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Subject: Re: [PATCH] powerpc: Add jump label support
From: Michael Ellerman <michael@ellerman.id.au>
To: Steven Rostedt <rostedt@goodmis.org>
In-Reply-To: <1289225915.12418.2.camel@gandalf.stny.rr.com>
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Date: Tue, 09 Nov 2010 14:33:00 +1100
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Cc: Kumar Gala <kumar.gala@freescale.com>, linux-kernel@vger.kernel.org, "David
	S.Miller" <davem@davemloft.net>, linuxppc-dev@ozlabs.org,
	Anton Blanchard <anton@samba.org>, jbaron@redhat.com
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On Mon, 2010-11-08 at 09:18 -0500, Steven Rostedt wrote:
> On Mon, 2010-11-08 at 15:12 +1100, Michael Ellerman wrote:
> > This patch adds support for the new "jump label" feature.
>=20
> Darn it! I wanted to port this!!!
>=20
> ;-)

Sorry! I've been locked in a dark room for ages and this was a nice
chance to work on some upstream code for a change :)

> > Built for 64 & 32 bit, tested on 64 bit. Survives a kernel build under
> > perf with all tracepoints enabled, and manual inspection of the patched
> > code looks right. But still, lightly tested, YMMV.
> >=20
> > Unlike x86 and sparc we just merrily patch the code with no locks etc,
> > as far as I know this is safe, but I'm not really sure what the x86/spa=
rc
> > code is protecting against so maybe it's not.
>=20
> Thanks, I'll give it a test on my electra as soon as I get a gcc 4.5.1
> cross compiler working.

Thanks.

cheers



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