linux-kernel - [PATCH 2/3] perf, tools: Default to cpu// for events

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Message-Id: <1349299363-30714-3-git-send-email-andi@firstfloor.org>
Date:	Wed,  3 Oct 2012 14:22:42 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	acme@...hat.com
Cc:	jolsa@...hat.com, eranian@...gle.com, a.p.zijlstra@...llo.nl,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 2/3] perf, tools: Default to cpu// for events

From: Andi Kleen <ak@...ux.intel.com>

When an event fails to parse and it's not in a new style format,
try to parse it again as a cpu event.

This allows to use sysfs exported events directly without //, so I can use

perf record -e tx-aborts ...

instead of

perf record -e cpu/tx-aborts/

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/parse-events.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index de1cb9e..4e7117f 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -785,6 +785,16 @@ static int parse_events__scanner(const char *str, void *data, int start_token)
 	parse_events__flush_buffer(buffer, scanner);
 	parse_events__delete_buffer(buffer, scanner);
 	parse_events_lex_destroy(scanner);
+
+	if (ret && !strchr(str, '/')) {
+		char *s = malloc(strlen(str) + strlen("cpu/") + 2);
+
+		if (!s)
+			return ret;
+		sprintf(s, "cpu/%s/", str);
+		str = s;
+		return parse_events__scanner(str, data, start_token);
+	}
 	return ret;
 }
 
-- 
1.7.7.6

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