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mm/slub: make the description of slab_min_objects helpful in doc 

There is no a value assigned to slab_min_objects by default, it always
is 0 that is initialized by compiler if no assigned value by command line.
min_objects is calculated based on processor numbers in calculate_order().
For more details, see commit 9b2cd506e5 ("slub: Calculate min_objects
based on number of processors.")

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Xiongwei Song 2023-12-15 11:41:50 +08:00 committed by Vlastimil Babka
parent cb109a9d60
commit 98d3b6d98f
1 changed files with 1 additions and 1 deletions
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Documentation/mm/slub.rst
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@ -150,7 +150,7 @@ list_lock once in a while to deal with partial slabs. That overhead is
governed by the order of the allocation for each slab. The allocations governed by the order of the allocation for each slab. The allocations
can be influenced by kernel parameters: can be influenced by kernel parameters:
.. slab_min_objects=x (default 4) .. slab_min_objects=x (default: automatically scaled by number of cpus)
.. slab_min_order=x (default 0) .. slab_min_order=x (default 0)
.. slab_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER)) .. slab_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER))