perf tools: Make event__preprocess_sample parse the sample

Simplifying the tools that were using both in sequence and allowing
upcoming simplifications, such as Arun's patch to sort by cpus.

Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 8577085..887ee63bb 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -157,8 +157,9 @@
 
 struct addr_location;
 int event__preprocess_sample(const event_t *self, struct perf_session *session,
-			     struct addr_location *al, symbol_filter_t filter);
-int event__parse_sample(event_t *event, u64 type, struct sample_data *data);
+			     struct addr_location *al, struct sample_data *data,
+			     symbol_filter_t filter);
+int event__parse_sample(const event_t *event, u64 type, struct sample_data *data);
 
 extern const char *event__name[];