linux-kernel - Re: [PATCH 3/4] perf hist browser: Fix column indentation on --hierarchy

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Date:   Wed, 9 Nov 2016 11:45:51 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Jiri Olsa <jolsa@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Markus Trippelsdorf <markus@...ppelsdorf.de>
Subject: Re: [PATCH 3/4] perf hist browser: Fix column indentation on
 --hierarchy

Em Tue, Nov 08, 2016 at 10:08:32PM +0900, Namhyung Kim escreveu:
> When horizontall scrolling is used in hierarchy mode, the the right most
> column has unnecessary indentation.  Actually it's needed only if some
> of left (overhead) columns were shown.

I see, here is the fix, thanks, testing it now...

- Arnaldo
 
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/ui/browsers/hists.c | 19 +++++++++++++------
>  1 file changed, 13 insertions(+), 6 deletions(-)
> 
> diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
> index 7722ad311318..15b29a79a69b 100644
> --- a/tools/perf/ui/browsers/hists.c
> +++ b/tools/perf/ui/browsers/hists.c
> @@ -1361,8 +1361,10 @@ static int hist_browser__show_hierarchy_entry(struct hist_browser *browser,
>  		width -= hpp.buf - s;
>  	}
>  
> -	ui_browser__write_nstring(&browser->b, "", hierarchy_indent);
> -	width -= hierarchy_indent;
> +	if (!first) {
> +		ui_browser__write_nstring(&browser->b, "", hierarchy_indent);
> +		width -= hierarchy_indent;
> +	}
>  
>  	if (column >= browser->b.horiz_scroll) {
>  		char s[2048];
> @@ -1565,6 +1567,7 @@ static int hists_browser__scnprintf_hierarchy_headers(struct hist_browser *brows
>  	if (advance_hpp_check(&dummy_hpp, ret))
>  		return ret;
>  
> +	first_node = true;
>  	/* the first hpp_list_node is for overhead columns */
>  	fmt_node = list_first_entry(&hists->hpp_formats,
>  				    struct perf_hpp_list_node, list);
> @@ -1579,12 +1582,16 @@ static int hists_browser__scnprintf_hierarchy_headers(struct hist_browser *brows
>  		ret = scnprintf(dummy_hpp.buf, dummy_hpp.size, "  ");
>  		if (advance_hpp_check(&dummy_hpp, ret))
>  			break;
> +
> +		first_node = false;
>  	}
>  
> -	ret = scnprintf(dummy_hpp.buf, dummy_hpp.size, "%*s",
> -			indent * HIERARCHY_INDENT, "");
> -	if (advance_hpp_check(&dummy_hpp, ret))
> -		return ret;
> +	if (!first_node) {
> +		ret = scnprintf(dummy_hpp.buf, dummy_hpp.size, "%*s",
> +				indent * HIERARCHY_INDENT, "");
> +		if (advance_hpp_check(&dummy_hpp, ret))
> +			return ret;
> +	}
>  
>  	first_node = true;
>  	list_for_each_entry_continue(fmt_node, &hists->hpp_formats, list) {
> -- 
> 2.10.1