From nobody Fri Oct 3 19:17:24 2025 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B165933A020 for ; Wed, 27 Aug 2025 08:27:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756283239; cv=none; b=fwCtGATWHJSQzFR3FjmzADvrkHAayqjpprH/UuMv8Ulbj78fZe15/TZtodPk1TpQ++zKR7T1DIALriF++cCSnUH7e9kCy984xwJGAkKMbFS+hLzypOskD3wv5Sak0F5BRc/P2dcktbS8r7N6l/S3t9bL8Rejo3XsqgLiNPyn8jU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756283239; c=relaxed/simple; bh=UlGxvACdv155XrFFrWk0ecsws481oUU4TIOFXFk1vIg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FgPxOfp1SZoXZgAGNUSvmBKcGFEmfiSU+AHSfOAaiOz2mctvcfzs/zxDinEt7jTo3T9f8jz5mRyuj8+3uR1yaii4NScmOecz0+lM7NZY++U8j0R98PA5ljuI2ryDq1aEBe8fyI3NayBVJl99ymnPXO5hz+mkBAZXb8teybPwRAc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz; spf=pass smtp.mailfrom=suse.cz; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=xSTgJhIX; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=SVYIM7N9; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=xSTgJhIX; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=SVYIM7N9; arc=none smtp.client-ip=195.135.223.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.cz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="xSTgJhIX"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="SVYIM7N9"; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="xSTgJhIX"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="SVYIM7N9" Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id CDFAC1FF25; Wed, 27 Aug 2025 08:26:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1756283195; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0KRBIhNrsFaoYAcvZ0YP3W0XTTeCHuYd9glX8HrySn4=; b=xSTgJhIXzLSiuibHPW4pYXFd/u9s/jj08ZTG5dkCAya50kJwjIuH6kUeRPJjHtE7XTNkKY +MdhI1k/ObTywr5+SUtd8soD0Cmn1utHhNAMWheHDHEKhszwoppl5xs8mcNI8Dz7SRCCzY kAqGm4s7/QIxe2Qj9ksRopEHISHLJPE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1756283195; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0KRBIhNrsFaoYAcvZ0YP3W0XTTeCHuYd9glX8HrySn4=; b=SVYIM7N9OfbLAjCujcb/K7N7X7RFZ5jssSiXgju7I7NZ878Mj/thgXlignLIOVkvYO5Pru xC7jP1Mj2uKaEmCQ== Authentication-Results: smtp-out2.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1756283195; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0KRBIhNrsFaoYAcvZ0YP3W0XTTeCHuYd9glX8HrySn4=; b=xSTgJhIXzLSiuibHPW4pYXFd/u9s/jj08ZTG5dkCAya50kJwjIuH6kUeRPJjHtE7XTNkKY +MdhI1k/ObTywr5+SUtd8soD0Cmn1utHhNAMWheHDHEKhszwoppl5xs8mcNI8Dz7SRCCzY kAqGm4s7/QIxe2Qj9ksRopEHISHLJPE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1756283195; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0KRBIhNrsFaoYAcvZ0YP3W0XTTeCHuYd9glX8HrySn4=; b=SVYIM7N9OfbLAjCujcb/K7N7X7RFZ5jssSiXgju7I7NZ878Mj/thgXlignLIOVkvYO5Pru xC7jP1Mj2uKaEmCQ== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id B8C3A13A31; Wed, 27 Aug 2025 08:26:35 +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 mNbSLDvBrmhNfgAAD6G6ig (envelope-from ); Wed, 27 Aug 2025 08:26:35 +0000 From: Vlastimil Babka Date: Wed, 27 Aug 2025 10:26:42 +0200 Subject: [PATCH v6 10/10] maple_tree: use percpu sheaves for maple_node_cache Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250827-slub-percpu-caches-v6-10-f0f775a3f73f@suse.cz> References: <20250827-slub-percpu-caches-v6-0-f0f775a3f73f@suse.cz> In-Reply-To: <20250827-slub-percpu-caches-v6-0-f0f775a3f73f@suse.cz> To: Suren Baghdasaryan , "Liam R. Howlett" , Christoph Lameter , David Rientjes Cc: Roman Gushchin , Harry Yoo , Uladzislau Rezki , 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-Spamd-Result: default: False [-8.30 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; RCPT_COUNT_TWELVE(0.00)[12]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; R_RATELIMIT(0.00)[to_ip_from(RLwn5r54y1cp81no5tmbbew5oc)]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[linux.dev,oracle.com,gmail.com,kvack.org,vger.kernel.org,lists.infradead.org,suse.cz]; MID_RHS_MATCH_FROM(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:mid,suse.cz:email,imap1.dmz-prg2.suse.org:helo] X-Spam-Flag: NO X-Spam-Level: X-Spam-Score: -8.30 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. Signed-off-by: Vlastimil Babka Reviewed-by: Suren Baghdasaryan --- 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 b4ee2d29d7a962ca374467d0533185f2db3d35ff..a0db6bdc63793b8bbd544e24639= 1d99e880dede3 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -6302,9 +6302,14 @@ bool mas_nomem(struct ma_state *mas, gfp_t gfp) =20 void __init maple_tree_init(void) { + struct kmem_cache_args args =3D { + .align =3D sizeof(struct maple_node), + .sheaf_capacity =3D 32, + }; + maple_node_cache =3D kmem_cache_create("maple_node", - sizeof(struct maple_node), sizeof(struct maple_node), - SLAB_PANIC, NULL); + sizeof(struct maple_node), &args, + SLAB_PANIC); } =20 /** --=20 2.51.0