From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Anton Blanchard <anton@samba.org>
Cc: Michael Neuling <mikey@neuling.org>,
paulus@samba.org, sukadev@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: POWER7 optimised copy_to_user/copy_from_user using VMX
Date: Mon, 19 Dec 2011 14:19:07 +1100 [thread overview]
Message-ID: <1324264747.30454.15.camel@pasglop> (raw)
In-Reply-To: <1324263652.30454.13.camel@pasglop>
On Mon, 2011-12-19 at 14:00 +1100, Benjamin Herrenschmidt wrote:
> On Thu, 2011-12-08 at 17:11 +1100, Anton Blanchard wrote:
> > Implement a POWER7 optimised copy_to_user/copy_from_user using VMX.
> > For large aligned copies this new loop is over 10% faster, and for
> > large unaligned copies it is over 200% faster.
>
> Breaks !CONFIG_ALTIVEC build an pops some WARN's with preempt & lockdep,
> this seems to fix them:
And it's missing another ifdef actually for !CONFIG_ALTIVEC, I'll fix it
locally and will put a fixed version in -next.
Cheers,
Ben.
prev parent reply other threads:[~2011-12-19 3:19 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-08 5:02 [PATCH] powerpc: POWER7 optimised copy_to_user/copy_from_user using VMX Anton Blanchard
2011-12-08 5:44 ` Kumar Gala
2011-12-08 5:54 ` Michael Neuling
2011-12-08 6:04 ` Anton Blanchard
2011-12-08 13:31 ` Segher Boessenkool
2011-12-08 14:02 ` David Laight
2011-12-08 14:12 ` Segher Boessenkool
2011-12-08 19:40 ` Benjamin Herrenschmidt
2011-12-08 6:11 ` Anton Blanchard
2011-12-19 3:00 ` Benjamin Herrenschmidt
2011-12-19 3:19 ` Benjamin Herrenschmidt [this message]
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