linux-kernel - Re: [PATCH/RFC] perf ui/tui: Show column header in hist browser

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Date:	Wed, 15 Jan 2014 11:13:14 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Namhyung Kim <namhyung@...nel.org>,
	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>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH/RFC] perf ui/tui: Show column header in hist browser

Em Wed, Jan 15, 2014 at 01:10:44PM +0100, Jiri Olsa escreveu:
> On Wed, Jan 15, 2014 at 02:08:45PM +0900, Namhyung Kim wrote:
> > Add a line for showing column headers like --stdio.
> 
> https://git.kernel.org/cgit/linux/kernel/git/jolsa/perf.git/commit/?h=perf/lock12&id=1a06d77629cb8870838132688f443b9ca1436026
> 
> ;-) I'll check your change

>From a quick view, your change looks better, i.e. being able to toggle
the header line.

Please let me know what you guys end up agreeing is best.

- Arnaldo
 
> jirka
> 
> > 
> > Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> > ---
> >  tools/perf/ui/browser.c        |  4 +--
> >  tools/perf/ui/browsers/hists.c | 55 ++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 57 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
> > index d11541d4d7d7..441470ba8d2c 100644
> > --- a/tools/perf/ui/browser.c
> > +++ b/tools/perf/ui/browser.c
> > @@ -278,8 +278,8 @@ void ui_browser__hide(struct ui_browser *browser)
> >  static void ui_browser__scrollbar_set(struct ui_browser *browser)
> >  {
> >  	int height = browser->height, h = 0, pct = 0,
> > -	    col = browser->width,
> > -	    row = browser->y - 1;
> > +	    col = browser->width, row = 0;
> > +
> >  
> >  	if (browser->nr_entries > 1) {
> >  		pct = ((browser->index * (browser->height - 1)) /
> > diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
> > index e0ab399d431d..5b94de48f23c 100644
> > --- a/tools/perf/ui/browsers/hists.c
> > +++ b/tools/perf/ui/browsers/hists.c
> > @@ -25,6 +25,7 @@ struct hist_browser {
> >  	struct map_symbol   *selection;
> >  	int		     print_seq;
> >  	bool		     show_dso;
> > +	bool		     show_column_header;
> >  	float		     min_pcnt;
> >  	u64		     nr_pcnt_entries;
> >  };
> > @@ -312,6 +313,57 @@ static void ui_browser__warn_lost_events(struct ui_browser *browser)
> >  
> >  static void hist_browser__update_pcnt_entries(struct hist_browser *hb);
> >  
> > +static void hist_browser__column_header(struct hist_browser *browser)
> > +{
> > +	struct perf_hpp_fmt *fmt;
> > +	struct sort_entry *se;
> > +	struct hists *hists = browser->hists;
> > +	bool show = browser->show_column_header;
> > +	unsigned int width;
> > +
> > +	pthread_mutex_lock(&ui__lock);
> > +
> > +	if (!show)
> > +		goto out;
> > +
> > +	ui_browser__gotorc(&browser->b, 0, 0);
> > +
> > +	perf_hpp__for_each_format(fmt) {
> > +		char buf[128];
> > +		struct perf_hpp hpp = {
> > +			.buf	= buf,
> > +			.size	= sizeof(buf),
> > +			.ptr	= hists_to_evsel(hists),
> > +		};
> > +
> > +		width = fmt->width(fmt, &hpp);
> > +		fmt->header(fmt, &hpp);
> > +
> > +		slsmg_printf(" %-*s", width, hpp.buf);
> > +	}
> > +
> > +	list_for_each_entry(se, &hist_entry__sort_list, list) {
> > +		if (se->elide)
> > +			continue;
> > +
> > +		width = strlen(se->se_header);
> > +		if (!hists__new_col_len(hists, se->se_width_idx, width))
> > +			width = hists__col_len(hists, se->se_width_idx);
> > +
> > +		slsmg_printf("  %-*s", width, se->se_header);
> > +	}
> > +
> > +	/*
> > +	 * We just called ui_browser__refresh_dimensions().
> > +	 * Update it to honor a new column header line.
> > +	 */
> > +	browser->b.y++;
> > +	browser->b.height--;
> > +
> > +out:
> > +	pthread_mutex_unlock(&ui__lock);
> > +}
> > +
> >  static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
> >  			     struct hist_browser_timer *hbt)
> >  {
> > @@ -331,6 +383,8 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
> >  			     "Press '?' for help on key bindings") < 0)
> >  		return -1;
> >  
> > +	hist_browser__column_header(browser);
> > +
> >  	while (1) {
> >  		key = ui_browser__run(&browser->b, delay_secs);
> >  
> > @@ -1198,6 +1252,7 @@ static struct hist_browser *hist_browser__new(struct hists *hists)
> >  		browser->b.refresh = hist_browser__refresh;
> >  		browser->b.seek = ui_browser__hists_seek;
> >  		browser->b.use_navkeypressed = true;
> > +		browser->show_column_header = true;
> >  	}
> >  
> >  	return browser;
> > -- 
> > 1.7.11.7
> > 
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