Move getrusage() out of thread_stat

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fio.c b/fio.c
index baa17cf..765c517 100644
--- a/fio.c
+++ b/fio.c
@@ -1169,7 +1169,7 @@
 	}
 
 	fio_gettime(&td->epoch, NULL);
-	getrusage(RUSAGE_SELF, &td->ts.ru_start);
+	getrusage(RUSAGE_SELF, &td->ru_start);
 
 	clear_state = 0;
 	while (keep_running(td)) {
diff --git a/fio.h b/fio.h
index 12b3e3d..d540645 100644
--- a/fio.h
+++ b/fio.h
@@ -192,8 +192,6 @@
 	/*
 	 * fio system usage accounting
 	 */
-	struct rusage ru_start;
-	struct rusage ru_end;
 	uint64_t usr_time;
 	uint64_t sys_time;
 	uint64_t ctx;
@@ -432,6 +430,9 @@
 	uint64_t stat_io_bytes[2];
 	struct timeval stat_sample_time[2];
 
+	struct rusage ru_start;
+	struct rusage ru_end;
+
 	struct fio_file **files;
 	unsigned int files_size;
 	unsigned int files_index;
diff --git a/stat.c b/stat.c
index 17245d9..4bae576 100644
--- a/stat.c
+++ b/stat.c
@@ -14,18 +14,18 @@
 {
 	struct thread_stat *ts = &td->ts;
 
-	getrusage(RUSAGE_SELF, &ts->ru_end);
+	getrusage(RUSAGE_SELF, &td->ru_end);
 
-	ts->usr_time += mtime_since(&ts->ru_start.ru_utime,
-					&ts->ru_end.ru_utime);
-	ts->sys_time += mtime_since(&ts->ru_start.ru_stime,
-					&ts->ru_end.ru_stime);
-	ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw
-			- (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
-	ts->minf += ts->ru_end.ru_minflt - ts->ru_start.ru_minflt;
-	ts->majf += ts->ru_end.ru_majflt - ts->ru_start.ru_majflt;
+	ts->usr_time += mtime_since(&td->ru_start.ru_utime,
+					&td->ru_end.ru_utime);
+	ts->sys_time += mtime_since(&td->ru_start.ru_stime,
+					&td->ru_end.ru_stime);
+	ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw
+			- (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
+	ts->minf += td->ru_end.ru_minflt - td->ru_start.ru_minflt;
+	ts->majf += td->ru_end.ru_majflt - td->ru_start.ru_majflt;
 
-	memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
+	memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
 }
 
 /*