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Message-ID: <1261171790.20899.675.camel@laptop>
Date: Fri, 18 Dec 2009 22:29:50 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Arnaldo Carvalho de Melo <acme@...radead.org>
Cc: Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
Frédéric Weisbecker <fweisbec@...il.com>,
Mike Galbraith <efault@....de>,
Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH 1/1] perf record: We should fork only if a program was
specified to run
On Fri, 2009-12-18 at 18:58 -0200, Arnaldo Carvalho de Melo wrote:
> > > - if (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0) {
> > > + if (target_pid == -1 && argc > 0 &&
> > > + (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
> > > perror("failed to create pipes");
> > > exit(-1);
> > > }
Also, there's an unconditional close() a bit further down.
If not for that, I'd have put the whole mkpipe thing in the if
(target_pid == -1) branch.
Maybe I shouldn't have skimped on the extra state for that close
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