Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
dma-buf: use inline lock for the stub fence v2
Using the inline lock is now the recommended way for dma_fence
implementations.
So use this approach for the framework's internal fences as well.
Also saves about 4 bytes for the external spinlock.
v2: drop unnecessary changes
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Philipp Stanner <phasta@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/r/20260219160822.1529-7-christian.koenig@amd.com
+2
-10
+2
-10
drivers/dma-buf/dma-fence.c
+2
-10
drivers/dma-buf/dma-fence.c
···
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24
EXPORT_TRACEPOINT_SYMBOL(dma_fence_enable_signal);
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EXPORT_TRACEPOINT_SYMBOL(dma_fence_signaled);
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-
static DEFINE_SPINLOCK(dma_fence_stub_lock);
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static struct dma_fence dma_fence_stub;
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28
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/*
···
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static int __init dma_fence_init_stub(void)
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{
125
-
dma_fence_init(&dma_fence_stub, &dma_fence_stub_ops,
126
-
&dma_fence_stub_lock, 0, 0);
127
-
126
+
dma_fence_init(&dma_fence_stub, &dma_fence_stub_ops, NULL, 0, 0);
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set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
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&dma_fence_stub.flags);
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-
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dma_fence_signal(&dma_fence_stub);
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return 0;
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}
···
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if (fence == NULL)
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return NULL;
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-
dma_fence_init(fence,
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-
&dma_fence_stub_ops,
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-
&dma_fence_stub_lock,
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-
0, 0);
163
-
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+
dma_fence_init(fence, &dma_fence_stub_ops, NULL, 0, 0);
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set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
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&fence->flags);
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