linux-kernel - Re: [PATCH] tracing/probes: Delete dead code in trace_eprobe_tp_update

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Date:   Sun, 2 Jul 2023 08:02:38 +0900
From:   Masami Hiramatsu (Google) <mhiramat@...nel.org>
To:     Dan Carpenter <dan.carpenter@...aro.org>
Cc:     Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] tracing/probes: Delete dead code in
 trace_eprobe_tp_update_arg()

On Mon, 26 Jun 2023 16:35:06 +0300
Dan Carpenter <dan.carpenter@...aro.org> wrote:

> This code was recently refactored and now the "ret" variable is always
> zero.  Delete the check for non-zero.
> 

Good catch!

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

> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
> ---
> This code was changed in 1b8b0cd754cd (tracing/probes: Move event
> parameter fetching code to common parser)

OK, this will be picked to the 6.5 fix.

Thank you!

> 
>  kernel/trace/trace_eprobe.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c
> index cb0077ba2b49..b5181d690b4d 100644
> --- a/kernel/trace/trace_eprobe.c
> +++ b/kernel/trace/trace_eprobe.c
> @@ -797,10 +797,7 @@ static int trace_eprobe_tp_update_arg(struct trace_eprobe *ep, const char *argv[
>  		return ret;
>  
>  	/* Handle symbols "@" */
> -	if (!ret)
> -		ret = traceprobe_update_arg(&ep->tp.args[i]);
> -
> -	return ret;
> +	return traceprobe_update_arg(&ep->tp.args[i]);
>  }
>  
>  static int trace_eprobe_parse_filter(struct trace_eprobe *ep, int argc, const char *argv[])
> -- 
> 2.39.2
> 


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>