[PATCH 0/9] Clean up SMP IPI support

Catalin Marinas catalin.marinas at arm.com
Wed Nov 17 12:17:28 EST 2010


On Wed, 2010-11-17 at 17:07 +0000, Catalin Marinas wrote:
> On Mon, 2010-11-15 at 17:55 +0000, Russell King - ARM Linux wrote:
> > This series is aimed at cleaning up our SMP IPI support.  As has been
> > recently pointed out, we have a spinlock in percpu data, which is not
> > very nice.
> > 
> > If we switch to using the GIC SGIs, one for each IPI function, then
> > we don't need the mask of ipi bits indicating what work needs to be
> > done.  This allows us to get rid of the troublesome spinlock in
> > send_ipi_message().
> 
> FWIW, the patches look fine to me (though I have tested them):
                                              ^^^^
I meant I have *not* tested them.

-- 
Catalin




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