linux-kernel - Re: [PATCH] perf tools: Allow multiple threads or processes in record, stat, top

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Date:	Thu, 9 Feb 2012 12:44:51 -0200
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	David Ahern <dsahern@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Namhyung Kim <namhyung@...il.com>,
	linux-kernel@...r.kernel.org, peterz@...radead.org,
	fweisbec@...il.com, paulus@...ba.org, tglx@...utronix.de
Subject: Re: [PATCH] perf tools: Allow multiple threads or processes in
 record, stat, top

Em Thu, Feb 09, 2012 at 12:34:49PM -0200, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Feb 09, 2012 at 08:37:27AM +0100, Ingo Molnar escreveu:
> > 
> > * David Ahern <dsahern@...il.com> wrote:
> > 
> > > > I was trying to remove ctype.h, you might use util.h here.
> > > 
> > > Right, knew that. But, in this case I am adding a call to 
> > > isdigit which means a direct dependency on ctype.h. I would 
> > > prefer a direct relationship versus an indirect via util.h
> > 
> > Please just remove ctype.h *altogether* from perf, it's just an 
> > insane header.
> > 
> > Have a look at how Git solves these types of problems, it 
> > defines sane string functions in git-compat-util.h:
> 
> Yeah, these are in util.h, that doesn't includes ctype.h
> 
> I'm fixing this up and also that s/UUID/UID/g Kim pointed out,
> then testing if the python binding still is ok with these changes.

[root@...nha linux]# tools/perf/python/twatch.py 
Traceback (most recent call last):
  File "tools/perf/python/twatch.py", line 16, in <module>
    import perf
ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol:
ui__error
[root@...nha linux]#

it breaks, I'll check an alternative way to report problems without
calling ui__ methods from thread_map.

- Arnaldo
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