From nobody Mon Dec 29 04:48:40 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 3EC40C4167B for ; Fri, 1 Dec 2023 03:16:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377134AbjLADQI (ORCPT ); Thu, 30 Nov 2023 22:16:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232273AbjLADQG (ORCPT ); Thu, 30 Nov 2023 22:16:06 -0500 Received: from pv50p00im-ztdg10012101.me.com (pv50p00im-ztdg10012101.me.com [17.58.6.49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46B97171C for ; Thu, 30 Nov 2023 19:16:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=me.com; s=1a1hai; t=1701400570; bh=Wr7fTnBxq0bcCyx9Wl9rcGbwRfY61PyyH9mYKGo5gHg=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=jPdTAIlk/hbCeN3L/U9GeOvlEffSGnFsu3I2sAzuU+yLlPiyapfN6ISjPD1Hl5Wem iNkXwxu7HRVXahSaYSdn59UMOTp0tMf9YYmdOnUCqfPHyHdvYy6Y7gUfmli4Qh8JZt TfAUfp7PGrzoprA1FGRZ7Nk1thU+8EwNVfeh9NZdN4lPJGW4b0NGXJfuFlQIv+agt2 z8bPfiFW/DaksShnj/Cen4TzFkf0J+KH81ZSK5y814TUEOLUnDZVkkMQE/jAR8jGFm m/8Ug+JGAnQ6yrf8RemN2IDXh3RaoQ0Eeo++KfCM2HKNfKpoiqjfehh4FB8odPZRJS 2tt6Q05r+aDHg== Received: from xiongwei.. (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-ztdg10012101.me.com (Postfix) with ESMTPSA id 62B93740162; Fri, 1 Dec 2023 03:16:05 +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 3/3] mm/slub: correct the default value of slub_min_objects in doc Date: Fri, 1 Dec 2023 11:15:05 +0800 Message-Id: <20231201031505.286117-4-sxwjean@me.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231201031505.286117-1-sxwjean@me.com> References: <20231201031505.286117-1-sxwjean@me.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: e__2VqUVQIrewVBKSdjrs2qmxpsFAx4p X-Proofpoint-GUID: e__2VqUVQIrewVBKSdjrs2qmxpsFAx4p 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 mlxlogscore=999 bulkscore=0 clxscore=1015 mlxscore=0 phishscore=0 suspectscore=0 malwarescore=0 adultscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2312010018 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 awlays is 0 that is intailized by compiler if no assigned value by command line. min_objects is calculated based on proccessor 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 be75971532f5..1f4399581449 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 -.. slub_min_objects=3Dx (default 4) +.. slub_min_objects=3Dx (default 0) .. slub_min_order=3Dx (default 0) .. slub_max_order=3Dx (default 3 (PAGE_ALLOC_COSTLY_ORDER)) =20 --=20 2.34.1