From: "Pan, Xinhui" <Xinhui.Pan@amd.com>
To: "amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>
Cc: "Koenig, Christian" <Christian.Koenig@amd.com>
Subject: [PATCH] drm/amdgpu: flush the fence on the bo after we individualize
Date: Wed, 15 Jan 2020 06:26:31 +0000 [thread overview]
Message-ID: <SN6PR12MB2800D9829487F03471B416C787370@SN6PR12MB2800.namprd12.prod.outlook.com> (raw)
As we move the ttm_bo_individualize_resv() upwards, we need flush the
copied fence too. Otherwise the driver keeps waiting for fence.
run&Kill kfdtest, then perf top.
25.53% [ttm] [k] ttm_bo_delayed_delete
24.29% [kernel] [k] dma_resv_test_signaled_rcu
19.72% [kernel] [k] ww_mutex_lock
Fix: 378e2d5b("drm/ttm: fix ttm_bo_cleanup_refs_or_queue once more")
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
---
drivers/gpu/drm/ttm/ttm_bo.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 8d91b0428af1..1494aebb8128 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -499,8 +499,10 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo)
dma_resv_unlock(bo->base.resv);
}
- if (bo->base.resv != &bo->base._resv)
+ if (bo->base.resv != &bo->base._resv) {
+ ttm_bo_flush_all_fences(bo);
dma_resv_unlock(&bo->base._resv);
+ }
error:
kref_get(&bo->list_kref);
--
2.17.1
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next reply other threads:[~2020-01-15 6:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-15 6:26 Pan, Xinhui [this message]
2020-01-15 13:19 ` [PATCH] drm/amdgpu: flush the fence on the bo after we individualize Christian König
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