This turns out to be quite useful if one happens to be debugging
semaphore deadlocks.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
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 7dc11fcb13de..741441daae32 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,"
--
2.20.1
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