[PATCH v3] powerpc: Add irqtrace support for 32-bit powerpc

[Johannes Berg]

On Mon, 2008-04-07 at 10:14 -0700, Dale Farnsworth wrote:
> Add the low level irq tracing hooks for 32-bit powerpc needed
> to enable full lockdep functionality.
> 
> Dale Farnsworth <dale at farnsworth.org>
> ---
> This version fixes the clobbering of r12 by the call to
> trace_hardirqs_off() that was pointed out by BenH.
> 
> Johannes, I'd appreciate your trying this version if/when
> you get the chance.

Thanks Dale, this version seems to work. I'll stress it a bit more
later, but so far it has survived *much* longer than both previous
versions.

johannes
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