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 dma-fence-chain
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.
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/20260219160822.1529-9-christian.koenig@amd.com
+1
-3
+1
-2
drivers/dma-buf/dma-fence-chain.c
+1
-2
drivers/dma-buf/dma-fence-chain.c
···
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struct dma_fence_chain *prev_chain = to_dma_fence_chain(prev);
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uint64_t context;
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-
spin_lock_init(&chain->lock);
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rcu_assign_pointer(chain->prev, prev);
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chain->fence = fence;
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chain->prev_seqno = 0;
···
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seqno = max(prev->seqno, seqno);
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}
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-
dma_fence_init64(&chain->base, &dma_fence_chain_ops, &chain->lock,
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+
dma_fence_init64(&chain->base, &dma_fence_chain_ops, NULL,
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context, seqno);
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/*