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/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c
index eacec85..a85e4ae 100644
--- a/tools/perf/util/scripting-engines/trace-event-perl.c
+++ b/tools/perf/util/scripting-engines/trace-event-perl.c
@@ -261,7 +261,8 @@
 				    struct perf_sample *sample,
 				    struct perf_evsel *evsel,
 				    struct machine *machine __maybe_unused,
-				    struct addr_location *al)
+				    struct thread *thread,
+					struct addr_location *al)
 {
 	struct format_field *field;
 	static char handler[256];
@@ -272,7 +273,6 @@
 	int cpu = sample->cpu;
 	void *data = sample->raw_data;
 	unsigned long long nsecs = sample->time;
-	struct thread *thread = al->thread;
 	char *comm = thread->comm;
 
 	dSP;
@@ -351,7 +351,8 @@
 				       struct perf_sample *sample,
 				       struct perf_evsel *evsel,
 				       struct machine *machine __maybe_unused,
-				       struct addr_location *al __maybe_unused)
+				       struct thread *thread __maybe_unused,
+					   struct addr_location *al __maybe_unused)
 {
 	dSP;
 
@@ -377,10 +378,11 @@
 			       struct perf_sample *sample,
 			       struct perf_evsel *evsel,
 			       struct machine *machine,
-			       struct addr_location *al)
+			       struct thread *thread,
+				   struct addr_location *al)
 {
-	perl_process_tracepoint(event, sample, evsel, machine, al);
-	perl_process_event_generic(event, sample, evsel, machine, al);
+	perl_process_tracepoint(event, sample, evsel, machine, thread, al);
+	perl_process_event_generic(event, sample, evsel, machine, thread, al);
 }
 
 static void run_start_sub(void)