linux-kernel - Re: [PATCH v3 2/3] perf record: Propagate exit status of a command line workload

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Message-ID: <20140429113854.GE1148@krava.brq.redhat.com>
Date:	Tue, 29 Apr 2014 13:38:54 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Namhyung Kim <namhyung@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH v3 2/3] perf record: Propagate exit status of a command
 line workload

On Tue, Apr 29, 2014 at 01:33:04PM +0200, Peter Zijlstra wrote:
> On Tue, Apr 29, 2014 at 01:19:39PM +0200, Peter Zijlstra wrote:
> > On Tue, Apr 29, 2014 at 12:56:54PM +0200, Jiri Olsa wrote:
> > > 
> > >   perf_counter tools: Propagate signals properly
> > >   commit f7b7c26e01e51fe46097e11f179dc71ce7950084
> > >   Author: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > >   Date:   Wed Jun 10 15:55:59 2009 +0200
> > > 
> > > but I dont think we need to do that
> > 
> > But but but, then you're re-introducing that fail again? That no good.
> 
> The thing is, just the return value is not sufficient to determine if
> the child was interrupted.
> 
> See WAIT(2), things like WIFSIGNALED() will not work when you just
> propagate the return value, you need to terminate the task with a
> signal to propagate this.
> 

cool, I just asked this in another email ;-) thanks

jirka
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