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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>
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@ -150,7 +150,7 @@ list_lock once in a while to deal with partial slabs. That overhead is
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governed by the order of the allocation for each slab. The allocations
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can be influenced by kernel parameters:
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.. slab_min_objects=x (default 4)
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.. slab_min_objects=x (default: automatically scaled by number of cpus)
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.. slab_min_order=x (default 0)
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.. slab_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER))
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