From: mike.looijmans@topic•nl (Mike Looijmans)
To: linux-arm-kernel@lists•infradead.org
Subject: dma_alloc_coherent versus streaming DMA, neither works satisfactory
Date: Fri, 8 May 2015 14:17:25 +0200 [thread overview]
Message-ID: <554CA955.4020205@topic.nl> (raw)
In-Reply-To: <20150508111048.GE2067@n2100.arm.linux.org.uk>
?On 08-05-15 13:10, Russell King - ARM Linux wrote:
> Well, I do find the language used rather loose. The term "coherent" is
> well understood, but when the documentation mixes it with "consistent"
> it becomes less clear whether the two terms mean the same thing or
> something different.
I re-read https://www.kernel.org/doc/Documentation/DMA-API.txt with this in mind.
"Part Ia" starts with "dma_alloc_coherent" and (friends) but then talks about
"consistent" memory throughout the whole part. I think a
s/consistent/coherent/g in this part will make things a lot clearer for everyone.
Shall I submit a patch for that?
Part Ib continues, but switches to using the word "coherent" instead.
Kind regards,
Mike Looijmans
System Expert
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next prev parent reply other threads:[~2015-05-08 12:17 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-23 11:52 dma_alloc_coherent versus streaming DMA, neither works satisfactory Mike Looijmans
2015-04-23 12:32 ` Arnd Bergmann
2015-04-23 13:05 ` Mike Looijmans
2015-04-29 8:47 ` Mike Looijmans
2015-04-29 9:01 ` Arnd Bergmann
2015-04-29 9:17 ` Russell King - ARM Linux
2015-04-29 9:47 ` Mike Looijmans
2015-04-29 10:07 ` Arnd Bergmann
2015-04-29 10:33 ` Mike Looijmans
2015-04-29 10:41 ` Arnd Bergmann
2015-04-29 12:49 ` Mike Looijmans
2015-04-29 13:13 ` Arnd Bergmann
2015-04-30 13:50 ` Mike Looijmans
2015-04-30 13:54 ` Arnd Bergmann
2015-05-01 6:08 ` Mike Looijmans
2015-05-01 7:01 ` Mike Looijmans
2015-05-07 11:18 ` Mike Looijmans
2015-05-07 11:56 ` Arnd Bergmann
2015-05-07 13:21 ` Daniel Drake
2015-05-07 13:31 ` Mike Looijmans
2015-05-07 14:08 ` Mike Looijmans
2015-05-07 14:30 ` Russell King - ARM Linux
2015-05-08 5:55 ` Mike Looijmans
2015-05-08 7:54 ` Arnd Bergmann
2015-05-08 8:31 ` Mike Looijmans
2015-05-08 13:19 ` Arnd Bergmann
2015-05-08 14:18 ` Mike Looijmans
2015-05-08 14:27 ` Arnd Bergmann
2015-05-08 11:10 ` Russell King - ARM Linux
2015-05-08 12:17 ` Mike Looijmans [this message]
2015-04-29 11:09 ` Mike Looijmans
2015-04-29 12:35 ` Arnd Bergmann
2015-04-29 12:52 ` Mike Looijmans
2015-04-29 12:54 ` Arnd Bergmann
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