diff options
author | Sven Eckelmann <sven@narfation.org> | 2016-06-25 17:44:06 +0300 |
---|---|---|
committer | Simon Wunderlich <sw@simonwunderlich.de> | 2016-08-09 08:54:32 +0300 |
commit | 86452f81d200d4d6ad489ef84311030eff84dd84 (patch) | |
tree | 6d83f692b7ae449a46400cc25a733abb5e7b4052 /net/batman-adv/main.c | |
parent | a65e5481315e0754a20f58aa374423610a311f33 (diff) | |
download | linux-86452f81d200d4d6ad489ef84311030eff84dd84.tar.xz |
batman-adv: use kmem_cache for translation table
The translation table (global, local) is usually the part of batman-adv
which has the most dynamical allocated objects. Most of them
(tt_local_entry, tt_global_entry, tt_orig_list_entry, tt_change_node,
tt_req_node, tt_roam_node) are equally sized. So it makes sense to have
them allocated from a kmem_cache for each type.
This approach allowed a small wireless router (TP-Link TL-841NDv8; SLUB
allocator) to store 34% more translation table entries compared to the
current implementation.
[1] https://open-mesh.org/projects/batman-adv/wiki/Kmalloc-kmem-cache-tests
Reported-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv/main.c')
-rw-r--r-- | net/batman-adv/main.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index f61479b5a99d..ef07e5b34415 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -82,6 +82,12 @@ static void batadv_recv_handler_init(void); static int __init batadv_init(void) { + int ret; + + ret = batadv_tt_cache_init(); + if (ret < 0) + return ret; + INIT_LIST_HEAD(&batadv_hardif_list); batadv_algo_init(); @@ -93,9 +99,8 @@ static int __init batadv_init(void) batadv_tp_meter_init(); batadv_event_workqueue = create_singlethread_workqueue("bat_events"); - if (!batadv_event_workqueue) - return -ENOMEM; + goto err_create_wq; batadv_socket_init(); batadv_debugfs_init(); @@ -108,6 +113,11 @@ static int __init batadv_init(void) BATADV_SOURCE_VERSION, BATADV_COMPAT_VERSION); return 0; + +err_create_wq: + batadv_tt_cache_destroy(); + + return -ENOMEM; } static void __exit batadv_exit(void) @@ -123,6 +133,8 @@ static void __exit batadv_exit(void) batadv_event_workqueue = NULL; rcu_barrier(); + + batadv_tt_cache_destroy(); } int batadv_mesh_init(struct net_device *soft_iface) |