linux-kernel - Re: [PATCH v3 4/4] perf report: Add callchain value option

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Date:	Tue, 3 Nov 2015 10:06:27 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Kan Liang <kan.liang@...el.com>
Subject: Re: [PATCH v3 4/4] perf report: Add callchain value option

On Tue, Nov 03, 2015 at 04:18:31PM +0900, Namhyung Kim wrote:

SNIP

> @@ -819,12 +837,26 @@ char *callchain_node__sprintf_value(struct callchain_node *node,
>  				    char *bf, size_t bfsize, u64 total)
>  {
>  	double percent = 0.0;
> -	u64 cumul = callchain_cumul_hits(node);
> +	u64 period = callchain_cumul_hits(node);
> +	int count = callchain_cumul_counts(node);
>  
>  	if (total)
> -		percent = cumul * 100.0 / total;
> +		percent = period * 100.0 / total;
> +	if (callchain_param.mode == CHAIN_FOLDED)
> +		count = node->count;

this could be set/computed below in respective cases

>  
> -	scnprintf(bf, bfsize, "%6.2f%%", percent);
> +	switch (callchain_param.value) {
> +	case CCVAL_PERIOD:
> +		scnprintf(bf, bfsize, "%"PRIu64, period);
> +		break;
> +	case CCVAL_COUNT:
> +		scnprintf(bf, bfsize, "%u", count);
> +		break;
> +	case CCVAL_PERCENT:
> +	default:
> +		scnprintf(bf, bfsize, "%.2f%%", percent);
> +		break;
> +	}
>  	return bf;
>  }
>  
> @@ -832,12 +864,24 @@ int callchain_node__fprintf_value(struct callchain_node *node,
>  				 FILE *fp, u64 total)
>  {
>  	double percent = 0.0;
> -	u64 cumul = callchain_cumul_hits(node);
> +	u64 period = callchain_cumul_hits(node);
> +	int count = callchain_cumul_counts(node);
>  
>  	if (total)
> -		percent = cumul * 100.0 / total;
> -
> -	return percent_color_fprintf(fp, "%.2f%%", percent);
> +		percent = period * 100.0 / total;
> +	if (callchain_param.mode == CHAIN_FOLDED)
> +		count = node->count;
> +

ditto

jirka

> +	switch (callchain_param.value) {
> +	case CCVAL_PERIOD:
> +		return fprintf(fp, "%"PRIu64, period);
> +	case CCVAL_COUNT:
> +		return fprintf(fp, "%u", count);
> +	case CCVAL_PERCENT:
> +	default:
> +		return percent_color_fprintf(fp, "%.2f%%", percent);
> +	}
> +	return 0;
>  }
>  

SNIP
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