Commit 59faa4da authored by Vlastimil Babka's avatar Vlastimil Babka
Browse files

maple_tree: use percpu sheaves for maple_node_cache 



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: default avatarSidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: default avatarSuren Baghdasaryan <surenb@google.com>
Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
parent 3accabda

lib/maple_tree.c

+7 −2
Original line number Diff line number Diff line
@@ -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);

}



/**