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maple_tree: use percpu sheaves for maple_node_cache

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Setup the maple_node_cache with percpu sheaves of size 32 to hopefully
improve its performance. Note this will not immediately take advantage
of sheaf batching of kfree_rcu() operations due to the maple tree using
call_rcu with custom callbacks. The followup changes to maple tree will
change that and also make use of the prefilled sheaves functionality.

Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Vlastimil Babka
2025-09-03 14:59:55 +02:00
parent 3accabda4d
commit 59faa4da7c
1 changed files with 7 additions and 2 deletions
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9
lib/maple_tree.c
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@@ -6040,9 +6040,14 @@ bool mas_nomem(struct ma_state *mas, gfp_t gfp)
void __init maple_tree_init(void)
{
struct kmem_cache_args args = {
.align = sizeof(struct maple_node),
.sheaf_capacity = 32,
};
maple_node_cache = kmem_cache_create("maple_node",
sizeof(struct maple_node), sizeof(struct maple_node),
SLAB_PANIC, NULL);
sizeof(struct maple_node), &args,
SLAB_PANIC);
}
/**