Revert "Revert "New API to retrieve disk stats in Linux""

This reverts commit 7e214414bf.

sysdeps/common/default.c

@@ -64,6 +64,20 @@ glibtop_get_cpu(glibtop_cpu *buf)
 }
 
 
+/**
+ * glibtop_get_disk:
+ * @buf: A location to return the disk usage.
+ *
+ * Get the DISK usage.
+ *
+ */
+void
+glibtop_get_cpu(glibtop_cpu *buf)
+{
+	glibtop_get_cpu_l(glibtop_global_server, buf);
+}
+
+
 /**
  * glibtop_get_fsusage:
  * @buf: A location to return the file system usage.