linux-kernel - Re: [PATCH 2/2] perf probe: Allow user to specify address within executable

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Date:	Mon, 02 Dec 2013 15:15:57 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	David Ahern <dsahern@...il.com>
Cc:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Oleg Nesterov <oleg@...hat.com>, namhyung@...nel.org,
	"yrl.pp-manager.tt@...achi.com" <yrl.pp-manager.tt@...achi.com>
Subject: Re: [PATCH 2/2] perf probe: Allow user to specify address within
 executable

(2013/12/02 9:07), David Ahern wrote:
> Allow user to specify an address within an executable. This is useful, for
> example, in probing local functions. If the function name begins with 0x
> then try to convert the supplied name to an address. If succuessful then
> treat the function name as the address within the executable to be probed.

Hmm, IMHO, this kind of functionality is only good for debugging.
In that case, you should use uprobe_events interface directly.

I recommend you to try enabing dwarf support in user space.
Perf probe is a user-friendly interface of dynamic events.

Thank you,


-- 
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com


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