From patchwork Mon Aug 7 11:08:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13343420 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 97FB9C001DB for ; Mon, 7 Aug 2023 11:12:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231962AbjHGLMa (ORCPT ); Mon, 7 Aug 2023 07:12:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232012AbjHGLMH (ORCPT ); Mon, 7 Aug 2023 07:12:07 -0400 Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83C8D1990 for ; Mon, 7 Aug 2023 04:11:13 -0700 (PDT) Received: by mail-pg1-x535.google.com with SMTP id 41be03b00d2f7-55badd6d6feso571219a12.1 for ; Mon, 07 Aug 2023 04:11:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1691406660; x=1692011460; 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=gw0136sZs5r00/aJ54ocs9PBikYP7lRbXpwQPAfPTOc=; b=Gyvrq2nfyAR2gtiKV5zvL8Xhj+SCDDvYcDtn1XMvCOK2WxV+VSYbUnzAoQjYyvGt5+ PHTlpGahxelrDvlDYfQpwR6LaV4hFOqIXHRHdsrciNy+7qVINos9dShQ72ovzklZpuaN tBKHGkUe3hFlhdPUgFyU1ktgofOKrrDExvQw3WHpY26rCW0nNqj3a0s5WCQXQ9Bd9I93 TEwgyMogZ1mPzKBfTbunK1McubgsswcAT76vheTTNvE/WuA1UFNnV1+1CWE/ou902ykn 9hSF0PrzcrYBFpqGd0qLFTJvVM4g/FWHVeqzvA2yGx34iIfgBZSGKt0JN+J335S8BL/2 72/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691406660; x=1692011460; 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=gw0136sZs5r00/aJ54ocs9PBikYP7lRbXpwQPAfPTOc=; b=lRUrq7Oo9tDjMWC4iWl3qsMeB81X8zf9xOpCWDdBZ7OdfvXAALlabadBjc+ighBNN+ ID/7esSp+UBiCR4iZAIHtTmZLR7Oo3pqcPSw82q4iJQykFa/2OYC1uzS1m9glsOqu0eL +WWgm8GOZReFxP3RcNhUpG0LB/Mkt9amTY7lC7vjKVXDeUeIMeCSm/DqrZJfffoC2zEV jG0UDz8GAmBkdZ1nueWwe9RGPETMMshbpACJr6KD3eGMD+CDKDkmZJVg2hAPjB05lUea 93nAUV/L8z33y4oI71NqearMZy0f6O/vwgCMF5RjEJoTVxqoa+PKsCrfHus/tmBA58DU 8iFA== X-Gm-Message-State: ABy/qLatT5l9k5y8+D0c0XAFuk+s332pRyZ+vgQAHuANSg8kWooU9KHC eqRqh+rZkV7wzOpFFb74ouZrPw== X-Google-Smtp-Source: APBJJlEPLwCkyM2NxjgH9xwMvzhNNiNlagu6lRBAbkDAEcDSA5oH2sSREkdo5fvCbnVAS1DDWMCKvg== X-Received: by 2002:a17:90a:4104:b0:25c:1ad3:a4a1 with SMTP id u4-20020a17090a410400b0025c1ad3a4a1mr24588690pjf.1.1691406660379; Mon, 07 Aug 2023 04:11:00 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id y13-20020a17090aca8d00b0025be7b69d73sm5861191pjt.12.2023.08.07.04.10.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 04:10:59 -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, simon.horman@corigine.com, dlemoal@kernel.org 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 , Muchun Song Subject: [PATCH v4 05/48] kvm: mmu: dynamically allocate the x86-mmu shrinker Date: Mon, 7 Aug 2023 19:08:53 +0800 Message-Id: <20230807110936.21819-6-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230807110936.21819-1-zhengqi.arch@bytedance.com> References: <20230807110936.21819-1-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 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 9e4cd8b4a202..0386d5ec97b0 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -6804,11 +6804,7 @@ 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) { @@ -6941,10 +6937,16 @@ 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: @@ -6966,7 +6968,7 @@ void kvm_mmu_vendor_module_exit(void) { mmu_destroy_caches(); percpu_counter_destroy(&kvm_total_used_mmu_pages); - unregister_shrinker(&mmu_shrinker); + shrinker_free(mmu_shrinker); } /*