linux-kernel - Re: [PATCH net-next v3 1/7] dma: compile-out DMA sync op calls when not used

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Date: Wed, 14 Feb 2024 18:09:08 +0000
From: Robin Murphy <robin.murphy@....com>
To: Alexander Lobakin <aleksander.lobakin@...el.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: Christoph Hellwig <hch@....de>,
 Marek Szyprowski <m.szyprowski@...sung.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 v3 1/7] dma: compile-out DMA sync op calls when
 not used

On 2024-02-14 4:21 pm, Alexander Lobakin wrote:
[...]
> +static inline bool dma_skip_sync(const struct device *dev)
> +{
> +	return !IS_ENABLED(CONFIG_DMA_NEED_SYNC);
> +}

One more thing, could we please also make this conditional on 
!CONFIG_DMA_API_DEBUG so that that doesn't lose coverage for validating 
syncs?

Thanks,
Robin.