linux-kernel - Re: [RFC] [PATCH 2.6.37-rc5-tip 16/20] 16: uprobes: register a notifier for uprobes.

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Message-ID: <20110127065032.GQ19725@linux.vnet.ibm.com>
Date:	Thu, 27 Jan 2011 12:20:32 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Christoph Hellwig <hch@...radead.org>,
	Andi Kleen <andi@...stfloor.org>,
	Oleg Nesterov <oleg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	SystemTap <systemtap@...rces.redhat.com>,
	Linux-mm <linux-mm@...r.kernel.org>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [RFC] [PATCH 2.6.37-rc5-tip 16/20] 16: uprobes: register a
 notifier for uprobes.

* Peter Zijlstra <peterz@...radead.org> [2011-01-25 14:56:18]:

> On Thu, 2010-12-16 at 15:30 +0530, Srikar Dronamraju wrote:
> > Uprobe needs to be intimated on int3 and singlestep exceptions.
> > Hence uprobes registers a die notifier so that its notified of the events.
> 
> Why isn't this part of the previous patch? This splitup really doesn't
> make sense.

The die notifier which is introduced in patch 15 is arch dependent
(i.e x86). Whereever possible I have kept the arch dependent parts
separate from the arch independent parts so that porting to
another architecture becomes easier and clear.

-- 
Thanks and Regards
Srikar
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