linux-kernel - Re: [PATCH 09/21] perf ui/hist: Add support to accumulated hist stat

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Message-ID: <20140106143012.GC1183@krava.brq.redhat.com>
Date:	Mon, 6 Jan 2014 15:30:12 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Arun Sharma <asharma@...com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Rodrigo Campos <rodrigo@...g.com.ar>
Subject: Re: [PATCH 09/21] perf ui/hist: Add support to accumulated hist stat

On Mon, Jan 06, 2014 at 05:32:16PM +0900, Namhyung Kim wrote:
> On Sun, 5 Jan 2014 18:31:13 +0100, Jiri Olsa wrote:
> > On Tue, Dec 24, 2013 at 05:22:15PM +0900, Namhyung Kim wrote:
> >> +#define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
> >> +static u64 he_get_acc_##_field(struct hist_entry *he)				\
> >> +{										\
> >> +	return he->stat_acc->_field;						\
> >> +}										\
> >> +										\
> >> +static int hpp__color_acc_##_type(struct perf_hpp_fmt *fmt __maybe_unused,	\
> >> +			      struct perf_hpp *hpp, struct hist_entry *he) 	\
> >> +{										\
> >> +	return __hpp__fmt(hpp, he, he_get_acc_##_field, " %6.2f%%",		\
> >> +			  (hpp_snprint_fn)percent_color_snprintf, true);	\
> >> +}
> >> +
> >> +#define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
> >> +static int hpp__entry_acc_##_type(struct perf_hpp_fmt *_fmt __maybe_unused,	\
> >> +			      struct perf_hpp *hpp, struct hist_entry *he) 	\
> >> +{										\
> >> +	const char *fmt = symbol_conf.field_sep ? " %.2f" : " %6.2f%%";		\
> >> +	return __hpp__fmt(hpp, he, he_get_acc_##_field, fmt,			\
> >> +			  scnprintf, true);					\
> >> +}
> >> +
> >>  #define __HPP_ENTRY_RAW_FN(_type, _field)					\
> >>  static u64 he_get_raw_##_field(struct hist_entry *he)				\
> >>  {										\
> >> @@ -148,17 +170,25 @@ __HPP_WIDTH_FN(_type, _min_width, _unit_width)				\
> >>  __HPP_COLOR_PERCENT_FN(_type, _field)					\
> >>  __HPP_ENTRY_PERCENT_FN(_type, _field)
> >>  
> >> +#define HPP_PERCENT_ACC_FNS(_type, _str, _field, _min_width, _unit_width)\
> >> +__HPP_HEADER_FN(_type, _str, _min_width, _unit_width)			\
> >> +__HPP_WIDTH_FN(_type, _min_width, _unit_width)				\
> >> +__HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
> >> +__HPP_ENTRY_ACC_PERCENT_FN(_type, _field)
> >
> > how about add 'stat|stat_acc' parameter to the HPP_PERCENT_FNS
> > macro and use it like:
> >
> > #define __HPP_COLOR_PERCENT_FN(_type, _field, _stat)                            \
> > static u64 he_get_##_stat##_field(struct hist_entry *he)                        \
> > {                                                                               \
> >         return he->##_stat._field;                                              \
> > }                                                                               \
> >
> >
> > and use 'he_get_##_stat##_field' in __HPP_ENTRY_PERCENT_FN
> >
> > This way you dont need to duplicate the code, that differs
> > only in the used stat data.. but it's possible I missed
> > something ;-)
> 
> The problem is that he->stat is a in-struct data but ->stat_acc is
> dynamically allocated.  So it should be 
> 
>   "he->stat. ## _field"
>            ~
> vs.
> 
>   "he->stat_acc-> ## _field"
>                ~~

I see.. maybe some other 'is_pointer' parameter is better
then duplicating the code.. but it's not that big anyway.. nevermind ;-)

> >
> > btw just noticed __HPP_COLOR_PERCENT_FN does not use _type
> 
> ???  It's used in hpp__color_##_type().

aah ok, missed that

thanks,
jirka
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