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dma-buf: set signaling bit for the stub fence

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Here's setting software signaling bit for the stub fence
which is always signaled. If this fence signaling bit is
not set then the AMD GPU scheduler will cause a GPU reset
due to a GPU scheduler cleanup activity timeout.

Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220914164321.2156-3-Arvind.Yadav@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Arvind Yadav 2022-09-14 22:13:17 +05:30 committed by Christian König
parent 6ad9aa476c
commit c85d00d4fd
1 changed files with 8 additions and 0 deletions
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8
drivers/dma-buf/dma-fence.c
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@ -136,6 +136,10 @@ struct dma_fence *dma_fence_get_stub(void)
&dma_fence_stub_ops,
&dma_fence_stub_lock,
0, 0);
set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
&dma_fence_stub.flags);
dma_fence_signal_locked(&dma_fence_stub);
}
spin_unlock(&dma_fence_stub_lock);
@ -161,6 +165,10 @@ struct dma_fence *dma_fence_allocate_private_stub(void)
&dma_fence_stub_ops,
&dma_fence_stub_lock,
0, 0);
set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
&dma_fence_stub.flags);
dma_fence_signal(fence);
return fence;