From patchwork Mon Jul 24 09:43:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13323727 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 69492C0015E for ; Mon, 24 Jul 2023 09:47:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231465AbjGXJq6 (ORCPT ); Mon, 24 Jul 2023 05:46:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231849AbjGXJqd (ORCPT ); Mon, 24 Jul 2023 05:46:33 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0301519A1 for ; Mon, 24 Jul 2023 02:45:55 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id d9443c01a7336-1b867f9198dso8893445ad.0 for ; Mon, 24 Jul 2023 02:45:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690191955; x=1690796755; 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=jmPwAlPL0TnDBmalzCzATtOPmfxfqu3Q+7XaFZclAtg=; b=IZCH5tV1VdvhB0RXcuG+SL+gg1mEbPZMQJz8qUY1fWCpYBfjAR72/AnWbcPpstjQLI aFpv+l8Q67Kc3iJwSzziW/zZbsYehvkdZbQbXx8X8jR6oJCUrIFV8Qzo50G/FYmT9t2/ w6ZN7N+ZviCRVJxyy+bucuBxrS6SRhon2EIiX0i15H4OrDXIvK+dChrAy0pj6MjsuwdC 6yiqEWuw0/0mdj0SNL2xTjIsK+WXPpE1gw9KgQ4WCUpGSoFe6rXH0GXBficEqbQlrShV wc7SdQklmSH69kiwU3dxFC6F0qOnJE6NuoEe6VBjJkE5shAIs2KVw9Ha+vCxjUcFWX2y lSHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690191955; x=1690796755; 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=jmPwAlPL0TnDBmalzCzATtOPmfxfqu3Q+7XaFZclAtg=; b=M0/9ak1ND4KC+f25NwUYXz746Eyah985CqE35swZyJy70Ga3WzdA4O0r4/NdEM/81I ciRMQP1D25vEqHrr8Bp3TSIuB83PW/ys4C9TDpxmYQHBqHUWEcZj3QqUCNLCrd2K+6mu j5wBQClVHrPVaLHkud1MSwVNi06qWGuEvs+94/SQMSpS98Oh9ZRS2c7JBjiBS4rFR/7x Ek9QMhhxFJ9cN3TmuLTyuoN4IK7g72yAX939sjHFZXx+qgoKI4xLhU3qmBgyyVWbDnqh A1WyDOE9C2Q4DNknmLML3fRkdz9xX80n0Y5HDXrfHORqfOSfCEdGYIG87G5m+Vzfc7qP cKBQ== X-Gm-Message-State: ABy/qLa2zhnFNYa1lIQrPEqVLTIJR9GPdrMxOlBJL3YzpWhBb0dfU91E HZt6AB7Vsp2V7g3gkI4pL8yK7Q== X-Google-Smtp-Source: APBJJlHDY1qhgSa+H4mr70oj6h44PLP3QUTUzXb3MsGg4I77oDNLLFWrtOaIhBAmIAnOXFQDdEVBFw== X-Received: by 2002:a17:902:d4cb:b0:1b1:9272:55e2 with SMTP id o11-20020a170902d4cb00b001b1927255e2mr12365119plg.3.1690191954835; Mon, 24 Jul 2023 02:45:54 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id d5-20020a170902c18500b001bb20380bf2sm8467233pld.13.2023.07.24.02.45.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 02:45:54 -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 04/47] kvm: mmu: dynamically allocate the x86-mmu shrinker Date: Mon, 24 Jul 2023 17:43:11 +0800 Message-Id: <20230724094354.90817-5-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: linux-btrfs@vger.kernel.org Use new APIs to dynamically allocate the x86-mmu shrinker. Signed-off-by: Qi Zheng Reviewed-by: Muchun Song --- arch/x86/kvm/mmu/mmu.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index ec169f5c7dce..ab405e0a8954 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -6847,11 +6847,7 @@ static unsigned long mmu_shrink_count(struct shrinker *shrink, return percpu_counter_read_positive(&kvm_total_used_mmu_pages); } -static struct shrinker mmu_shrinker = { - .count_objects = mmu_shrink_count, - .scan_objects = mmu_shrink_scan, - .seeks = DEFAULT_SEEKS * 10, -}; +static struct shrinker *mmu_shrinker; static void mmu_destroy_caches(void) { @@ -6984,10 +6980,16 @@ int kvm_mmu_vendor_module_init(void) if (percpu_counter_init(&kvm_total_used_mmu_pages, 0, GFP_KERNEL)) goto out; - ret = register_shrinker(&mmu_shrinker, "x86-mmu"); - if (ret) + mmu_shrinker = shrinker_alloc(0, "x86-mmu"); + if (!mmu_shrinker) goto out_shrinker; + mmu_shrinker->count_objects = mmu_shrink_count; + mmu_shrinker->scan_objects = mmu_shrink_scan; + mmu_shrinker->seeks = DEFAULT_SEEKS * 10; + + shrinker_register(mmu_shrinker); + return 0; out_shrinker: @@ -7009,7 +7011,7 @@ void kvm_mmu_vendor_module_exit(void) { mmu_destroy_caches(); percpu_counter_destroy(&kvm_total_used_mmu_pages); - unregister_shrinker(&mmu_shrinker); + shrinker_unregister(mmu_shrinker); } /*