linux-kernel - Re: [PATCH 13/17] tracing/uprobes: Pass 'is_return' to traceprobe_parse_probe

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Date:	Tue, 10 Dec 2013 00:11:45 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Hyeoncheol Lee <cheol.lee@....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 13/17] tracing/uprobes: Pass 'is_return' to traceprobe_parse_probe_arg()

(2013/12/09 15:20), Namhyung Kim wrote:
> From: Namhyung Kim <namhyung.kim@....com>
> 
> Currently uprobes don't pass is_return to the argument parser so that
> it cannot make use of "$retval" fetch method since it only works for
> return probes.

Looks good for me.

Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

> 
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> Cc: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
> Cc: Oleg Nesterov <oleg@...hat.com>
> Cc: zhangwei(Jovi) <jovi.zhangwei@...wei.com>
> Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  kernel/trace/trace_uprobe.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
> index 89dd346865ad..d407a556aa55 100644
> --- a/kernel/trace/trace_uprobe.c
> +++ b/kernel/trace/trace_uprobe.c
> @@ -512,7 +512,7 @@ static int create_trace_uprobe(int argc, char **argv)
>  
>  		/* Parse fetch argument */
>  		ret = traceprobe_parse_probe_arg(arg, &tu->tp.size, parg,
> -						 false, false);
> +						 is_return, false);
>  		if (ret) {
>  			pr_info("Parse error at argument[%d]. (%d)\n", i, ret);
>  			goto error;
> 


-- 
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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