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

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Date:	Wed, 15 Jan 2014 13:10:44 +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>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH/RFC] perf ui/tui: Show column header in hist browser

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

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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