-chris@chris-wilson.co.uk
parent ee42c00e

drivers/gpu/drm/i915/i915_gem.c

+12 −1
Original line number Diff line number Diff line
@@ -3534,7 +3534,18 @@ static int wait_for_timeline(struct i915_gem_timeline *tl, unsigned int flags) 
static int wait_for_engines(struct drm_i915_private *i915)

{

	if (wait_for(intel_engines_are_idle(i915), I915_IDLE_ENGINES_TIMEOUT)) {

		DRM_ERROR("Failed to idle engines, declaring wedged!\n");

		dev_err(i915->drm.dev,

			"Failed to idle engines, declaring wedged!\n");

		if (drm_debug & DRM_UT_DRIVER) {

			struct drm_printer p = drm_debug_printer(__func__);

			struct intel_engine_cs *engine;

			enum intel_engine_id id;



			for_each_engine(engine, i915, id)

				intel_engine_dump(engine, &p,

						  "%s", engine->name);

		}



		i915_gem_set_wedged(i915);

		return -EIO;

	}