From 95a19ab4d7f8afbfca0564102d7d0bea2196c12c Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 9 Oct 2017 12:02:58 +0100
Subject: [PATCH] drm/i915/selftests: Pretty print engine state when requests
fail to start
During hangcheck testing, we try to execute requests following the GPU
reset, and in particular want to try and debug when those fail.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171009110301.21705-2-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
---
drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
index 08159b268893..7e1bdd88eda3 100644
--- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
@@ -624,8 +624,11 @@ static int igt_wait_reset(void *arg)
__i915_add_request(rq, true);
if (!wait_for_hang(&h, rq)) {
+ struct drm_printer p = drm_info_printer(i915->drm.dev);
+
pr_err("Failed to start request %x, at %x\n",
rq->fence.seqno, hws_seqno(&h, rq));
+ intel_engine_dump(rq->engine, &p);
i915_reset(i915, 0);
i915_gem_set_wedged(i915);
@@ -716,8 +719,12 @@ static int igt_reset_queue(void *arg)
__i915_add_request(rq, true);
if (!wait_for_hang(&h, prev)) {
+ struct drm_printer p = drm_info_printer(i915->drm.dev);
+
pr_err("Failed to start request %x, at %x\n",
prev->fence.seqno, hws_seqno(&h, prev));
+ intel_engine_dump(rq->engine, &p);
+
i915_gem_request_put(rq);
i915_gem_request_put(prev);
@@ -818,8 +825,11 @@ static int igt_handle_error(void *arg)
__i915_add_request(rq, true);
if (!wait_for_hang(&h, rq)) {
+ struct drm_printer p = drm_info_printer(i915->drm.dev);
+
pr_err("Failed to start request %x, at %x\n",
rq->fence.seqno, hws_seqno(&h, rq));
+ intel_engine_dump(rq->engine, &p);
i915_reset(i915, 0);
i915_gem_set_wedged(i915);
--
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