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dma-buf: use inline lock for the dma-fence-chain

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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
This commit is contained in:
Christian König 2025-10-09 16:32:33 +02:00
parent 5943243914
commit a408c0ca0c
2 changed files with 1 additions and 3 deletions
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3
drivers/dma-buf/dma-fence-chain.c
View File

@ -245,7 +245,6 @@ void dma_fence_chain_init(struct dma_fence_chain *chain,
struct dma_fence_chain *prev_chain = to_dma_fence_chain(prev); struct dma_fence_chain *prev_chain = to_dma_fence_chain(prev);
uint64_t context; uint64_t context;
spin_lock_init(&chain->lock);
rcu_assign_pointer(chain->prev, prev); rcu_assign_pointer(chain->prev, prev);
chain->fence = fence; chain->fence = fence;
chain->prev_seqno = 0; chain->prev_seqno = 0;
@ -261,7 +260,7 @@ void dma_fence_chain_init(struct dma_fence_chain *chain,
seqno = max(prev->seqno, seqno); seqno = max(prev->seqno, seqno);
} }
dma_fence_init64(&chain->base, &dma_fence_chain_ops, &chain->lock, dma_fence_init64(&chain->base, &dma_fence_chain_ops, NULL,
context, seqno); context, seqno);
/* /*

1
include/linux/dma-fence-chain.h
View File

@ -46,7 +46,6 @@ struct dma_fence_chain {
*/ */
struct irq_work work; struct irq_work work;
}; };
spinlock_t lock;
}; };