linux-kernel - Re: [PATCH 07/10] perf, tools: Expand PMU events by prefix match

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Date:   Wed, 8 Feb 2017 12:30:57 +0100
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 07/10] perf, tools: Expand PMU events by prefix match

On Fri, Jan 27, 2017 at 06:03:42PM -0800, Andi Kleen wrote:

SNIP

>  enum perf_pmu_event_symbol_type
>  perf_pmu__parse_check(const char *name);
>  void parse_events__set_leader(char *name, struct list_head *list);
> diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
> index 3a5196380609..1c2788f69bf1 100644
> --- a/tools/perf/util/parse-events.y
> +++ b/tools/perf/util/parse-events.y
> @@ -224,68 +224,55 @@ event_pmu:
>  PE_NAME opt_event_config
>  {
>  	struct parse_events_evlist *data = _data;
> -	struct list_head *list;
> +	struct list_head *list, *orig_terms, *terms;
> +
> +	if (parse_events_copy_term_list($2, &orig_terms))
> +		YYABORT;
>  
>  	ALLOC_LIST(list);
> -	ABORT_ON(parse_events_add_pmu(data, list, $1, $2));
> +	if (parse_events_add_pmu(data, list, $1, $2)) {
> +		struct perf_pmu *pmu = NULL;
> +		int ok = 0;
> +
> +		while ((pmu = perf_pmu__scan(pmu)) != NULL) {
> +			char *name = pmu->name;
> +
> +			if (!strncmp(name, "uncore_", 7) &&
> +			    strncmp($1, "uncore_", 7))
> +				name += 7;
> +			if (!strncmp($1, name, strlen($1))) {
> +				if (parse_events_copy_term_list(orig_terms, &terms))
> +					YYABORT;
> +				if (!parse_events_add_pmu(data, list, pmu->name, terms))
> +					ok++;
> +				parse_events_terms__delete(terms);

could you please split this into 2 changes:
  - adding parse_events_multi_pmu_add with no functional changes
  - uncore box related matching

thanks,
jirka