linux-kernel - [QUESTION] Can uprobe_event support @ADDR, $retval, offs(FETCHARG)?

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Message-ID: <CANFS6bZtOPe8XbsgC0V0encVLssFShWGhNLZQkCvEhKcNT946w@mail.gmail.com>
Date:	Wed, 26 Sep 2012 11:52:11 +0900
From:	Hyeoncheol Lee <hyc.lee@...il.com>
To:	srikar@...ux.vnet.ibm.com
Cc:	masami.hiramatsu.pt@...achi.com, linux-kernel@...r.kernel.org
Subject: [QUESTION] Can uprobe_event support @ADDR, $retval, offs(FETCHARG)?

Hi,

uprobe_event only supports %REG arguments. I think that memory fetch,
return value fetch, memory dereference functions in
kernel/trace/trace_probe.c are good for uprobe_event. So with a little
modification of parse_probe_arg(), uprobe_event can support @ADDR,
$retval, offs(FETCHARGS) except @SYM, $stack, $stackN. Is it right?

Thanks,
Hyeoncheol
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