linux-kernel - [PULL 1/2] perf/tool: Fix usage of trace events with '-' in trace system name.

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Date:	Wed,  9 Apr 2014 16:21:58 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	linux-kernel@...r.kernel.org, KVM <kvm@...r.kernel.org>,
	Alexander Yarygin <yarygin@...ux.vnet.ibm.com>,
	Christian Borntraeger <borntraeger@...ibm.com>
Subject: [PULL 1/2] perf/tool: Fix usage of trace events with '-' in trace system name.

From: Alexander Yarygin <yarygin@...ux.vnet.ibm.com>

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 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 <yarygin@...ux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
---
 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 ','; }
-- 
1.7.9.5

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