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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: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171214122613.26134-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-12-14 12:26:13 +00:00
parent fe66e92888
commit 84ef3a727e
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/i915/intel_hangcheck.c
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@ -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: