linux-kernel - Re: Final kprobes rollup patches

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Message-ID: <20071217143050.GA13290@elte.hu>
Date:	Mon, 17 Dec 2007 15:30:50 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Harvey Harrison <harvey.harrison@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Prasanna S Panchamukhi <prasanna@...ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Masami Hiramatsu <hiramatu@....hitachi.co.jp>,
	Rusty Lynch <rusty.lynch@...el.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Keshavamurthy Anil S <anil.s.keshavamurthy@...el.com>
Subject: Re: Final kprobes rollup patches

Masami,

* Masami Hiramatsu <mhiramat@...hat.com> wrote:

> Hi Harvey and Ingo,
> 
> I'm working on another version of patches for unification.
> Currently cleaning up the patches.
> http://sources.redhat.com/ml/systemtap/2007-q4/msg00457.html
> I'll cleanup and repost it today.

cool! Please Cc: lkml and Harvey as well so that there's less overlap in 
unification work - Harvey spent quite some time unifying and cleaning up 
the kprobes code during the past week.

So i think we could/should use Harvey's latest series as a base, those 
are pretty finegrained already. Note that they break 64-bit kprobes 
though, with such a config:

 CONFIG_KPROBES=y
 CONFIG_NET_TCPPROBE=y

so it crashes with an int3 in the TCP code. It's probably some trivial 
typo somewhere, as 32-bit works fine.

the coordinates for x86.git#mm can be found below - that tree already 
includes Harvey's latest kprobes series. I'll try to bisect the 64-bit 
breakage now.

	Ingo

------------------>
 git-clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git linux-2.6.git
 cd linux-2.6.git
 git-branch x86
 git-checkout x86
 git-pull git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git mm

(do subsequent pulls via "git-pull --force", as we frequently rebase the
git tree. NOTE: this might override your own local changes, so do this
only if you dont mind about losing thse changes in that tree.)

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