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author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2013-12-02 17:49:41 +0900 |
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committer | Pekka Enberg <penberg@kernel.org> | 2014-02-08 12:12:06 +0200 |
commit | f315e3fa1cf5b3317fc948708645fff889ce1e63 (patch) | |
tree | 2c7e3db6b372504ca115c5dcd2b23a8996e4a06a /drivers/video/via | |
parent | e5c58dfdcbd36f6b4c4c92c31cf6753d22da630a (diff) | |
download | blackbird-op-linux-f315e3fa1cf5b3317fc948708645fff889ce1e63.tar.gz blackbird-op-linux-f315e3fa1cf5b3317fc948708645fff889ce1e63.zip |
slab: restrict the number of objects in a slab
To prepare to implement byte sized index for managing the freelist
of a slab, we should restrict the number of objects in a slab to be less
or equal to 256, since byte only represent 256 different values.
Setting the size of object to value equal or more than newly introduced
SLAB_OBJ_MIN_SIZE ensures that the number of objects in a slab is less or
equal to 256 for a slab with 1 page.
If page size is rather larger than 4096, above assumption would be wrong.
In this case, we would fall back on 2 bytes sized index.
If minimum size of kmalloc is less than 16, we use it as minimum object
size and give up this optimization.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'drivers/video/via')
0 files changed, 0 insertions, 0 deletions