linux-kernel - RE: [PATCH 15/17] tracing/uprobes: Add support for full argument access methods

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Date:	Fri, 3 Jan 2014 10:17:23 +0900
From:	"Hyeoncheol Lee" <cheol.lee@....com>
To:	"'Steven Rostedt'" <rostedt@...dmis.org>
Cc:	"'Namhyung Kim'" <namhyung@...nel.org>,
	"'Oleg Nesterov'" <oleg@...hat.com>,
	"'Masami Hiramatsu'" <masami.hiramatsu.pt@...achi.com>,
	"'Srikar Dronamraju'" <srikar@...ux.vnet.ibm.com>,
	"'zhangwei\(Jovi\)'" <jovi.zhangwei@...wei.com>,
	"'Arnaldo Carvalho de Melo'" <acme@...stprotocols.net>,
	"'Hemant Kumar'" <hkshaw@...ux.vnet.ibm.com>,
	"'LKML'" <linux-kernel@...r.kernel.org>,
	"'Namhyung Kim'" <namhyung.kim@....com>
Subject: RE: [PATCH 15/17] tracing/uprobes: Add support for full argument access methods

Patches look good to me.

Signed-off-by: Hyeoncheol Lee <cheol.lee@....com>

-----Original Message-----
From: Steven Rostedt [mailto:rostedt@...dmis.org] 
Sent: Friday, January 03, 2014 6:02 AM
To: Steven Rostedt
Cc: Namhyung Kim; Oleg Nesterov; Masami Hiramatsu; Srikar Dronamraju;
Hyeoncheol Lee; zhangwei(Jovi); Arnaldo Carvalho de Melo; Hemant Kumar;
LKML; Namhyung Kim
Subject: Re: [PATCH 15/17] tracing/uprobes: Add support for full argument
access methods

On Thu, 2 Jan 2014 15:58:27 -0500
Steven Rostedt <rostedt@...dmis.org> wrote:

> On Mon, 16 Dec 2013 13:32:14 +0900
> Namhyung Kim <namhyung@...nel.org> wrote:
> 
> > From: Namhyung Kim <namhyung.kim@....com>
> > 
> > Enable to fetch other types of argument for the uprobes.  IOW, we 
> > can access stack, memory, deref, bitfield and retval from uprobes now.
> > 
> > The format for the argument types are same as kprobes (but @SYMBOL 
> > type is not supported for uprobes), i.e:
> > 
> >   @ADDR   : Fetch memory at ADDR
> >   $stackN : Fetch Nth entry of stack (N >= 0)
> >   $stack  : Fetch stack address
> >   $retval : Fetch return value
> >   +|-offs(FETCHARG) : Fetch memory at FETCHARG +|- offs address
> > 
> > Note that the retval only can be used with uretprobes.
> > 
> > Original-patch-by: Hyeoncheol Lee <cheol.lee@....com>
> 
> Where was the original patch posted? And can we get Hyeoncheol's SOB 
> for this?
> 

Was this the other part of patch 11? Still should have Hyeoncheol's
signed-off-by. If you already had it on the original (before the split) then
we can add it here too, as he already signed off on the code that this was
based on.

-- Steve

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