[NET]: Add const markers to various variables.
the patch below marks various variables const in net/; the goal is to
move them to the .rodata section so that they can't false-share
cachelines with things that get written to, as well as potentially
helping gcc a bit with optimisations. (these were found using a gcc
patch to warn about such variables)
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e9c14f4..f701a13 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1371,7 +1371,7 @@
* are needed for AMPRnet AX.25 paths.
*/
-static unsigned short mtu_plateau[] =
+static const unsigned short mtu_plateau[] =
{32000, 17914, 8166, 4352, 2002, 1492, 576, 296, 216, 128 };
static __inline__ unsigned short guess_mtu(unsigned short old_mtu)