linux-kernel - Re: [RFC] perf report: Implement symbol filtering on TUI

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Date:	Thu, 8 Mar 2012 11:44:32 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Namhyung Kim <namhyung.kim@....com>
Cc:	Namhyung Kim <namhyung@...il.com>, Arun Sharma <asharma@...com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org, dsahern@...il.com, ravitillo@....gov,
	khandual@...ux.vnet.ibm.com, robert.richter@....com,
	ming.m.lin@...el.com, vweaver1@...s.utk.edu, andi@...stfloor.org
Subject: Re: [RFC] perf report: Implement symbol filtering on TUI


* Namhyung Kim <namhyung.kim@....com> wrote:

> Hi, Ingo
> 
> 2012-03-07 3:07 PM, Ingo Molnar wrote:
> >
> >* Namhyung Kim <namhyung.kim@....com>  wrote:
> >
> >>As Ingo requested, symbol filtering feature was missing on TUI.
> >>Add 's' key to get input from user, and do simple filtering by
> >>strstr(). To turn filtering off, just enter no name by pressing
> >>'s' followed by ENTER.
> >>
> >>There should be many issues, but I just want to release this
> >>to get some feedbacks.
> >
> >I'd love it if in addition to the hotkey, if I typed the obvious
> >sequence:
> >
> >  $ perf report sched
> >
> >... then it would turn into such a filter automagically.
> >
> 
> Oh, I implemented that already. Please test it! :)

Cool - I tried it out and it works just as it should!

I noticed two details:

 - "perf report sched | less" does not work as expected - such 
   kinds of features should be GUI-frontend agnostic.

 - unknown symbols are not matched, and thus they will show up 
   indiscrimnately even though I only want to see them if the 
  filter is something like '0x' or 'unknown'.

Anyway, apart from these two details:

 Tested-by: Ingo Molnar <mingo@...e.hu>

Thanks,

	Ingo
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