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Wed, 10 Sep 2025 08:01:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 6GVeOkIwwWgGJAAAD6G6ig (envelope-from ); Wed, 10 Sep 2025 08:01:06 +0000 From: Vlastimil Babka Date: Wed, 10 Sep 2025 10:01:17 +0200 Subject: [PATCH v8 15/23] maple_tree: use percpu sheaves for maple_node_cache MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250910-slub-percpu-caches-v8-15-ca3099d8352c@suse.cz> References: <20250910-slub-percpu-caches-v8-0-ca3099d8352c@suse.cz> In-Reply-To: <20250910-slub-percpu-caches-v8-0-ca3099d8352c@suse.cz> To: Suren Baghdasaryan , "Liam R. Howlett" , Christoph Lameter , David Rientjes Cc: Roman Gushchin , Harry Yoo , Uladzislau Rezki , Sidhartha Kumar , linux-mm@kvack.org, linux-kernel@vger.kernel.org, rcu@vger.kernel.org, maple-tree@lists.infradead.org, vbabka@suse.cz X-Mailer: b4 0.14.2 X-Rspamd-Action: no action X-Rspamd-Queue-Id: DCCEF100002 X-Rspam-User: X-Rspamd-Server: rspam07 X-Stat-Signature: x37rd9i5gn56g7nkaqsefj7wmxtgnzh6 X-HE-Tag: 1757491318-908484 X-HE-Meta: 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 0kGhkBJQ CiAqQH497jmLciUbB49bMXIVk9dEdSxLGT6J4CFvAZnRA0XDTwAEPYedoBYlxKQFyENplvtagCrtRyLZgIN4qHsCiWVC4MreuxAQdYVwSqATVxFbYK4Sr7NVnRuEO+50JNybI6Zb5hhgCi6j6lO/CbOduPaCKUcJ1sVwqVTDFD2L7nTHDi1Cmk3+pUaXU/mANrYhcbjnxvZADyEmxUxlasAdwH7xMWdktQmjSb7ZZ3Qx9J8d0ZSi6r3jYApi+Y7rgfbVbM5DCE8cviDuoCnQEzhX8bNg73I/FmEFTBClAAaKCEkGY/5ezclpBWQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 4f0e30b57b0cef9e5cf791f3f64f5898752db402..d034f170ac897341b40cfd050b6aee86b6d2cf60 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