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 X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 013BFC433F5 for ; Tue, 28 Aug 2018 11:20:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD0252087C for ; Tue, 28 Aug 2018 11:20:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="rCOeJmPh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AD0252087C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728036AbeH1PL4 (ORCPT ); Tue, 28 Aug 2018 11:11:56 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:44839 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727579AbeH1PLz (ORCPT ); Tue, 28 Aug 2018 11:11:55 -0400 Received: by mail-pg1-f195.google.com with SMTP id r1-v6so592196pgp.11; Tue, 28 Aug 2018 04:20:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=HpceU0oLMX/N4fM279jk3FPRdI+msJs42Hh+cmRV4BI=; b=rCOeJmPhCHPAqW8RAmKC/BV6//lBIoYLvdwo8Y1ZWDr3nN76/Joq6VYhBDsADg/Mpt db3WuQC8GgM+PH0qZNVzerVwAN2jPSNeaQ7uVkhz4ecZsVmioaihbG+bWWgeKemqxeBW otm0bCjbzFWQQeZ3UVcL7N2i4jJSbm6MIvABQ8mTumDGS5B0Hey3BrFDnbydAujpgtHW NSCwqSI/C1hQ7i/v6cCbizecOJk3ugzTyRlEIKLdrw1gD1Acrl4WAc6IGn6z1hcm/kY3 ISaczXQDzH2bJkWy41h3hjtidGRrssowW7e7L7ixtm2yu8RORhxgNUqjM3BMkoAEKU8B ix6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=HpceU0oLMX/N4fM279jk3FPRdI+msJs42Hh+cmRV4BI=; b=Y1es079ZXmyJunlFb6YIDU0q46RLxjL58q/RlbabzbXLClFW+KBbGXR4E9eOYDntVq bLEYchDZ8viium4F/IP13huv0AwkjKVEtoPZBGl2H7Fv7RagXsGTdvjUAcIeJd2NAVLz GGVAgzG05ZIeNJHpuoA2JSw8cXy8EeB9lrZtW/svrbSF7rJw2GTrqLupTcBa5cVZKGlP c23oVvhl1eqRSSoccv9EcxVAQzRQt5wcDpiCriB+1/3aaM5tZuNfm1tLY7UDbT+J3BdJ P6B0DVYdD3sYqslHjkhjyLJ70o4IrYoxal7mSf9UZa+KPpqaoqUxDUqdAoiEqk+KB0SV YUyw== X-Gm-Message-State: APzg51AWOI7zqm9qkHvb2RW2U6b51fSNat4mrTD1lNSYOPAwZiR2EiIL 30KPMYdl7LTz8o4v+eFQFK0= X-Google-Smtp-Source: ANB0Vdai8Ai69HuwiXJTCOM6FwviEsNLOgxvvBfhgZWOpPuuHrpa5AYPntmrzA0tO/7LlVzXvZDHYQ== X-Received: by 2002:a62:c9:: with SMTP id 192-v6mr1077949pfa.99.1535455245223; Tue, 28 Aug 2018 04:20:45 -0700 (PDT) Received: from roar.au.ibm.com (59-102-81-67.tpgi.com.au. [59.102.81.67]) by smtp.gmail.com with ESMTPSA id s3-v6sm3287917pgj.84.2018.08.28.04.20.41 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 Aug 2018 04:20:44 -0700 (PDT) From: Nicholas Piggin To: linux-mm@kvack.org Cc: Nicholas Piggin , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Andrew Morton , Linus Torvalds Subject: [PATCH 0/3] mm: dirty/accessed pte optimisations Date: Tue, 28 Aug 2018 21:20:31 +1000 Message-Id: <20180828112034.30875-1-npiggin@gmail.com> X-Mailer: git-send-email 2.18.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Here are some patches that didn't get much comment last time. It looks like x86 might benefit too though, so that might get people interested. I improved changelogs and added some comments, but no real logic changes. I hope I didn't get the x86 numbers wrong, they're more significant than I expected so it could quite well be a problem with my test (corrections welcome). Any data from other archs would be interesting too. Andrew perhaps if there aren't objections these could go in mm for a while. Thanks, Nick Nicholas Piggin (3): mm/cow: don't bother write protectig already write-protected huge pages mm/cow: optimise pte dirty/accessed bits handling in fork mm: optimise pte dirty/accessed bit setting by demand based pte insertion mm/huge_memory.c | 24 +++++++++++++++--------- mm/memory.c | 18 ++++++++++-------- mm/vmscan.c | 8 ++++++++ 3 files changed, 33 insertions(+), 17 deletions(-) -- 2.18.0