linux-kernel - Re: [PATCH 2/3] trace_kprobes: always show group name

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Date:	Wed, 25 Nov 2009 07:43:39 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Lai Jiangshan <laijs@...fujitsu.com>
CC:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] trace_kprobes: always show group name

Lai Jiangshan wrote:
> 
> Sometimes the group name is not "kprobes",
> It'll be better if we can read it from tracing/kprobe_events.
> 
> # echo 'r:laijs/vfs_read vfs_read %ax' > kprobe_events
> # cat kprobe_events
> r:laijs/vfs_read vfs_read %ax=%ax


Yep, that looks very nice :-)

Acked-by: Masami Hiramatsu <mhiramat@...hat.com>

> 
> Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
> ---
> diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
> index 79ce6a2..9e42f2a 100644
> --- a/kernel/trace/trace_kprobe.c
> +++ b/kernel/trace/trace_kprobe.c
> @@ -758,7 +758,7 @@ static int probes_seq_show(struct seq_file *m, void *v)
>  	char buf[MAX_ARGSTR_LEN + 1];
>  
>  	seq_printf(m, "%c", probe_is_return(tp) ? 'r' : 'p');
> -	seq_printf(m, ":%s", tp->call.name);
> +	seq_printf(m, ":%s/%s", tp->call.system, tp->call.name);
>  
>  	if (tp->symbol)
>  		seq_printf(m, " %s+%u", probe_symbol(tp), tp->rp.kp.offset);
> 
> 

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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