linux-kernel - Re: [PATCH 02/13] tracing/kprobes: Add fetch{,_size} member into symbol and deref fetch method

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Message-ID: <87k3k0zf7l.fsf@sejong.aot.lge.com>
Date:	Mon, 05 Aug 2013 17:58:38 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Namhyung Kim <namhyung.kim@....com>,
	Hyeoncheol Lee <cheol.lee@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Oleg Nesterov <oleg@...hat.com>,
	"zhangwei\(Jovi\)" <jovi.zhangwei@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: Re: [PATCH 02/13] tracing/kprobes: Add fetch{,_size} member into symbol and deref fetch method

On Mon, 05 Aug 2013 17:19:50 +0900, Masami Hiramatsu wrote:
> (2013/07/31 18:03), Namhyung Kim wrote:
>> From: Hyeoncheol Lee <cheol.lee@....com>
>> 
>> Those symbol and deref fetch methods access a memory region but they
>> assume it's a kernel memory since uprobes does not support them.
>> 
>> Add ->fetch and ->fetch_size member in order to provide a proper
>> access method for supporting uprobes.
>
> It looks symbol cache is not used by uprobes. I think it it enough to
> add fetch/fetch_size to only deref, isn't it?

Right.  I will change it in the next spin.

Thanks,
Namhyung
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