linux-kernel - Re: [PATCH 1/2] perf, tools, list: Print aliases with --raw-dump

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Date:   Mon, 19 Sep 2016 10:14:38 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     acme@...nel.org, jolsa@...nel.org, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 1/2] perf, tools, list: Print aliases with --raw-dump

On Sun, Sep 18, 2016 at 11:18:18AM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> Print aliases like 'cycles' with perf list --raw-dump, so that
> they can be completed by perf-completion.sh
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>
> ---
>  tools/perf/util/parse-events.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index 94846271cb1c..9716c2bc6869 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -2191,13 +2191,21 @@ restart:
>  
>  		if (!evt_num_known) {
>  			evt_num++;
> +			if (strlen(syms->alias))
> +				evt_num++;
>  			continue;
>  		}
>  
>  		if (!name_only && strlen(syms->alias))
>  			snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
> -		else
> +		else {
> +			if (strlen(syms->alias)) {
> +				evt_list[evt_i++] = strdup(syms->alias);

why don't you copy syms->alias into name and let the code below do the queue?

thanks,
jirka

> +				if (evt_list[evt_i - 1]  == NULL)
> +					goto out_enomem;
> +			}
>  			strncpy(name, syms->symbol, MAX_NAME_LEN);
> +		}
>  
>  		evt_list[evt_i] = strdup(name);
>  		if (evt_list[evt_i] == NULL)
> -- 
> 2.5.5
>