Re: [PATCH -mm] x86_64 apic.h cpu_relax() (was: [RFC -mm] more cpu_relax() places?)

[Andi Kleen]

Andreas Mohr <andi@xxxxxxxxxxxxxxxxxxxxxxx> writes:

> Hi all,
> 
> On Mon, Jun 12, 2006 at 08:37:43PM +0200, Andreas Mohr wrote:
> > Hi all,
> > 
> > while reviewing 2.6.17-rc6-mm1, I found some places that might
> > want to make use of cpu_relax() in order to not block secondary
> > pipelines while busy-polling (probably especially useful on SMT CPUs):
> 
> Patch no. 3 of 3.
> 
> This one is adding a cpu_relax() that already existed in the i386 version.
> Any reason this wasn't there, too?
> 
> Signed-off-by: Andreas Mohr <andi@xxxxxxxx>

I merged the patch thanks.

-Andi
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