From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 05/10] swiotlb: merge swiotlb_unmap_page and unmap_single
Date: Thu, 18 Oct 2018 20:25:35 -0400 [thread overview]
Message-ID: <20181019002535.GG1251@char.us.oracle.com> (raw)
In-Reply-To: <20181008080246.20543-6-hch@lst.de>
On Mon, Oct 08, 2018 at 10:02:41AM +0200, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thank you!
> ---
> kernel/dma/swiotlb.c | 15 ++++-----------
> 1 file changed, 4 insertions(+), 11 deletions(-)
>
> diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
> index 11dbcd80b4a6..15335f3a1bf3 100644
> --- a/kernel/dma/swiotlb.c
> +++ b/kernel/dma/swiotlb.c
> @@ -765,9 +765,9 @@ dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
> * After this call, reads by the cpu to the buffer are guaranteed to see
> * whatever the device wrote there.
> */
> -static void unmap_single(struct device *hwdev, dma_addr_t dev_addr,
> - size_t size, enum dma_data_direction dir,
> - unsigned long attrs)
> +void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
> + size_t size, enum dma_data_direction dir,
> + unsigned long attrs)
> {
> phys_addr_t paddr = dma_to_phys(hwdev, dev_addr);
>
> @@ -790,13 +790,6 @@ static void unmap_single(struct device *hwdev, dma_addr_t dev_addr,
> dma_mark_clean(phys_to_virt(paddr), size);
> }
>
> -void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
> - size_t size, enum dma_data_direction dir,
> - unsigned long attrs)
> -{
> - unmap_single(hwdev, dev_addr, size, dir, attrs);
> -}
> -
> /*
> * Make physical memory consistent for a single streaming mode DMA translation
> * after a transfer.
> @@ -900,7 +893,7 @@ swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
> BUG_ON(dir == DMA_NONE);
>
> for_each_sg(sgl, sg, nelems, i)
> - unmap_single(hwdev, sg->dma_address, sg_dma_len(sg), dir,
> + swiotlb_unmap_page(hwdev, sg->dma_address, sg_dma_len(sg), dir,
> attrs);
> }
>
> --
> 2.19.0
>
next prev parent reply other threads:[~2018-10-19 0:25 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-08 8:02 move swiotlb noncoherent dma support from arm64 to generic code V2 Christoph Hellwig
2018-10-08 8:02 ` [PATCH 01/10] swiotlb: remove a pointless comment Christoph Hellwig
2018-10-11 17:49 ` Robin Murphy
2018-10-19 0:09 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 02/10] swiotlb: mark is_swiotlb_buffer static Christoph Hellwig
2018-10-11 17:54 ` Robin Murphy
2018-10-19 0:12 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 03/10] swiotlb: do not panic on mapping failures Christoph Hellwig
2018-10-11 18:06 ` Robin Murphy
2018-10-19 0:18 ` Konrad Rzeszutek Wilk
2018-10-19 0:17 ` Konrad Rzeszutek Wilk
2018-10-19 6:04 ` Christoph Hellwig
2018-10-19 13:45 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 04/10] swiotlb: remove the overflow buffer Christoph Hellwig
2018-10-11 18:19 ` Robin Murphy
2018-10-12 17:04 ` Catalin Marinas
2018-10-19 0:23 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 05/10] swiotlb: merge swiotlb_unmap_page and unmap_single Christoph Hellwig
2018-10-18 17:44 ` Robin Murphy
2018-10-19 0:25 ` Konrad Rzeszutek Wilk [this message]
2018-10-08 8:02 ` [PATCH 06/10] swiotlb: use swiotlb_map_page in swiotlb_map_sg_attrs Christoph Hellwig
2018-10-18 17:53 ` Robin Murphy
2018-10-19 0:33 ` Konrad Rzeszutek Wilk
2018-11-07 1:27 ` John Stultz
2018-11-09 7:49 ` Christoph Hellwig
2018-11-09 16:37 ` Robin Murphy
2018-11-19 19:36 ` Robin Murphy
2018-11-20 9:22 ` Christoph Hellwig
2018-11-13 0:07 ` John Stultz
2018-11-13 0:26 ` John Stultz
2018-11-14 14:13 ` Christoph Hellwig
2018-11-14 16:12 ` Christoph Hellwig
2018-11-19 23:22 ` John Stultz
2018-11-20 9:25 ` Christoph Hellwig
2018-11-23 18:27 ` Will Deacon
2018-11-23 19:34 ` Robin Murphy
2018-11-26 19:31 ` Will Deacon
2018-10-08 8:02 ` [PATCH 07/10] swiotlb: refactor swiotlb_map_page Christoph Hellwig
2018-10-18 18:09 ` Robin Murphy
2018-10-19 0:37 ` Konrad Rzeszutek Wilk
2018-10-19 6:52 ` Christoph Hellwig
2018-10-19 13:46 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 08/10] swiotlb: don't dip into swiotlb pool for coherent allocations Christoph Hellwig
2018-10-12 17:04 ` Catalin Marinas
2018-10-19 0:40 ` Konrad Rzeszutek Wilk
2018-10-19 16:45 ` Robin Murphy
2018-10-08 8:02 ` [PATCH 09/10] swiotlb: add support for non-coherent DMA Christoph Hellwig
2018-10-19 0:49 ` Konrad Rzeszutek Wilk
2018-10-22 17:11 ` Robin Murphy
2018-10-26 8:04 ` Christoph Hellwig
2018-10-26 9:59 ` Robin Murphy
2018-10-08 8:02 ` [PATCH 10/10] arm64: use the generic swiotlb_dma_ops Christoph Hellwig
2018-10-12 13:01 ` Robin Murphy
2018-10-12 14:40 ` Christoph Hellwig
2018-10-12 17:05 ` Catalin Marinas
2018-10-22 17:52 ` Robin Murphy
2018-10-26 12:44 ` Christoph Hellwig
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