[Intel-gfx] [PATCH] drm/i915: Show guilty context name on GPU reset

[Chris Wilson]

We mention that we are resetting the GPU, and dump the device state for
post mortem debugging. However, while that dump contains the active
processes and the one flagged as causing the error, we do not always
include that information in dmesg. Include the name of the guilty
process in dmesg for reference.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_reset.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index f03e000051c1..86d52383bf9d 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -87,6 +87,10 @@ static bool context_mark_guilty(struct i915_gem_context *ctx)
 	if (!i915_gem_context_is_bannable(ctx))
 		return false;
 
+	dev_notice(ctx->i915->drm.dev,
+		   "%s context reset due to GPU hang\n",
+		   ctx->name);
+
 	/* Record the timestamp for the last N hangs */
 	prev_hang = ctx->hang_timestamp[0];
 	for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp) - 1; i++)
-- 
2.24.0