From 59faa4da7cd4565cbce25358495556b75bb37022 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Wed, 3 Sep 2025 14:59:55 +0200 Subject: [PATCH] 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: Sidhartha Kumar Reviewed-by: Suren Baghdasaryan Signed-off-by: Vlastimil Babka --- lib/maple_tree.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 4f0e30b57b0c..d034f170ac89 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -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); } /** -- 2.51.0