From mboxrd@z Thu Jan 1 00:00:00 1970 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 7D3ABC0502A for ; Tue, 30 Aug 2022 06:00:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229949AbiH3GAJ (ORCPT ); Tue, 30 Aug 2022 02:00:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229738AbiH3GAH (ORCPT ); Tue, 30 Aug 2022 02:00:07 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ACE4312D15; Mon, 29 Aug 2022 23:00:06 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id v5so3891834plo.9; Mon, 29 Aug 2022 23:00:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:reply-to:message-id:date :subject:cc:to:from:from:to:cc; bh=qUSrr+Dj5JEyxXLU0zu9XCionGxLBWlgtmoR99MFjhQ=; b=FjZ0kPOazz55wM/uQwXnHAUHofevmUyS/fY5Hz9pws04EQKglg986u+lddR1MBRc9G JhOVc1ONM6hZeGw2sGMV8DtQCGEPaPSGYJlAE3j2M9fRp2J3R53+q3V4/ZLUfQk904XT 0BA1sw4kr4vqPw4k02HrQD6uldwsF7nVrYd7e9NMkOr/e3zEC67KEAKtT44+xc9mUIxc glCfCRac7UFvijpundB+UUlCZwIAuNLfu+MRin/B7JuwhHAhnEu/5Wptuq9lmQfCdfH6 nEv5wN1UV6Opd14YB/YIvNr9vvUZobL0C6Ozo8qY6k0eQ/7g/2n7LwYub6AXvivgh11d BiYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:reply-to:message-id:date :subject:cc:to:from:x-gm-message-state:from:to:cc; bh=qUSrr+Dj5JEyxXLU0zu9XCionGxLBWlgtmoR99MFjhQ=; b=FtKh+XgdM+fXLunjgGvilnUcUkjvG5utlUZ7l/SJcSqorXvKuve9dCxgCyJofG72mW ze2iI3z/n14ut9mpkIsE9km5nH5vp9a/PBwPCmFVSMEGW0KaWbczzya7pgz6jFv0NodU 0artty4eWR2ofuFz36wN19gOfWAjLGfSBxgdLxJ/Ag6xgWkoyw50sAZS4u60tPB6E/6q 98JzJQkApOj5rNOmKFrRzxdB74ZixE5QlgcPueqYKzRTqqZMSO4ZcuO2Ju74rpPMX+so 1A0mofxio6UsDUEie+6MvlqNE1dIGlA+ifL5ftm3nvyd908+U5LI/0K1LeZBrMNzT3m2 VD3w== X-Gm-Message-State: ACgBeo3uWdg5lj6vfUcLNanUlkQZUUFBRjwqXlDkT7ME5/zCB1avga7d YYYWI/wTLzrDpVHeXs/3co/ot3Gn0eyJkeGb X-Google-Smtp-Source: AA6agR7u8R5s81ZyEwFILcQ8nuubO4ELAAl2cmAH/jIWx5Fgy9PdSMUWnnBoi4vl8ZQNbastjgKbZA== X-Received: by 2002:a17:90a:d149:b0:1fb:6dfb:1fb8 with SMTP id t9-20020a17090ad14900b001fb6dfb1fb8mr21573583pjw.25.1661839205472; Mon, 29 Aug 2022 23:00:05 -0700 (PDT) Received: from KASONG-MB0.tencent.com ([103.7.29.31]) by smtp.gmail.com with ESMTPSA id m24-20020a17090b069800b001fd962747d4sm5311546pjz.30.2022.08.29.23.00.02 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 29 Aug 2022 23:00:04 -0700 (PDT) From: Kairui Song To: cgroups@vger.kernel.org, linux-mm@kvack.org Cc: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , linux-kernel@vger.kernel.org, Kairui Song Subject: [PATCH 0/2] mm: memcontrol: cleanup and optimize for accounting params Date: Tue, 30 Aug 2022 13:59:47 +0800 Message-Id: <20220830055949.12640-1-ryncsn@gmail.com> X-Mailer: git-send-email 2.35.2 Reply-To: Kairui Song MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kairui Song Patch 1/2 changes the behavior of kmem accounting a bit, making it either globally enabled or globally disabled by boot params and no longer affected by the creation of the first non-root cgroup. This might be a bit arguable though. Patch 2/2 optimizes some hot paths by making cgroup_memory_noswap a static key, benchmark shows swap paths now have a ~4% lower overhead. Kairui Song (2): mm: memcontrol: remove mem_cgroup_kmem_disabled mm: memcontrol: make cgroup_memory_noswap a static key include/linux/memcontrol.h | 8 +------ mm/memcontrol.c | 45 +++++++++++++++++++++++--------------- mm/percpu.c | 2 +- mm/slab_common.c | 2 +- 4 files changed, 30 insertions(+), 27 deletions(-) -- 2.35.2