From nobody Tue Dec 16 21:49:23 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 07798EE49A0 for ; Thu, 24 Aug 2023 03:48:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239830AbjHXDrz (ORCPT ); Wed, 23 Aug 2023 23:47:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239848AbjHXDr3 (ORCPT ); Wed, 23 Aug 2023 23:47:29 -0400 Received: from mail-il1-x12b.google.com (mail-il1-x12b.google.com [IPv6:2607:f8b0:4864:20::12b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 139571728 for ; Wed, 23 Aug 2023 20:46:38 -0700 (PDT) Received: by mail-il1-x12b.google.com with SMTP id e9e14a558f8ab-34bae11c5a6so6419585ab.0 for ; Wed, 23 Aug 2023 20:46:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1692848794; x=1693453594; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=uDu/4z0sff3MNLq2Hem41DvJLtW9HR7Ht2OY0+o3IBw=; b=NcBMtAaaLE0r3U9cq1G5ArkW7KseQfBeg2oIVpo0zwEHj2pxIXv396lmpHWvqNY6WL JjyXJcQ+71rZjpvUyUbfQ8TBZw5eC/hpC4SZQrI5yyx8ZDcSfC61r6xS0cAm/1P5jMWZ mkFz/DOMsozI6+D11/YuxeVQCAHIevBxkzEmHriraQYG91HLeEL/u8PL5wK3f8VZRjuT cz8d/r+S9nMPLi5iQaiL+tTIS8oLRmffsx3mniOICQT+h1azffq4WqSFD7IduUw5wFnG KASaAakXH9kG67rUD+T3XOhVhqWNxRqdqrYEnF7FkbsAyj3LDEWSCHCaKrbISFen/hwS Jp2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692848794; x=1693453594; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=uDu/4z0sff3MNLq2Hem41DvJLtW9HR7Ht2OY0+o3IBw=; b=IyGkX77rzZqkZz2DpOnh0OcnmDJZE8POEJXKE0+XYOnPEm7WaFf0gSxXeMpdTFDJMI C7GkgElm/g0u2KgJic1mnqCa8082tftoAWCcBGhreUHNHmrm0f7jdU+b/UW0roUy1nD9 5TgCKg8RVeGG6i1//UpJ8xAVArfEtENhJSeXMGSkyE2yeNxXGY35XQ40wCkOm8NKsna/ VGh/zu1t3HJu00HC9KQRxc95oO/8cqZ7kJZxUSaC58qZKhcFGebCf94uYes7MHW1hNaL g2WwEsaGLS/vruLx3SJjGvxlSPw1EPZGRXdUR7XZi7gnhr/oAVFMz5+LWjftH6JZjyou r73Q== X-Gm-Message-State: AOJu0YwJpajlYUfzye634ZXxY9DgAkaS/q1KZOh9lTYcvcX+6arILhcX 0xWJmeD4iHORZoJQk8Mm9X6Clw== X-Google-Smtp-Source: AGHT+IF6gasrupmNMEd6iGY3g7E0ID/cc6G3nenUlRac5+F8aF1f3dod8FyRICkvmINEgAPLaLvdgQ== X-Received: by 2002:a92:c90c:0:b0:345:a3d0:f0d4 with SMTP id t12-20020a92c90c000000b00345a3d0f0d4mr15091049ilp.3.1692848794044; Wed, 23 Aug 2023 20:46:34 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id t6-20020a63b246000000b005579f12a238sm10533157pgo.86.2023.08.23.20.46.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Aug 2023 20:46:33 -0700 (PDT) From: Qi Zheng To: akpm@linux-foundation.org, david@fromorbit.com, tkhai@ya.ru, vbabka@suse.cz, roman.gushchin@linux.dev, djwong@kernel.org, brauner@kernel.org, paulmck@kernel.org, tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, muchun.song@linux.dev Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Qi Zheng Subject: [PATCH v5 19/45] mm: workingset: dynamically allocate the mm-shadow shrinker Date: Thu, 24 Aug 2023 11:42:38 +0800 Message-Id: <20230824034304.37411-20-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230824034304.37411-1-zhengqi.arch@bytedance.com> References: <20230824034304.37411-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Use new APIs to dynamically allocate the mm-shadow shrinker. Signed-off-by: Qi Zheng --- mm/workingset.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/mm/workingset.c b/mm/workingset.c index da58a26d0d4d..3c53138903a7 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -763,13 +763,6 @@ static unsigned long scan_shadow_nodes(struct shrinker= *shrinker, NULL); } =20 -static struct shrinker workingset_shadow_shrinker =3D { - .count_objects =3D count_shadow_nodes, - .scan_objects =3D scan_shadow_nodes, - .seeks =3D 0, /* ->count reports only fully expendable nodes */ - .flags =3D SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE, -}; - /* * Our list_lru->lock is IRQ-safe as it nests inside the IRQ-safe * i_pages lock. @@ -778,9 +771,10 @@ static struct lock_class_key shadow_nodes_key; =20 static int __init workingset_init(void) { + struct shrinker *workingset_shadow_shrinker; unsigned int timestamp_bits; unsigned int max_order; - int ret; + int ret =3D -ENOMEM; =20 BUILD_BUG_ON(BITS_PER_LONG < EVICTION_SHIFT); /* @@ -797,17 +791,24 @@ static int __init workingset_init(void) pr_info("workingset: timestamp_bits=3D%d max_order=3D%d bucket_order=3D%u= \n", timestamp_bits, max_order, bucket_order); =20 - ret =3D prealloc_shrinker(&workingset_shadow_shrinker, "mm-shadow"); - if (ret) + workingset_shadow_shrinker =3D shrinker_alloc(SHRINKER_NUMA_AWARE | + SHRINKER_MEMCG_AWARE, + "mm-shadow"); + if (!workingset_shadow_shrinker) goto err; + ret =3D __list_lru_init(&shadow_nodes, true, &shadow_nodes_key, - &workingset_shadow_shrinker); + workingset_shadow_shrinker); if (ret) goto err_list_lru; - register_shrinker_prepared(&workingset_shadow_shrinker); + + workingset_shadow_shrinker->count_objects =3D count_shadow_nodes; + workingset_shadow_shrinker->scan_objects =3D scan_shadow_nodes; + + shrinker_register(workingset_shadow_shrinker); return 0; err_list_lru: - free_prealloced_shrinker(&workingset_shadow_shrinker); + shrinker_free(workingset_shadow_shrinker); err: return ret; } --=20 2.30.2