linux-kernel - Re: [RFC PATCH v2 10/13] perf metricgroup: Split up metricgroup__add

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Message-ID: <20200422114432.GH962614@krava>
Date:   Wed, 22 Apr 2020 13:44:32 +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: [RFC PATCH v2 10/13] perf metricgroup: Split up
 metricgroup__add_metric()

On Fri, Apr 17, 2020 at 06:41:21PM +0800, John Garry wrote:

SNIP

>  static int metricgroup__add_metric(const char *metric, struct strbuf *events,
>  				   struct list_head *group_list)
>  {
> @@ -502,37 +542,12 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
>  			break;
>  		if (!pe->metric_expr)
>  			continue;
> -		if (match_metric(pe->metric_group, metric) ||
> -		    match_metric(pe->metric_name, metric)) {
> -			const char **ids;
> -			int idnum;
> -			struct egroup *eg;
> -
> -			pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
>  
> -			if (expr__find_other(pe->metric_expr,
> -					     NULL, &ids, &idnum) < 0)
> -				continue;
> -			if (events->len > 0)
> -				strbuf_addf(events, ",");
> -
> -			if (metricgroup__has_constraint(pe))
> -				metricgroup__add_metric_non_group(events, ids, idnum);
> -			else
> -				metricgroup__add_metric_weak_group(events, ids, idnum);
> -
> -			eg = malloc(sizeof(struct egroup));
> -			if (!eg) {
> -				ret = -ENOMEM;
> -				break;
> -			}
> -			eg->ids = ids;
> -			eg->idnum = idnum;
> -			eg->metric_name = pe->metric_name;
> -			eg->metric_expr = pe->metric_expr;
> -			eg->metric_unit = pe->unit;
> -			list_add_tail(&eg->nd, group_list);
> -			ret = 0;

also this place got changed just recently a lot,
so you might want to rebase to the Arnaldo's latest perf/core

jirka

> +		if (match_pe_metric(pe, metric)) {
> +			ret = metricgroup__add_metric_pmu_event(pe, events,
> +								group_list);
> +			if (ret)
> +				return ret;
>  		}
>  	}
>  	return ret;
> -- 
> 2.16.4
>