From nobody Wed Dec 17 00:46:43 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC89AC4167B for ; Sat, 9 Dec 2023 13:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230269AbjLINxT (ORCPT ); Sat, 9 Dec 2023 08:53:19 -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: quoted-printable 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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. T= hat overhead is governed by the order of the allocation for each slab. The allocations can be influenced by kernel parameters: =20 -.. slab_min_objects=3Dx (default 4) +.. slab_min_objects=3Dx (default 0) .. slab_min_order=3Dx (default 0) .. slab_max_order=3Dx (default 3 (PAGE_ALLOC_COSTLY_ORDER)) =20 --=20 2.34.1