From patchwork Thu Jul 27 08:04:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13329182 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 lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 01BC9C04E69 for ; Thu, 27 Jul 2023 08:09:50 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1qOw4D-0006vs-Sx; Thu, 27 Jul 2023 08:09:50 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1qOw4C-0006vh-1s for linux-f2fs-devel@lists.sourceforge.net; Thu, 27 Jul 2023 08:09:48 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=GSWsN00ewH1CUxuL2on0amogNZtYjpfZMPk3tXk1MLc=; b=de6tv+1JmAg8whJWrRp4hmq20V dnk/YFIgW5Pw8EpGBOZrT2cyf3ipQh+rj5/Bm4AEzmKB0FlGsHzFNy0A0G9r6uOmFMIEUyYqlIBXD uX5Qu98BWim4xnL3DVzBHjIwU6e+GXL5uonQ2STsFVisQNhAiQcf3MTg4Brlg/I/eP3o=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=GSWsN00ewH1CUxuL2on0amogNZtYjpfZMPk3tXk1MLc=; b=m43DN4qN02GC3qIRziS43Yu2P7 YUe7kNe9qQ6GVsThimFtzv1z0qtGz49eQVbVrIfL0U2MPW/6cIiTDQEW+SHazXzM9z/rh0uAvHoF8 nwt9nOlbAS77N9SIyKF+l8A/6oKea2rkZU/Hfi2W9NMFrjv565l1won1tBGQqiAYN3tU=; Received: from mail-pf1-f174.google.com ([209.85.210.174]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.95) id 1qOw4B-004LXW-86 for linux-f2fs-devel@lists.sourceforge.net; Thu, 27 Jul 2023 08:09:48 +0000 Received: by mail-pf1-f174.google.com with SMTP id d2e1a72fcca58-66d6a9851f3so167947b3a.0 for ; Thu, 27 Jul 2023 01:09:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690445381; x=1691050181; 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=GSWsN00ewH1CUxuL2on0amogNZtYjpfZMPk3tXk1MLc=; b=Uigp99md2Rr3CXBoApAa/OORnqo8B1J7RivQ80kk84PuD/8/0U/wiHIiPqvPSjzBq+ 4mgkiCdsVsAk9/e2muldWgdoE75BspngFHkVey9mAlq6MnrgeN5Z2UVnZxuIj86jdS6R rAWjfbsFjXDEfm8YOidjdqca7DNptBkelH0HrT7nXcdFtSlvKmDtxqUQOqWjbYzyZulg AN7Mzxd848XhJE6ClueXrvuJZWX5X85+XT80LyTl5276AdX2DnTvKQaDsxfVQAKr1XxX WaB1fRqts+Skr4BpFNBdK0X00kCFzaVEUe4nziyxeBmy6RtpnTKoOQLFGVCxxQosoZyC 4x+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690445381; x=1691050181; 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=GSWsN00ewH1CUxuL2on0amogNZtYjpfZMPk3tXk1MLc=; b=TGiLduJFdJQZKbcSjmWLbA0/JaiIvqWMoFDEOHsB7Xxf4N60nylKJ+8vNyJ+exY79C vFU8T/JKdiR4B/8+4agaV6flB3baylAf+PaQEHiR0Hfuv70x8AAeOWnjRd3Q2bkaWP4Y mQVnONKyJYrPUNQantJ60SuhiImuEmNomzUlUdMQHOBssexiM1yvlzxII/SVOExw/4B9 FoJc7RvNU88k0D+xKDHkGMN5sI5QxJGrNKCmOOMaKs4fHhL/wFl12gu1yPpwAFejCdg6 XMgWWgeFt9NyHGx2Wdajpa3bEzjZ4BP1hxt9GkIo+lAR9jbUnYLU0oBf5LmYCAkVeOHe JHPg== X-Gm-Message-State: ABy/qLZkElC6vnqttLiESplqnNGBnOW22wf3qsVELcRBPrrnjqQ6dswc FFjvqrcilS/2FeRhvHXjpRvEIw== X-Google-Smtp-Source: APBJJlHVjyqYSo1ak3Z7chV1yhtxMPzG2+b/e8BLYdWQhXdIbtZlkhi04HlfYJAG9z5TWY/X++2RBQ== X-Received: by 2002:a05:6a20:729a:b0:100:b92b:e8be with SMTP id o26-20020a056a20729a00b00100b92be8bemr5576237pzk.2.1690445381598; Thu, 27 Jul 2023 01:09:41 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id j8-20020aa78d08000000b006828e49c04csm885872pfe.75.2023.07.27.01.09.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 01:09:41 -0700 (PDT) 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 Date: Thu, 27 Jul 2023 16:04:32 +0800 Message-Id: <20230727080502.77895-20-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230727080502.77895-1-zhengqi.arch@bytedance.com> References: <20230727080502.77895-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 X-Headers-End: 1qOw4B-004LXW-86 Subject: [f2fs-dev] [PATCH v3 19/49] rcu: dynamically allocate the rcu-lazy shrinker X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Qi Zheng via Linux-f2fs-devel From: Qi Zheng Reply-To: Qi Zheng Cc: kvm@vger.kernel.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org, dm-devel@redhat.com, linux-mtd@lists.infradead.org, x86@kernel.org, cluster-devel@redhat.com, xen-devel@lists.xenproject.org, linux-ext4@vger.kernel.org, linux-arm-msm@vger.kernel.org, rcu@vger.kernel.org, linux-bcache@vger.kernel.org, Qi Zheng , linux-raid@vger.kernel.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-btrfs@vger.kernel.org Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Use new APIs to dynamically allocate the rcu-lazy shrinker. Signed-off-by: Qi Zheng --- kernel/rcu/tree_nocb.h | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h index 5598212d1f27..e1c59c33738a 100644 --- a/kernel/rcu/tree_nocb.h +++ b/kernel/rcu/tree_nocb.h @@ -1396,13 +1396,6 @@ lazy_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc) return count ? count : SHRINK_STOP; } - -static struct shrinker lazy_rcu_shrinker = { - .count_objects = lazy_rcu_shrink_count, - .scan_objects = lazy_rcu_shrink_scan, - .batch = 0, - .seeks = DEFAULT_SEEKS, -}; #endif // #ifdef CONFIG_RCU_LAZY void __init rcu_init_nohz(void) @@ -1410,6 +1403,7 @@ void __init rcu_init_nohz(void) int cpu; struct rcu_data *rdp; const struct cpumask *cpumask = NULL; + struct shrinker * __maybe_unused lazy_rcu_shrinker; #if defined(CONFIG_NO_HZ_FULL) if (tick_nohz_full_running && !cpumask_empty(tick_nohz_full_mask)) @@ -1436,8 +1430,16 @@ void __init rcu_init_nohz(void) return; #ifdef CONFIG_RCU_LAZY - if (register_shrinker(&lazy_rcu_shrinker, "rcu-lazy")) - pr_err("Failed to register lazy_rcu shrinker!\n"); + lazy_rcu_shrinker = shrinker_alloc(0, "rcu-lazy"); + if (!lazy_rcu_shrinker) { + pr_err("Failed to allocate lazy_rcu shrinker!\n"); + } else { + lazy_rcu_shrinker->count_objects = lazy_rcu_shrink_count; + lazy_rcu_shrinker->scan_objects = lazy_rcu_shrink_scan; + lazy_rcu_shrinker->seeks = DEFAULT_SEEKS; + + shrinker_register(lazy_rcu_shrinker); + } #endif // #ifdef CONFIG_RCU_LAZY if (!cpumask_subset(rcu_nocb_mask, cpu_possible_mask)) {