linux-kernel - Re: [PATCH 1/4] perf probe: Delete an unnecessary check in try_to_find_absolute

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Date:   Tue, 24 Jan 2017 07:48:09 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        He Kuang <hekuang@...wei.com>, Ingo Molnar <mingo@...hat.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Milian Wolff <milian.wolff@...b.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>,
        Wang Nan <wangnan0@...wei.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/4] perf probe: Delete an unnecessary check in
 try_to_find_absolute_address()

On Mon, 23 Jan 2017 16:22:22 +0100
SF Markus Elfring <elfring@...rs.sourceforge.net> wrote:

> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Mon, 23 Jan 2017 14:54:26 +0100
> 
> Remove a condition check which is unnecessary at the end
> because this source code place should usually only be reached
> with a non-zero pointer.

Looks good to me :)

Acked-by: Masami Hiramatsu <mhiramat@...nel.org>

Thanks!

> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  tools/perf/util/probe-event.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
> index d281ae2b54e8..6c7508337fe8 100644
> --- a/tools/perf/util/probe-event.c
> +++ b/tools/perf/util/probe-event.c
> @@ -2966,10 +2966,8 @@ static int try_to_find_absolute_address(struct perf_probe_event *pev,
>  	return 1;
>  
>  errout:
> -	if (*tevs) {
> -		clear_probe_trace_events(*tevs, 1);
> -		*tevs = NULL;
> -	}
> +	clear_probe_trace_events(*tevs, 1);
> +	*tevs = NULL;
>  	return err;
>  }
>  
> -- 
> 2.11.0
> 


-- 
Masami Hiramatsu <mhiramat@...nel.org>