gfio: add os resource usage and io depth display

IO depths is a bit of a hack, needs work.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/stat.c b/stat.c
index 0fd8b72..8b032b8 100644
--- a/stat.c
+++ b/stat.c
@@ -285,11 +285,7 @@
 	}
 }
 
-#define ts_total_io_u(ts)	\
-	((ts)->total_io_u[0] + (ts)->total_io_u[1])
-
-static void stat_calc_dist(unsigned int *map, unsigned long total,
-			   double *io_u_dist)
+void stat_calc_dist(unsigned int *map, unsigned long total, double *io_u_dist)
 {
 	int i;