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

From: Andi Kleen
Date: Wed Oct 03 2012 - 17:23:00 EST


From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx>
---
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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