Received: by 2002:a05:7412:8d10:b0:f3:1519:9f41 with SMTP id bj16csp2955289rdb; Sat, 9 Dec 2023 05:53:40 -0800 (PST) X-Google-Smtp-Source: AGHT+IFJpoca/SBa4KHPdXCknGyhtHrsZsgEX3GdwfU4va5l9YDRHoHTn7aiOBReyi57MeqTJuTG X-Received: by 2002:a05:6a00:1251:b0:6ce:66e6:8c1e with SMTP id u17-20020a056a00125100b006ce66e68c1emr1060704pfi.50.1702130020246; Sat, 09 Dec 2023 05:53:40 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1702130020; cv=none; d=google.com; s=arc-20160816; b=WzIttR86OGiVp6Eoy32LGsu7WuuxI71ErbA0hSGX/g8pciP7RXZH0G+0PesSwfB3qM dMI9gFx/9/1v3+85Q9an0cnjuGpR/A7kDDXXA0Tqg/XpWLUWQoYl4WlgZ9J97zvETs9N mCITTHaubdulH7ICF4emsfLEBODGAt4eeH1ql/GmlhrhCCFbP2ZxXpHCS1rPOO5sTBL+ CjG6m0HpTZMKyXsOaBHSua62IH5C/NMRrsVbyFKdt3UyUDhuAP/R814qpXVyrM5DGrDR 33oGlHliijNCxOxjR+qkFL0n2fTmR8VkKi+03sNyHHZZeH7wGVfINZh+LU5XaezGdIZ6 +7Eg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=C/CNUr2LNMn6Qo2xusn2tYrx0721oOslxNy000GbTmM=; fh=TocuhJxd18GhrafGtuiOddR0cvtUM4cRDCHJeLgYvTA=; b=Fldt4CXnMBwFLBeMWsAVCqHG0TwZ8zPOa+zJMMe1O20mbMcgD0rBPW3sg9Lk6LHWNi r4S8OOYspVNtS3/16nUE8wfZMqbtCk+fK8XppcErz3tcCHPML0VFQ2TiQ2EbfRoqY0qB /Senx/tGyZR08KnoDEENQBWAmPgdUNLMwHo7SMfb2BMxEj6oKC14Xs7CVdtL7BfyM8D2 lNtxZO//2hBgMjZcEjc1C9sxOZ6BqZDa4MsRebldnZIwpDWGtdgF5ikGopTQ5DYuK93u HXcSk+D1TWuwjlxfRp4/Lw0/p2XKTeigJYpU6TDMdLafrK29xquhwNWl4KiB+dMNByIJ hp9g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@me.com header.s=1a1hai header.b="NbLX2F/c"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=me.com Return-Path: Received: from howler.vger.email (howler.vger.email. [23.128.96.34]) by mx.google.com with ESMTPS id fb4-20020a056a002d8400b006ce64b59391si3124612pfb.110.2023.12.09.05.53.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Dec 2023 05:53:40 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) client-ip=23.128.96.34; Authentication-Results: mx.google.com; dkim=pass header.i=@me.com header.s=1a1hai header.b="NbLX2F/c"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=me.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by howler.vger.email (Postfix) with ESMTP id B932C8054BF0; Sat, 9 Dec 2023 05:53:37 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230268AbjLINxS (ORCPT + 99 others); Sat, 9 Dec 2023 08:53:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230380AbjLINxP (ORCPT ); Sat, 9 Dec 2023 08:53:15 -0500 Received: from pv50p00im-hyfv10021501.me.com (pv50p00im-hyfv10021501.me.com [17.58.6.48]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB6221712 for ; Sat, 9 Dec 2023 05:53:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=me.com; s=1a1hai; t=1702129997; bh=C/CNUr2LNMn6Qo2xusn2tYrx0721oOslxNy000GbTmM=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=NbLX2F/cUDL44mi2SabkraD2VVk0hY3/rQGXB0k0Wvss5Rl3/TzCj3rrYn2EQbwSW FQ7gPhh95AINJgEs4XfJfywasGju3vyAlydBFrDe41RjZvk0ZoahwBhtPuiGNznmHl jhcxu3Nz44xIXu3D0og6FisvlzScDOozYJI0/52yW50wFS8n2lr7+LQSYJrga/uD4Y l6HvHiS5lt0fS+PLUa6tcFt8Tg4GrGsdrmbhDaYXwx2NjPbIvHknXaSNMZ1v2ZCrVr Qo4v7h12JT9DGYqaZLqFGEND+Q9Q+r7gOoRRvIHo0utE6b3NWWlhbltUmoHMgWNLu/ RqlVNJzHrBdYg== Received: from xiongwei.. (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-hyfv10021501.me.com (Postfix) with ESMTPSA id 2C2122C0207; Sat, 9 Dec 2023 13:53:10 +0000 (UTC) From: sxwjean@me.com To: vbabka@suse.cz, 42.hyeyoo@gmail.com, cl@linux.com, linux-mm@kvack.org Cc: penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, roman.gushchin@linux.dev, corbet@lwn.net, keescook@chromium.org, arnd@arndb.de, akpm@linux-foundation.org, gregkh@linuxfoundation.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Xiongwei Song Subject: [PATCH v3 4/4] mm/slub: correct the default value of slub_min_objects in doc Date: Sat, 9 Dec 2023 21:52:03 +0800 Message-Id: <20231209135203.303508-5-sxwjean@me.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231209135203.303508-1-sxwjean@me.com> References: <20231209135203.303508-1-sxwjean@me.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: SFeMuhdIpG0w4U9kk62gVDJSZEQihs1C X-Proofpoint-GUID: SFeMuhdIpG0w4U9kk62gVDJSZEQihs1C X-Proofpoint-Virus-Version: =?UTF-8?Q?vendor=3Dfsecure_engine=3D1.1.170-22c6f66c430a71ce266a39bfe25bc?= =?UTF-8?Q?2903e8d5c8f:6.0.517,18.0.572,17.11.64.514.0000000_definitions?= =?UTF-8?Q?=3D2022-06-21=5F01:2022-06-21=5F01,2020-02-14=5F11,2022-02-23?= =?UTF-8?Q?=5F01_signatures=3D0?= X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 suspectscore=0 clxscore=1015 spamscore=0 malwarescore=0 mlxlogscore=999 mlxscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2312090120 X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on howler.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Sat, 09 Dec 2023 05:53:37 -0800 (PST) From: Xiongwei Song There is no a value assigned to slub_min_objects by default, it always is 0 that is initialized by compiler if no assigned value by command line. min_objects is calculated based on processor numbers in calculate_order(). For more details, see commit 9b2cd506e5f2 ("slub: Calculate min_objects based on number of processors.") Signed-off-by: Xiongwei Song --- Documentation/mm/slub.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/mm/slub.rst b/Documentation/mm/slub.rst index 6579a55b7852..56b27f493ba7 100644 --- a/Documentation/mm/slub.rst +++ b/Documentation/mm/slub.rst @@ -150,7 +150,7 @@ list_lock once in a while to deal with partial slabs. That overhead is governed by the order of the allocation for each slab. The allocations can be influenced by kernel parameters: -.. slab_min_objects=x (default 4) +.. slab_min_objects=x (default 0) .. slab_min_order=x (default 0) .. slab_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER)) -- 2.34.1