linux-kernel - Re: [RFC] hotkey for disabling/enabling events in 'perf top' TUI was Re: [GIT PULL 0/8] perf/core improvements and fixes

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Message-ID: <20150618213949.GH3079@kernel.org>
Date:	Thu, 18 Jun 2015 18:39:49 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Adrian Hunter <adrian.hunter@...el.com>,
	Borislav Petkov <bp@...e.de>, David Ahern <dsahern@...il.com>,
	Don Zickus <dzickus@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	He Kuang <hekuang@...wei.com>, Jiri Olsa <jolsa@...hat.com>,
	Li Zhang <zhlcindy@...ux.vnet.ibm.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Naohiro Aota <naota@...sp.net>,
	Peter Zijlstra <peterz@...radead.org>, pi3orama@....com,
	Stephane Eranian <eranian@...gle.com>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Wang Nan <wangnan0@...wei.com>, Zefan Li <lizefan@...wei.com>
Subject: Re: [RFC] hotkey for disabling/enabling events in 'perf top' TUI was
 Re: [GIT PULL 0/8] perf/core improvements and fixes

Em Thu, Jun 18, 2015 at 10:58:13PM +0200, Ingo Molnar escreveu:
> * Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> > > Btw., it would be nice if the status line carried information about whether 
> > > collection is 'frozen' or running, at a glance. A hint might also suggest how to 
> > > unfreeze the session - in case someone pressed Ctrl-Z to suspend the perf top 
> > > session ...
> > 
> > Right, and I think we better find other hotkey and make Ctrl+Z work like
> > with other tools, i.e. suspend:
> > 
> > [acme@zoo linux]$ mutt
> > 
> > [1]+  Stopped                 mutt
> > [acme@zoo linux]$ vim
> > 
> > [2]+  Stopped                 vim
> > [acme@zoo linux]$ 
> > 
> > The perf TUI should work like that as well...
> > 
> > Ideas?
> > 
> > We already have:
> > 
> > h/?/F1        Show this window
> > UP/DOWN/PGUP
<SNIP>
> > z             Toggle zeroing of samples 
> > /             Filter symbol by name 
> 
> Is 'f' (for 'freeze') still available?

It is available in both the 'report'/'top' (aka the "hists" browser) and
in the annotate browser, so I'll go with it, and leave CTRL+z alone,
then make it it suspend.

- Arnaldo
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