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Subject: Re: [PATCH 06/19] perf metric: Add add_metric function
To:     Jiri Olsa <jolsa@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Ian Rogers <irogers@google.com>,
        lkml <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Michael Petlan <mpetlan@redhat.com>,
        Andi Kleen <ak@linux.intel.com>,
        John Garry <john.garry@huawei.com>,
        "Paul A. Clarke" <pc@us.ibm.com>,
        Stephane Eranian <eranian@google.com>
References: <20200719181320.785305-1-jolsa@kernel.org>
 <20200719181320.785305-7-jolsa@kernel.org>
From:   kajoljain <kjain@linux.ibm.com>
Message-ID: <f1b7bcb2-2dda-2ff8-79fa-62c831ba0d61@linux.ibm.com>
Date:   Sun, 26 Jul 2020 14:47:53 +0530
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On 7/19/20 11:43 PM, Jiri Olsa wrote:
> Decouple metric adding logging into add_metric function,
> so it can be used from other places in following changes.
> 
> Acked-by: Ian Rogers <irogers@google.com>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---

Reviewed-By : Kajol Jain<kjain@linux.ibm.com>

Thanks,
Kajol Jain
>  tools/perf/util/metricgroup.c | 62 ++++++++++++++++++++---------------
>  1 file changed, 36 insertions(+), 26 deletions(-)
> 
> diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> index b37008fc253c..4096be7a7a9e 100644
> --- a/tools/perf/util/metricgroup.c
> +++ b/tools/perf/util/metricgroup.c
> @@ -625,6 +625,39 @@ static int __metricgroup__add_metric(struct list_head *group_list,
>  		    (match_metric(__pe->metric_group, __metric) ||	\
>  		     match_metric(__pe->metric_name, __metric)))
>  
> +static int add_metric(struct list_head *group_list,
> +		      struct pmu_event *pe,
> +		      bool metric_no_group)
> +{
> +	int ret = 0;
> +
> +	pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
> +
> +	if (!strstr(pe->metric_expr, "?")) {
> +		ret = __metricgroup__add_metric(group_list,
> +						pe,
> +						metric_no_group,
> +						1);
> +	} else {
> +		int j, count;
> +
> +		count = arch_get_runtimeparam();
> +
> +		/* This loop is added to create multiple
> +		 * events depend on count value and add
> +		 * those events to group_list.
> +		 */
> +
> +		for (j = 0; j < count && !ret; j++) {
> +			ret = __metricgroup__add_metric(
> +				group_list, pe,
> +				metric_no_group, j);
> +		}
> +	}
> +
> +	return ret;
> +}
> +
>  static int metricgroup__add_metric(const char *metric, bool metric_no_group,
>  				   struct strbuf *events,
>  				   struct list_head *group_list,
> @@ -636,34 +669,11 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
>  	bool has_match = false;
>  
>  	map_for_each_metric(pe, i, map, metric) {
> -		pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
>  		has_match = true;
>  
> -		if (!strstr(pe->metric_expr, "?")) {
> -			ret = __metricgroup__add_metric(group_list,
> -							pe,
> -							metric_no_group,
> -							1);
> -			if (ret)
> -				return ret;
> -		} else {
> -			int j, count;
> -
> -			count = arch_get_runtimeparam();
> -
> -			/* This loop is added to create multiple
> -			 * events depend on count value and add
> -			 * those events to group_list.
> -			 */
> -
> -			for (j = 0; j < count; j++) {
> -				ret = __metricgroup__add_metric(
> -					group_list, pe,
> -					metric_no_group, j);
> -				if (ret)
> -					return ret;
> -			}
> -		}
> +		ret = add_metric(group_list, pe, metric_no_group);
> +		if (ret)
> +			return ret;
>  	}
>  
>  	/* End of pmu events. */
>