perf trace: Use thread_{,_set}_priv helpers

This is mechanical changes only for accounting access to thread->priv
properly in the source level.

Signed-off-by: Namhyung Kim <[e-mail]>
Acked-by: Jiri Olsa <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Frederic Weisbecker <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-trace.c

···
 	if (thread == NULL)
 		goto fail;
 
-	if (thread->priv == NULL)
-		thread->priv = thread_trace__new();
+	if (thread__priv(thread) == NULL)
+		thread__set_priv(thread, thread_trace__new());
 		
-	if (thread->priv == NULL)
+	if (thread__priv(thread) == NULL)
 		goto fail;
 
-	ttrace = thread->priv;
+	ttrace = thread__priv(thread);
 	++ttrace->nr_events;
 
 	return ttrace;
···
 
 static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
 {
-	struct thread_trace *ttrace = thread->priv;
+	struct thread_trace *ttrace = thread__priv(thread);
 
 	if (fd > ttrace->paths.max) {
 		char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *));
···
 static const char *thread__fd_path(struct thread *thread, int fd,
 				   struct trace *trace)
 {
-	struct thread_trace *ttrace = thread->priv;
+	struct thread_trace *ttrace = thread__priv(thread);
 
 	if (ttrace == NULL)
 		return NULL;
···
 {
 	int fd = arg->val;
 	size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
-	struct thread_trace *ttrace = arg->thread->priv;
+	struct thread_trace *ttrace = thread__priv(arg->thread);
 
 	if (ttrace && fd >= 0 && fd <= ttrace->paths.max)
 		zfree(&ttrace->paths.table[fd]);
···
 	FILE *fp = data->fp;
 	size_t printed = data->printed;
 	struct trace *trace = data->trace;
-	struct thread_trace *ttrace = thread->priv;
+	struct thread_trace *ttrace = thread__priv(thread);
 	double ratio;
 
 	if (ttrace == NULL)