batman-adv: use kmem_cache for translation table

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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>

...

This commit is contained in:

Sven Eckelmann 2016-06-25 16:44:06 +02:00 • committed by Simon Wunderlich

parent a65e548131

commit 86452f81d2

3 changed files with 169 additions and 19 deletions

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16

net/batman-adv/main.c

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169

net/batman-adv/translation-table.c

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3

net/batman-adv/translation-table.h

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