linux-kernel - Re: [RFC][ PATCH -tip v2 3/7] Kbuild: disable gcc crossjumping

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Date:	Fri, 17 Jul 2009 17:15:23 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Jim Keniston <jkenisto@...ibm.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Anders Kaseorg <andersk@...lice.com>,
	Tim Abbott <tabbott@...lice.com>
Subject: Re: [RFC][ PATCH -tip v2 3/7] Kbuild: disable gcc crossjumping

Masami Hiramatsu wrote:
> Sam Ravnborg wrote:
>> On Sat, Jun 27, 2009 at 04:13:04PM -0400, Steven Rostedt wrote:
>>> A change like this requires an ACK from Sam Ravnborg.
>>>
>>> -- Steve
>> Overdue review...
>>
>> I do not know the gcc option so I cannot comment on theeffect of it.
> 
> Thanks for comment. however, as far as I can see, I couldn't find

any inter-function jumps populated by crossjump optimization

> in the difference between binary with -fno-crossjump and without it.
> So I decided to drop this patch...

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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