linux-kernel - Re: [PATCH RFC v3 02/12] perf jevents: Add support for system events tables

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Date:   Mon, 11 May 2020 13:01:37 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     John Garry <john.garry@...wei.com>
Cc:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        namhyung@...nel.org, will@...nel.org, ak@...ux.intel.com,
        linuxarm@...wei.com, linux-kernel@...r.kernel.org,
        qiangqing.zhang@....com, irogers@...gle.com, robin.murphy@....com,
        zhangshaokun@...ilicon.com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RFC v3 02/12] perf jevents: Add support for system events
 tables

On Thu, May 07, 2020 at 07:57:41PM +0800, John Garry wrote:

SNIP

> +				      &sys_event_tables);
> +		}
> +
>  		print_events_table_prefix(eventsfp, tblname);
>  		return 0;
>  	}
> @@ -1180,7 +1253,6 @@ int main(int argc, char *argv[])
>  	} else if (rc < 0) {
>  		/* Make build fail */
>  		fclose(eventsfp);
> -		free_arch_std_events();
>  		ret = 1;
>  		goto out_free_mapfile;
>  	} else if (rc) {
> @@ -1206,27 +1278,31 @@ int main(int argc, char *argv[])
>  	if (close_table)
>  		print_events_table_suffix(eventsfp);
>  
> -	if (!mapfile) {
> -		pr_info("%s: No CPU->JSON mapping?\n", prog);
> -		goto empty_map;
> +	if (mapfile) {
> +		if (process_mapfile(eventsfp, mapfile)) {
> +			pr_err("%s: Error processing mapfile %s\n", prog,
> +			       mapfile);
> +			/* Make build fail */
> +			fclose(eventsfp);
> +			ret = 1;
> +		}
> +	} else {
> +		pr_err("%s: No CPU->JSON mapping?\n", prog);

shouldn't we jump to empty_map in here? there still needs to be a
mapfile, right?

jirka

>  	}
>  
> -	if (process_mapfile(eventsfp, mapfile)) {
> -		pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
> -		/* Make build fail */
> +	if (process_system_event_tables(eventsfp)) {
>  		fclose(eventsfp);
> -		free_arch_std_events();
>  		ret = 1;
>  	}
>  
> -
>  	goto out_free_mapfile;
>  
>  empty_map:
>  	fclose(eventsfp);
>  	create_empty_mapping(output_file);
> -	free_arch_std_events();
>  out_free_mapfile:
> +	free_arch_std_events();
> +	free_sys_event_tables();
>  	free(mapfile);
>  	return ret;
>  }

SNIP