linux-kernel - Re: [PATCH net-next v2 1/7] dma: compile-out DMA sync op calls when not used

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Date: Tue, 13 Feb 2024 06:57:07 +0100
From: Christoph Hellwig <hch@....de>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Christoph Hellwig <hch@....de>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Robin Murphy <robin.murphy@....com>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Magnus Karlsson <magnus.karlsson@...el.com>,
	Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
	Alexander Duyck <alexanderduyck@...com>, bpf@...r.kernel.org,
	netdev@...r.kernel.org, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 1/7] dma: compile-out DMA sync op calls
 when not used

> +void __dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
> +			       size_t size, enum dma_data_direction dir);
> +void __dma_sync_single_for_device(struct device *dev, dma_addr_t addr,
> +				  size_t size, enum dma_data_direction dir);
> +void __dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
> +			   int nelems, enum dma_data_direction dir);
> +void __dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
> +			      int nelems, enum dma_data_direction dir);

Please stick to the two-tab indentation for continuing prototypes.
The version here is not only much harder to read, but also keeps blowing
up the diffs for current and future changes.

Otherwise this looks good to me.