perf script: Fix named threads support

Commit 73994dc broke named thread support in perf-script. The thread
struct in al is the main thread for a multithreaded process. The thread
struct used for analysis (e.g., dumping events) should be the specific
thread for the sample.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Feng Tang <feng.tang@intel.com>
Link: http://lkml.kernel.org/r/1374185175-28272-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 669a64a..fafe1a4 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -9,6 +9,7 @@
 struct perf_sample;
 union perf_event;
 struct perf_tool;
+struct thread;
 
 extern struct pevent *perf_pevent;
 
@@ -68,7 +69,8 @@
 			       struct perf_sample *sample,
 			       struct perf_evsel *evsel,
 			       struct machine *machine,
-			       struct addr_location *al);
+			       struct thread *thread,
+				   struct addr_location *al);
 	int (*generate_script) (struct pevent *pevent, const char *outfile);
 };