From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Doug Ledford <dledford@redhat.com>,
linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
Aurelien Jacquiot <a-jacquiot@ti.com>,
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uclinux-h8-devel@lists.sourceforge.jp
Subject: Re: [PATCH 2/9] Move dma_ops from archdata into struct device
Date: Wed, 11 Jan 2017 07:48:03 +0100 [thread overview]
Message-ID: <20170111064803.GB26893@kroah.com> (raw)
In-Reply-To: <20170111005648.14988-3-bart.vanassche@sandisk.com>
On Tue, Jan 10, 2017 at 04:56:41PM -0800, Bart Van Assche wrote:
> Several RDMA drivers, e.g. drivers/infiniband/hw/qib, use the CPU to
> transfer data between memory and PCIe adapter. Because of performance
> reasons it is important that the CPU cache is not flushed when such
> drivers transfer data. Make this possible by allowing these drivers to
> override the dma_map_ops pointer. Additionally, introduce the function
> set_dma_ops() that will be used by a later patch in this series.
When you say things like "additionally", that's a huge flag that this
needs to be split up into multiple patches. No need to add
set_dma_ops() here in this patch.
And I'd argue that it should be dma_ops_set(), and dma_ops_get(), just
to keep the namespace sane, but that's probably a different set of
patches...
thanks,
greg k-h
next prev parent reply other threads:[~2017-01-11 6:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170111005648.14988-1-bart.vanassche@sandisk.com>
2017-01-11 0:56 ` [PATCH 1/9] treewide: Constify most dma_map_ops structures Bart Van Assche
2017-01-11 0:56 ` Bart Van Assche
2017-01-11 0:56 ` [PATCH 2/9] Move dma_ops from archdata into struct device Bart Van Assche
2017-01-11 0:56 ` Bart Van Assche
2017-01-11 6:46 ` Greg Kroah-Hartman
2017-01-11 18:03 ` Bart Van Assche
2017-01-11 18:03 ` Bart Van Assche
2017-01-11 20:29 ` gregkh
2017-01-11 20:29 ` gregkh
2017-01-11 6:48 ` Greg Kroah-Hartman [this message]
2017-01-11 18:17 ` Bart Van Assche
2017-01-11 18:17 ` Bart Van Assche
2017-01-11 20:31 ` gregkh
2017-01-11 20:31 ` gregkh
2017-01-11 22:28 ` Bart Van Assche
2017-01-11 22:28 ` Bart Van Assche
2017-01-12 7:35 ` gregkh
2017-01-12 7:35 ` gregkh
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