linux-kernel - Re: [PATCH v2 1/2] perf hists browser: Support horizontal scrolling with '<' and '>' key

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Date:	Sun, 9 Aug 2015 13:21:39 +0200
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>,
	David Ahern <dsahern@...il.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH v2 1/2] perf hists browser: Support horizontal scrolling
 with '<' and '>' key

On Sun, Aug 09, 2015 at 07:35:42PM +0900, Namhyung Kim wrote:
> Hi Jiri,
> 
> On Sun, Aug 09, 2015 at 11:30:24AM +0200, Jiri Olsa wrote:
> > On Sun, Aug 09, 2015 at 05:21:01PM +0900, Namhyung Kim wrote:
> > > Currently perf TUI report browser doesn't support horizontal scrolling.
> > > So if terminal width is smaller than the actual contents, there's no way
> > > to see them.  This patch adds support horizontal movement by '<' and '>'
> > > keys.
> > 
> > nice, I wonder we could also have some way to scroll
> > by the column width.. it might be more eye friendly?
> > would need to try first ;-)
> 
> Good suggesion.  Please see below..
> 
> > 
> > I also tried it with SKIP_COLS_STEP=1, and it wasn't bad
> 
> OK.
> 
> > 
> > how about having several scroll step options? like:
> >      , . - SKIP_COLS_STEP=1
> >      < > - SKIP_COLS_STEP=10
> > CTRL-< > - SKIP_COLS_STEP=columns width
> 
> I tried to use CTRL but it seems not working.
> 
> 
> > 
> > we could also bind some of this to regular arrows
> > with SHIFT or CTRL, bacause it's probably the most
> > convenient binding for this
> 
> Yes, I agree with you.  But I don't know how to bind the arrow keys
> with SHIFT or CTRL to do the thing.  So I just changed that < > to
> make SKIP_COLS_STEP = column width.
> 
> 
> Thanks,
> Namhyung
> 
> 
> 
> From 8e1f0a8be36895f9f37df133dcc8020e123b76e9 Mon Sep 17 00:00:00 2001
> From: Namhyung Kim <namhyung@...nel.org>
> Date: Sun, 9 Aug 2015 19:25:32 +0900
> Subject: [PATCH] perf hists browser: Move to prev/next column start by '<' or
>  '>' keys
> 
> Jiri said that it'd be more eye-friendly if it can move by column
> widths.  So change the keys to do it rather than jumping 10 characters.
> Also add ',' and '.' keys which reside same position in the keyboard to
> move by 1 characters.

I like it ;-)

Tested-by: Jiri Olsa <jolsa@...hat.com>

anyway let's hear some other opinions

thanks,
jirka
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