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Message-ID: <20181206184027.291947c3@redhat.com>
Date: Thu, 6 Dec 2018 18:40:27 +0100
From: Jesper Dangaard Brouer <brouer@...hat.com>
To: Christoph Hellwig <hch@....de>
Cc: iommu@...ts.linux-foundation.org,
Linus Torvalds <torvalds@...ux-foundation.org>,
Tariq Toukan <tariqt@...lanox.com>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>,
Toke Høiland-Jørgensen
<toke@...e.dk>, Robin Murphy <robin.murphy@....com>,
linux-kernel@...r.kernel.org, brouer@...hat.com
Subject: Re: [PATCH] dma-mapping: bypass indirect calls for dma-direct
On Thu, 6 Dec 2018 07:37:20 -0800
Christoph Hellwig <hch@....de> wrote:
> Avoid expensive indirect calls in the fast path DMA mapping
> operations by directly calling the dma_direct_* ops if we are using
> the directly mapped DMA operations.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
> include/linux/dma-direct.h | 17 -----
> include/linux/dma-mapping.h | 138 +++++++++++++++++++++++++++++++-----
> kernel/dma/direct.c | 13 ++--
> 3 files changed, 127 insertions(+), 41 deletions(-)
Hi Christoph,
Is this patch to be applied on top of the other (41) patches I just
tested with my XDP forward workload?
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
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