From 2045d666ae634f1676660acfb864bcba0e9f86ca Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 8 May 2020 10:29:25 +0100
Subject: [PATCH] drm/i915: Ignore submit-fences on the same timeline
Git-commit: 2045d666ae634f1676660acfb864bcba0e9f86ca
Patch-mainline: v5.8-rc1
References: bsc#1174737
While we ordinarily do not skip submit-fences due to the accompanying
hook that we want to callback on execution, a submit-fence on the same
timeline is meaningless.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200508092933.738-1-chris@chris-wilson.co.uk
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/i915_request.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -1052,6 +1052,9 @@ i915_request_await_execution(struct i915
if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
continue;
+ if (fence->context == rq->fence.context)
+ continue;
+
/*
* We don't squash repeated fence dependencies here as we
* want to run our callback in all cases.