From patchwork Mon Jul 24 09:43:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13323926 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 62574C10F00 for ; Mon, 24 Jul 2023 09:54:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232658AbjGXJyS (ORCPT ); Mon, 24 Jul 2023 05:54:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233013AbjGXJxk (ORCPT ); Mon, 24 Jul 2023 05:53:40 -0400 Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B06754C2C for ; Mon, 24 Jul 2023 02:50:07 -0700 (PDT) Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-1b7dfb95761so5878555ad.1 for ; Mon, 24 Jul 2023 02:50:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690192158; x=1690796958; 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=AVIFplaZ76DyAQXZ2ZJxr5973JfmLiF6XogxT7JwM8U=; b=g/oklpIKNGh+0wS+n9EMTX7klc8jS620o9fzwPGIqpCBu8mbiUf3GVaJFWI9cq4kyt IcHzy4DXpXrqHW9rKUwTo/qnz3ci8+g869gbq1SHjojy2v6sITGFJ6jCBwntHLmpVCFL BxlLRGgDhGT5pteYElzIqAQYNjUlDrhrzHvMMVeuk6mD5iB/3/39xp+zm1XNO6yWMu+0 nnfy+u33I9S+Zpuf8vfrp2IBvebCHcozlkxEMdcu6inA/NJIaH4grbbwn36wCiHGJxl9 XjhaC2ZZMe6xC4wfMSYebjh3I/a6dIvPCN3tI9BZtHhq23lIbjcutVI19WQEcGj42Ona 01KQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690192158; x=1690796958; 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=AVIFplaZ76DyAQXZ2ZJxr5973JfmLiF6XogxT7JwM8U=; b=Vrnph1zB3OTdpQjV9wW0T2sYcS/DqLy/tWFbrvvnaXRJ9Hz+hokE+bY3VpDO5S+F/7 ynL/xtyehPS9XK9JoUAXQrvZG+GW8ykm3W25lRSitnDjVJ7WayYoLaAhCu2pMEYzdK8m 80Y+gieAgwo29lTf8Wz4sgsG7/+GVnWuOuYSj6GdcVjEOCi2zcTzyeQZYNNFqzKPd69a x7zE0NOsRaVLHNSBTIO4xuMWizzuUjly2ZpQFivP136wFm6Y8aj9SKBPXZmJVDWpgU0c 4nvULthXHYPRxv8zz1PVmh3A5YCrn23B0kMtF6ZPnM2YkuDEeFu/EJborvGOjeI8JNvs xrOg== X-Gm-Message-State: ABy/qLYfmnFjcdu+WOEc0qSdMTX9srf4a+Y1g8osrWezMRRfLZuPgktE Rze1e54VId5KqiiJYlWuxw7+PQ== X-Google-Smtp-Source: APBJJlFR9Ju5Vfb3AHUJ7jWuLYrfbcu6xuKCy8KktQCx0EpABVN8oHS8r350MQ/TdmOpiBIOkTrovA== X-Received: by 2002:a17:902:d484:b0:1b8:a27d:f591 with SMTP id c4-20020a170902d48400b001b8a27df591mr12261184plg.5.1690192158548; Mon, 24 Jul 2023 02:49:18 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id d5-20020a170902c18500b001bb20380bf2sm8467233pld.13.2023.07.24.02.49.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 02:49:18 -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, x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org, rcu@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, Qi Zheng Subject: [PATCH v2 21/47] mm: workingset: dynamically allocate the mm-shadow shrinker Date: Mon, 24 Jul 2023 17:43:28 +0800 Message-Id: <20230724094354.90817-22-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230724094354.90817-1-zhengqi.arch@bytedance.com> References: <20230724094354.90817-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Use new APIs to dynamically allocate the mm-shadow shrinker. Signed-off-by: Qi Zheng --- mm/workingset.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/mm/workingset.c b/mm/workingset.c index 4686ae363000..4bc85f739b13 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -762,12 +762,7 @@ static unsigned long scan_shadow_nodes(struct shrinker *shrinker, NULL); } -static struct shrinker workingset_shadow_shrinker = { - .count_objects = count_shadow_nodes, - .scan_objects = scan_shadow_nodes, - .seeks = 0, /* ->count reports only fully expendable nodes */ - .flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE, -}; +static struct shrinker *workingset_shadow_shrinker; /* * Our list_lru->lock is IRQ-safe as it nests inside the IRQ-safe @@ -779,7 +774,7 @@ static int __init workingset_init(void) { unsigned int timestamp_bits; unsigned int max_order; - int ret; + int ret = -ENOMEM; BUILD_BUG_ON(BITS_PER_LONG < EVICTION_SHIFT); /* @@ -796,17 +791,24 @@ static int __init workingset_init(void) pr_info("workingset: timestamp_bits=%d max_order=%d bucket_order=%u\n", timestamp_bits, max_order, bucket_order); - ret = prealloc_shrinker(&workingset_shadow_shrinker, "mm-shadow"); - if (ret) + workingset_shadow_shrinker = shrinker_alloc(SHRINKER_NUMA_AWARE | + SHRINKER_MEMCG_AWARE, + "mm-shadow"); + if (!workingset_shadow_shrinker) goto err; + ret = __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 = count_shadow_nodes; + workingset_shadow_shrinker->scan_objects = scan_shadow_nodes; + + shrinker_register(workingset_shadow_shrinker); return 0; err_list_lru: - free_prealloced_shrinker(&workingset_shadow_shrinker); + shrinker_free_non_registered(workingset_shadow_shrinker); err: return ret; }