batman-adv: Allow to disable debugfs support

The files provided by batman-adv via debugfs are currently converted to
netlink. Tools which are not yet converted to use the netlink interface may
still rely on the old debugfs files. But systems which already upgraded
their tools can save some space by disabling this feature. The default
configuration of batman-adv on amd64 can reduce the size of the module by
around 11% when this feature is disabled.

    $ size net/batman-adv/batman-adv.ko*
       text    data     bss     dec     hex filename
     150507   10395    4160  165062   284c6 net/batman-adv/batman-adv.ko.y
     137106    7099    2112  146317   23b8d net/batman-adv/batman-adv.ko.n

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

1 files changed, 13 insertions, 2 deletions

diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index 833bb145ba3c..f20742cbae6d 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -73,10 +73,21 @@ config BATMAN_ADV_MCAST
           reduce the air overhead while improving the reliability of
           multicast messages.
 
-config BATMAN_ADV_DEBUG
-        bool "B.A.T.M.A.N. debugging"
+config BATMAN_ADV_DEBUGFS
+        bool "batman-adv debugfs entries"
         depends on BATMAN_ADV
         depends on DEBUG_FS
+        default y
+        help
+          Enable this to export routing related debug tables via debugfs.
+          The information for each soft-interface and used hard-interface can be
+          found under batman_adv/
+
+          If unsure, say Y.
+
+config BATMAN_ADV_DEBUG
+        bool "B.A.T.M.A.N. debugging"
+        depends on BATMAN_ADV_DEBUGFS
         help
           This is an option for use by developers; most people should
           say N here. This enables compilation of support for