From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Namhyung Kim To: Robert Richter Cc: Arnaldo Carvalho de Melo , Ingo Molnar , "linux-kernel\@vger.kernel.org" , Jim Cromie , Arnaldo Carvalho de Melo , , Stephane Eranian Subject: Re: [PATCH] perf stat: Fix default logfd to use stderr References: <1317336490-19437-1-git-send-email-acme@infradead.org> <1317336490-19437-8-git-send-email-acme@infradead.org> <20120618145108.GG5046@erda.amd.com> Date: Tue, 19 Jun 2012 11:13:59 +0900 In-Reply-To: <20120618145108.GG5046@erda.amd.com> (Robert Richter's message of "Mon, 18 Jun 2012 16:51:08 +0200") Message-ID: <87zk80giag.fsf@sejong.aot.lge.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: Hi, Robert On Mon, 18 Jun 2012 16:51:08 +0200, Robert Richter wrote: > On 29.09.11 18:48:01, Arnaldo Carvalho de Melo wrote: >> From: Jim Cromie >> >> This perf stat option emulates valgrind's --log-fd option, allowing the >> user to send perf results elsewhere, and leaving stderr for use by the >> program under test. This complements --output file option, and is >> mutually exclusive with it. >> >> 3>results perf stat --log-fd 3 -- $cmd >> 3>>results perf stat --log-fd 3 --append -- $cmd >> >> The perl distro's make test.valgrind target uses valgrind's --log-fd >> option, I've adapted it to invoke perf also, and tested this patch >> there. >> >> Link: http://lkml.kernel.org/r/1315437244-3788-2-git-send-email-jim.cromie@gmail.com >> Signed-off-by: Arnaldo Carvalho de Melo >> Signed-off-by: Jim Cromie >> Signed-off-by: Arnaldo Carvalho de Melo > > With certain shell redirections this (56f3bae) fails with a log fd > setup failure. Fix below. > It looks somewhat related to Stephane's patch. Can you we check it too? http://lkml.indiana.edu/hypermail/linux/kernel/1205.1/04232.html Thanks, Namhyung