[tip:perf/stat] perf tools: Accept case-insensitive symbolic event variants

[tip:perf/stat] perf tools: Accept case-insensitive symbolic event variants

[tip-bot for Ingo Molnar]

Commit-ID:  b908debd4eef91471016138569f7a9e292be682e
Gitweb:     http://git.kernel.org/tip/b908debd4eef91471016138569f7a9e292be682e
Author:     Ingo Molnar <mingo@elte.hu>
AuthorDate: Wed, 27 Apr 2011 03:55:40 +0200
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 26 Apr 2011 20:04:55 +0200

perf tools: Accept case-insensitive symbolic event variants

We currently fail on something like '-e CPU-migrations', with:

  invalid or unsupported event: 'CPU-migrations'

While 'CPU-migrations' is how we actually print out the event
in the default perf stat output:

 Performance counter stats for 'true':

          0.202204 task-clock-msecs         #      0.282 CPUs
                 0 context-switches         #      0.000 M/sec
                 0 CPU-migrations           #      0.000 M/sec

So change the matching to be case-insensitive.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/n/tip-omcm3edjjtx83a4kh2e244se@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/parse-events.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 1869e4c..8e54bdb 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -649,13 +649,15 @@ static int check_events(const char *str, unsigned int i)
 	int n;
 
 	n = strlen(event_symbols[i].symbol);
-	if (!strncmp(str, event_symbols[i].symbol, n))
+	if (!strncasecmp(str, event_symbols[i].symbol, n))
 		return n;
 
 	n = strlen(event_symbols[i].alias);
-	if (n)
-		if (!strncmp(str, event_symbols[i].alias, n))
+	if (n) {
+		if (!strncasecmp(str, event_symbols[i].alias, n))
 			return n;
+	}
+
 	return 0;
 }