From b05734720de982a40676a14ddfdca5f87b4aab5e Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 30 Sep 2020 17:32:53 +0100
Subject: [PATCH] drm/i915/gt: Retire cancelled requests on unload
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 very slow module unload as we wait for
something or other to trigger the retirement flushing, or timeout and
unload with a bunch of warnings. Instead if we explicitly cancel then
cleanup on an active unload, it should be instant and quiet.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200930163253.2789-3-chris@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 ac36b67fb46be..4e5e13dc95da2 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, >->reset.flags);
+ intel_gt_retire_requests(gt); /* cleanup any wedged requests */
}
void intel_gt_init_reset(struct intel_gt *gt)
--
GitLab