Received: by 2002:a5d:9c59:0:0:0:0:0 with SMTP id 25csp2630749iof; Wed, 8 Jun 2022 08:50:17 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxxRxTXRPcZaOjopr/uHq1HhoAoCyd1OH78eMkxMGNBpisvydoESGp90q1NCSTBHW1+OjgU X-Received: by 2002:a17:902:d312:b0:168:9573:8043 with SMTP id b18-20020a170902d31200b0016895738043mr3868063plc.44.1654703416930; Wed, 08 Jun 2022 08:50:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1654703416; cv=none; d=google.com; s=arc-20160816; b=aVTv2lgjQc6GZNE4UaeSOd9VX/F99qUZyU8U4dxl5E0WeJZxs5/doRmeyOLwkDrQ11 j2OLdowsX9CvTd/1n2sdHddMiR3YGBwdsqpv5BmY/rkh6ZHyzqbMIpXfVl54jbWaoJHD wtpa1BNIcX6oM7X4aYcaguQ7jescG/aUFsCnSrgKbeqSqM4weX/EnTgN38H0EQ44wqaa 5YnBTnTqffNqn843vxqM5U1hYs8/bOThie9ofmBAXpImQDqEwrVDrYNsaz0Rfi7mm41o eQVmBD1VumpoVfo6py8KWhffULbuIc3KKMqtObFD9zU9X6b7FVwTFHnbgq+4eQKL8KVS 2JDw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to :organization:from:references:cc:to:content-language:subject :user-agent:mime-version:date:message-id:dkim-signature; bh=y8H9jGB7E9Z50aLgeVMMhOdyAwsTkxFP1izvYrfhgfg=; b=fhr5oyvTPjSW2xfcaVshp8Y5foG2lxyAj9k3Q0ztoO+yLQBEuhM6272L1DjRKCHObE zzDF4TOXq75vlR1KDHG3U8WWIwQdqMDlSKafqHiRycJCY+YTd0LWDs8yKsvl0v0Ml4Es XsEfTET1ACSlh/us/JJgGwYLni/gFT7tK1KlETeLgxeBetU7KBObmUdcm6UY8m8WfxCw K+/+zIQz1ZLHc74k5Z49hO1zX+vKQHAw7JxrQFyJpFhgE5cxiJtMx8d/deGw13N6IwtA KiVzMnuKzwBbTcVYvrTM4xw6c+2YvepcCs5J+qj9GlHlIGHpQiQlx9xGyPZq3QDy810Z VF9Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=RA8oGHf3; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net. [2620:137:e000::1:18]) by mx.google.com with ESMTPS id n8-20020a63f808000000b003f5f0e7a705si2593857pgh.190.2022.06.08.08.50.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Jun 2022 08:50:16 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=RA8oGHf3; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id DC20A10D934; Wed, 8 Jun 2022 08:22:03 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242416AbiFHPVY (ORCPT + 99 others); Wed, 8 Jun 2022 11:21:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47816 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245731AbiFHPUe (ORCPT ); Wed, 8 Jun 2022 11:20:34 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id AC58113903A for ; Wed, 8 Jun 2022 08:18:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1654701423; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=y8H9jGB7E9Z50aLgeVMMhOdyAwsTkxFP1izvYrfhgfg=; b=RA8oGHf3moQi17BWYwf+nWOSbdXxkWLU1z+KxxJKfioDm4TnD31H5yjm4stQ9zzcddQuNY fQf3cX/y1evtP7kCwRDENETKn3gNGtmZfDaEvyvRS1J0Q0JT85VlshEc7OOEX+wNpzvYCY 24nm6TIDSXFAZE5ZE3kGtNhL33G8Kbc= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-144-yZE0pfDoM22pRZoGQAD0hg-1; Wed, 08 Jun 2022 11:17:02 -0400 X-MC-Unique: yZE0pfDoM22pRZoGQAD0hg-1 Received: by mail-wm1-f71.google.com with SMTP id ay1-20020a05600c1e0100b0039c3a3fc6a4so7078502wmb.4 for ; Wed, 08 Jun 2022 08:17:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:organization:in-reply-to :content-transfer-encoding; bh=y8H9jGB7E9Z50aLgeVMMhOdyAwsTkxFP1izvYrfhgfg=; b=Oknl6+roN8fXlfMg2cI2oLj4ntzO5DdNYxDLbtQ5Hdm88C/kARa7r9S1KcJUio4Ni0 mjEzPY9BSrX/UixNCFU3VZYoigAHdFT5bOm107JwI6+zQ59g9cavDf5zPo67IfqCm9Bl FdRXOrFWp+RwxVr01meNeVwIUiyhyLVocK4oKHMMkRGj8Y4uu9UrYW9YJGknJfyk/41T czSXSdiCCwoxgdqnf4BM2YTG1twbCEk9lAKVKwnj9ytn2XsGORftBC75BpcAlYZ4eeZS DYN9llspiF6GedDMgqxnUQgbywUYFYs819DODWNqWZIEGMN54ULQFwOM9HPtsxOZu/LN B7Dg== X-Gm-Message-State: AOAM532QdTqD13phX2/INyeahnllNthyYyQcLT6I5EWwwCSHOCOUwf3S kVXd1Ljsd3OyNlN2/ySKxVYvX0hm6hmLkPz2tPIbQdXfpswcty4DsB8zN1fL/q7V2GT+zsKuPRu B3HE+3NPem5LsVno7YDbivXKy X-Received: by 2002:a05:600c:3ba6:b0:397:5508:652d with SMTP id n38-20020a05600c3ba600b003975508652dmr64645336wms.126.1654701420809; Wed, 08 Jun 2022 08:17:00 -0700 (PDT) X-Received: by 2002:a05:600c:3ba6:b0:397:5508:652d with SMTP id n38-20020a05600c3ba600b003975508652dmr64645310wms.126.1654701420494; Wed, 08 Jun 2022 08:17:00 -0700 (PDT) Received: from ?IPV6:2003:cb:c705:ad00:db2:4c6:8f3a:2ec4? (p200300cbc705ad000db204c68f3a2ec4.dip0.t-ipconnect.de. [2003:cb:c705:ad00:db2:4c6:8f3a:2ec4]) by smtp.gmail.com with ESMTPSA id l13-20020a05600c4f0d00b0039c55bc2c97sm7819484wmq.16.2022.06.08.08.16.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Jun 2022 08:16:58 -0700 (PDT) Message-ID: Date: Wed, 8 Jun 2022 17:16:56 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH v2 3/3] mm/swap: remove swap_cache_info statistics Content-Language: en-US To: Miaohe Lin , akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20220608144031.829-1-linmiaohe@huawei.com> <20220608144031.829-4-linmiaohe@huawei.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20220608144031.829-4-linmiaohe@huawei.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,RDNS_NONE,SPF_HELO_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08.06.22 16:40, Miaohe Lin wrote: > swap_cache_info are not statistics that could be easily used to tune system > performance because they are not easily accessile. Also they can't provide > really useful info when OOM occurs. Remove these statistics can also help > mitigate unneeded global swap_cache_info cacheline contention. > > Suggested-by: David Hildenbrand > Signed-off-by: Miaohe Lin > --- Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb