perf tools: Move threads & last_match to threads.c

This was just being copy'n'pasted all over.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20091013141629.GD21809@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index fb3f3c2..ccf867d 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -19,9 +19,6 @@
 static unsigned long	total = 0;
 static unsigned long	total_comm = 0;
 
-static struct rb_root	threads;
-static struct thread	*last_match;
-
 static struct perf_header *header;
 static u64		sample_type;
 
@@ -32,9 +29,7 @@
 static int
 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 {
-	struct thread *thread;
-
-	thread = threads__findnew(event->comm.pid, &threads, &last_match);
+	struct thread *thread = threads__findnew(event->comm.pid);
 
 	dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
 		(void *)(offset + head),
@@ -54,14 +49,12 @@
 static int
 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 {
-	struct thread *thread;
 	u64 ip = event->ip.ip;
 	u64 timestamp = -1;
 	u32 cpu = -1;
 	u64 period = 1;
 	void *more_data = event->ip.__more_data;
-
-	thread = threads__findnew(event->ip.pid, &threads, &last_match);
+	struct thread *thread = threads__findnew(event->ip.pid);
 
 	if (sample_type & PERF_SAMPLE_TIME) {
 		timestamp = *(u64 *)more_data;
@@ -135,7 +128,7 @@
 
 static int __cmd_trace(void)
 {
-	register_idle_thread(&threads, &last_match);
+	register_idle_thread();
 	register_perf_file_handler(&file_handler);
 
 	return mmap_dispatch_perf_file(&header, input_name, 0, 0, &cwdlen, &cwd);