Hi
On Mon, Sep 9, 2013 at 4:40 AM, Alexandre Courbot <gnurou@xxxxxxxxx> wrote:
> On Mon, Sep 9, 2013 at 11:36 AM, Alexandre Courbot <gnurou@xxxxxxxxx> wrote:
>> On Sat, Sep 7, 2013 at 9:25 PM, David Herrmann <dh.herrmann@xxxxxxxxx> wrote:
>>> From dbfb8e12166d494cd60823cbe84134d5d1a73ec8 Mon Sep 17 00:00:00 2001
>>> From: David Herrmann <dh.herrmann@xxxxxxxxx>
>>> Date: Sat, 7 Sep 2013 14:22:01 +0200
>>> Subject: [PATCH] devm/simplefb: introduce and use devm_ioremap_wc()
>>>
>>> We want to use devm_ioremap_nocache() or even devm_ioremap_wc() to speed
>>> up fbdev writes _a lot_. As devm_ioremap_wc() doesn't exist, yet,
>>> introduce it along the way. Note that ioremap_wc() is aliases to
>>> ioremap_nocache() in asm-generic/{io,iomem}.h so we can safely expect all
>>> architectures to either provide it or use the same alias.
>>>
>>> Reported-by: Tom Gundersen <teg@xxxxxxx>
>>> Signed-off-by: David Herrmann <dh.herrmann@xxxxxxxxx>
>>> Cc: Stephen Warren <swarren@xxxxxxxxxxxxx>
>>> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
>>> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
>>
>> Tried this on SHIELD, and it dramatically increases performance.
>>
>> Tested-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
>
> Maybe the patch should be split into two though, one that adds
> devm_ioremap_wc() and another that takes advantage of it for simplefb.
Thanks for testing! I added your tested-by. I also changed the patches
slightly to no longer use devm_*. The *_wc patch is now split off,
too. I will send it later today.
Thanks
David
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