powerpc stacktrace and lockdep support

[Johannes Berg]

On Sat, 2007-06-30 at 10:58 +0200, Christoph Hellwig wrote:
> On Thu, Jun 28, 2007 at 06:20:42PM +0200, Johannes Berg wrote:
> > This one doesn't break 32-bit build by simply disabling irqtrace for
> > 32-bit.
> 
> This looks really cool to me.  I'd love to see this in 2.6.23.

Hmm. Looks like I just found a case where I forgot to trace in some
place:

[  241.629380] hardirqs last  enabled at (1319): [<c0000000000b3718>] .get_page_from_freelist+0x298/0x620
[  241.629714] hardirqs last disabled at (1320): [<c000000000033690>] .native_hpte_invalidate+0x60/0x320
[  241.629732] softirqs last  enabled at (1282): [<c000000000059e28>] .__do_softirq+0x198/0x1e0
[  241.629748] softirqs last disabled at (1273): [<c00000000000c7e4>] .do_softirq+0xd4/0xe0

I'll look into it when I get around.

johannes
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