linux-kernel - Re: [PATCH 2/3] perf/buildid-cache: Support --list option

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Date:   Fri, 13 Apr 2018 14:58:01 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Cc:     acme@...hat.com, mhiramat@...nel.org, kstewart@...uxfoundation.org,
        tglx@...utronix.de, pombredanne@...b.com,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        namhyung@...nel.org, uneedsihyeon@...il.com,
        kjlx@...pleofstupid.com
Subject: Re: [PATCH 2/3] perf/buildid-cache: Support --list option

On Mon, Apr 09, 2018 at 04:36:32PM +0530, Ravi Bangoria wrote:

SNIP

> -		     !remove_name_list_str && !purge_name_list_str &&
> -		     !missing_filename && !update_name_list_str))
> +	opts_flag = add_name_list_str || kcore_filename ||
> +		remove_name_list_str || purge_name_list_str ||
> +		missing_filename || update_name_list_str;
> +
> +	if (argc || !(list_files || opts_flag))
>  		usage_with_options(buildid_cache_usage, buildid_cache_options);
>  
> +	/* -l is exclusive. It can not be used with other options. */
> +	if (list_files && opts_flag)
> +		usage_with_options_msg(buildid_cache_usage,
> +			buildid_cache_options, "-l is exclusive.\n");
> +
>  	if (ns_id > 0)
>  		nsi = nsinfo__new(ns_id);
>  
> @@ -366,6 +396,11 @@ int cmd_buildid_cache(int argc, const char **argv)
>  
>  	setup_pager();
>  
> +	if (list_files) {
> +		build_id_cache__show_all();
> +		goto out;

make build_id_cache__show_all return value and store it to ret before going out

jirka