Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cache lines | KernelTrap

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cache lines

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From: Pekka Enberg

Subject: Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cache lines

Date: Tuesday, May 11, 2010 - 1:38 pm

Mike Frysinger wrote:
quoted text> that is a question for David/Grant.  i'm not the SPI core maintainer,
> i'm merely watching over some SPI drivers.  however, this answer also
> doesnt sound like it's thinking big enough because what you're
> proposing isnt specific to the SPI bus -- any time a DMA safe buffer
> is needed dynamically, this function could be used.

Well, we have dma_alloc_coherent(), shouldn't you be using that instead?
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Messages in current thread:

[PATCH] ad7877: fix spi word size to 16 bit, Oskar Schirmer, (Thu May 6, 3:37 am)

[PATCH] ad7877: keep dma rx buffers in seperate cache lines, Oskar Schirmer, (Thu May 6, 3:37 am)

RE: [PATCH] ad7877: fix spi word size to 16 bit, Hennerich, Michael, (Thu May 6, 4:18 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Mike Frysinger, (Thu May 6, 11:26 am)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Mike Frysinger, (Thu May 6, 11:46 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Daniel Glöckner, (Fri May 7, 2:41 am)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Oskar Schirmer, (Fri May 7, 3:15 am)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Johannes Weiner, (Fri May 7, 5:07 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Mike Frysinger, (Fri May 7, 11:23 am)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Mike Frysinger, (Fri May 7, 11:28 am)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Johannes Weiner, (Sat May 8, 3:32 pm)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Mike Frysinger, (Sat May 8, 9:45 pm)

Re: [PATCH] ad7877: keep dma rx buffers in seperate cache ..., Oskar Schirmer, (Sun May 9, 1:50 am)

[PATCH v2] ad7877: keep dma rx buffers in seperate cache lines, Oskar Schirmer, (Mon May 10, 3:34 am)

[PATCH v3] ad7877: keep dma rx buffers in seperate cache lines, Oskar Schirmer, (Mon May 10, 3:42 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Mon May 10, 9:39 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Dmitry Torokhov, (Mon May 10, 1:54 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Andrew Morton, (Mon May 10, 2:22 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Mon May 10, 2:27 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Andrew Morton, (Mon May 10, 8:20 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Dmitry Torokhov, (Mon May 10, 11:05 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Mon May 10, 11:11 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Dmitry Torokhov, (Mon May 10, 11:21 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Mon May 10, 11:23 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Dmitry Torokhov, (Mon May 10, 11:33 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Mon May 10, 11:37 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Pekka Enberg, (Mon May 10, 11:42 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Christoph Lameter, (Tue May 11, 6:57 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Oskar Schirmer, (Tue May 11, 7:12 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Dmitry Torokhov, (Tue May 11, 9:52 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 10:31 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Pekka Enberg, (Tue May 11, 11:59 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 1:03 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Matt Mackall, (Tue May 11, 1:07 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 1:10 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Christoph Lameter, (Tue May 11, 1:21 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Pekka Enberg, (Tue May 11, 1:22 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 1:34 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Pekka Enberg, (Tue May 11, 1:38 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 1:43 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Christoph Lameter, (Tue May 11, 1:46 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Pekka Enberg, (Tue May 11, 1:47 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 1:54 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Pekka Enberg, (Tue May 11, 2:01 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 2:11 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Dmitry Torokhov, (Tue May 11, 2:53 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Alan Cox, (Tue May 11, 3:37 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Mike Frysinger, (Tue May 11, 3:39 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., FUJITA Tomonori, (Tue May 11, 6:58 pm)

RE: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Marc Gauthier, (Tue May 11, 7:07 pm)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Nick Piggin, (Tue May 11, 8:03 pm)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., FUJITA Tomonori, (Tue May 11, 8:23 pm)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Mike Frysinger, (Tue May 11, 9:35 pm)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., FUJITA Tomonori, (Tue May 11, 10:28 pm)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Johannes Weiner, (Wed May 12, 3:36 am)

RE: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Marc Gauthier, (Wed May 12, 5:35 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Mike Frysinger, (Wed May 12, 7:36 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Mike Frysinger, (Wed May 12, 7:37 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Dmitry Torokhov, (Wed May 12, 11:11 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Mike Frysinger, (Wed May 12, 11:28 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Paul Mundt, (Wed May 12, 11:21 pm)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Dmitry Torokhov, (Thu May 13, 12:53 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Oskar Schirmer, (Sat May 15, 11:15 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Mike Frysinger, (Sun May 16, 12:25 pm)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., Michal Simek, (Sun May 16, 11:12 pm)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Oskar Schirmer, (Mon May 17, 12:29 am)

RE: [PATCH] ad7877: fix spi word size to 16 bit, Hennerich, Michael, (Mon May 17, 1:14 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Oskar Schirmer, (Mon May 17, 1:41 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Mike Frysinger, (Mon May 17, 4:49 pm)

RE: [PATCH] ad7877: fix spi word size to 16 bit, H Hartley Sweeten, (Mon May 17, 5:18 pm)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Oskar Schirmer, (Tue May 18, 1:32 am)

[PATCH v2] ad7877: fix spi word size to 16 bit, Oskar Schirmer, (Tue May 18, 1:34 am)

Re: [PATCH] ad7877: fix spi word size to 16 bit, Daniel Glöckner, (Tue May 18, 2:37 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., David Woodhouse, (Wed May 19, 5:48 am)

Re: [PATCH v3] ad7877: keep dma rx buffers in seperate cac ..., David Woodhouse, (Wed May 19, 6:00 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Nick Piggin, (Wed May 19, 6:07 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., David Woodhouse, (Wed May 19, 6:17 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Nick Piggin, (Wed May 19, 6:36 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Johannes Weiner, (Wed May 19, 6:44 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Nick Piggin, (Wed May 19, 6:52 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., FUJITA Tomonori, (Wed May 19, 7:38 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., David Woodhouse, (Wed May 19, 7:58 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Johannes Weiner, (Wed May 19, 8:00 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., Dmitry Torokhov, (Wed May 19, 9:37 am)

Re: [LKML] Re: [PATCH v3] ad7877: keep dma rx buffers in s ..., FUJITA Tomonori, (Wed May 19, 9:42 pm)

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