From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Borntraeger Subject: Re: [PATCH v2] perf/tool: Fix usage of trace events with '-' in trace system name. Date: Thu, 27 Mar 2014 09:45:00 +0100 Message-ID: <5333E50C.9090201@de.ibm.com> References: <87fvm411yi.wl%yarygin@imap.linux.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <87fvm411yi.wl%yarygin@imap.linux.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: Alexander Yarygin , Peter Zijlstra , Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo Cc: Paolo Bonzini , KVM , linux-s390 , Cornelia Huck , linux-kernel@vger.kernel.org, Alexander Yarygin List-ID: On 27/03/14 09:27, Alexander Yarygin wrote: > > Trace events potentially can have a '-' in their trace system name, > e.g. kvm on s390 defines kvm-s390:* tracepoints. > tools/perf could not parse them, because there was no rule for this: > $ sudo ./perf top -e "kvm-s390:*" > invalid or unsupported event: 'kvm-s390:*' > > This patch allows to '-' to be a part of PE_NAME token, so tracepoints > with '-' can be parsed by the event_legacy_tracepoint rule. > Without the patch, perf will not accept such tracepoints in the -e > option. > > Signed-off-by: Alexander Yarygin > Signed-off-by: Christian Borntraeger When doing a V2, you should remove my Signed-off-by. ;-) But at least we can now add my Acked-by: Christian Borntraeger Ingo, Peter, Paul, If you agree with this solution, I would like to have this in the next merge window - maybe cc stable if we consider perf stable relevant. Christian > --- > tools/perf/util/parse-events.l | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l > index 3432995..ca20da7 100644 > --- a/tools/perf/util/parse-events.l > +++ b/tools/perf/util/parse-events.l > @@ -199,7 +199,7 @@ r{num_raw_hex} { return raw(yyscanner); } > {num_hex} { return value(yyscanner, 16); } > > {modifier_event} { return str(yyscanner, PE_MODIFIER_EVENT); } > -{name} { return str(yyscanner, PE_NAME); } > +{name_minus} { return str(yyscanner, PE_NAME); } > "/" { BEGIN(config); return '/'; } > - { return '-'; } > , { BEGIN(event); return ','; } >