[Intel-gfx] [PATCH 15/39] drm/i915/gt: Retire cancelled requests on unload

[Chris Wilson]

If we manage to hit the intel_gt_set_wedged_on_fini() while active, i.e.
module unload during a stress test, we may cancel the requests but not
clean up. This leads to a slow module unload as we wait for something or
other to trigger the retirement flushing. Instead if we explicitly
cancel then cleanup on an active unload, it should be instant.

Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_reset.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c 
b/drivers/gpu/drm/i915/gt/intel_reset.c
index ac36b67fb46b..4e5e13dc95da 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -19,6 +19,7 @@
 #include "intel_engine_pm.h"
 #include "intel_gt.h"
 #include "intel_gt_pm.h"
+#include "intel_gt_requests.h"
 #include "intel_reset.h"
 
 #include "uc/intel_guc.h"
@@ -1370,6 +1371,7 @@ void intel_gt_set_wedged_on_fini(struct intel_gt *gt)
 {
        intel_gt_set_wedged(gt);
        set_bit(I915_WEDGED_ON_FINI, &gt->reset.flags);
+       intel_gt_retire_requests(gt); /* cleanup any wedged requests */
 }
 
 void intel_gt_init_reset(struct intel_gt *gt)
-- 
2.20.1

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