From 25f9cebd7a52ddf15405d74fb5fd4c374f301983 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 21 Jan 2019 22:20:46 +0000
Subject: [PATCH] drm/i915: Show all active engines on hangcheck
This turns out to be quite useful if one happens to be debugging
semaphore deadlocks.
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/20190121222117.23305-4-chris@chris-wilson.co.uk
---
drivers/gpu/drm/i915/intel_hangcheck.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_hangcheck.c b/drivers/gpu/drm/i915/intel_hangcheck.c
index 7dc11fcb13dee..741441daae321 100644
--- a/drivers/gpu/drm/i915/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/intel_hangcheck.c
@@ -195,10 +195,6 @@ static void hangcheck_accumulate_sample(struct intel_engine_cs *engine,
break;
case ENGINE_DEAD:
- if (GEM_SHOW_DEBUG()) {
- struct drm_printer p = drm_debug_printer("hangcheck");
- intel_engine_dump(engine, &p, "%s\n", engine->name);
- }
break;
default:
@@ -285,6 +281,17 @@ static void i915_hangcheck_elapsed(struct work_struct *work)
wedged |= intel_engine_flag(engine);
}
+ if (GEM_SHOW_DEBUG() && (hung | stuck)) {
+ struct drm_printer p = drm_debug_printer("hangcheck");
+
+ for_each_engine(engine, dev_priv, id) {
+ if (intel_engine_is_idle(engine))
+ continue;
+
+ intel_engine_dump(engine, &p, "%s\n", engine->name);
+ }
+ }
+
if (wedged) {
dev_err(dev_priv->drm.dev,
"GPU recovery timed out,"
--
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