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=-3.1 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 426D5C43381 for ; Mon, 25 Feb 2019 20:30:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 126312084D for ; Mon, 25 Feb 2019 20:30:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZHf3nlOY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727481AbfBYUam (ORCPT ); Mon, 25 Feb 2019 15:30:42 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:35558 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727021AbfBYUam (ORCPT ); Mon, 25 Feb 2019 15:30:42 -0500 Received: by mail-pg1-f196.google.com with SMTP id e17so2966822pgd.2 for ; Mon, 25 Feb 2019 12:30:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=vH2mkKI4IItKEc8IoojF+FfVZDI5/MhLCKDGa5sz0w0=; b=ZHf3nlOYmozfI6iMnmTqQYTrV4iyplfReEUPHfvjJoKgl1aj+1Qs9XepvPzdhQdtzK RlLPMdqWA3n3vN/9yB2x0nFI6tPRSn96ebIpqlYG8RZ3pJ5Zjb198LHVI3bGHCrmZtsz 78d/AmYrnN5mUM8Kazd13HebbQRitKJwY7rNkRWUqUCKzsNTKWZfKvf7CzL04MtNNXem LG5VFghNOdF4s+xKJd1prs65XUE0ZGFSClD+O5RVZibIK7v6zO6eKbtMapBmZT8HzryG cEaIPBXaSJOXdELPjgaXaKQ+y83PpQ3BQ5zWw+FFR8ATE879v9OKtzodB1SBY1Xoypb6 kO4A== 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:mime-version :content-transfer-encoding; bh=vH2mkKI4IItKEc8IoojF+FfVZDI5/MhLCKDGa5sz0w0=; b=aHHAhzSW9C+1/mXZnfsLmqcrAl7o62Ttgqf+jgcMlW/rAPOsZvcuQaLPk73S9e00Qz VC7n9NWwSc8RlvyZB5swaVD45DcL5s82fg189n5/kYSj7kSvPxSv7FH0FuXNR/2Q9W4t q5YXB9g956oAL2QkWOTpUo8J2lxawV3knsicDkFJ+fqcmf/ImzmK09pzPR7SPUJGO5Xi jYtb2c16N0mjnjiB+h9e+5DSU4BVB9Z1Ko7+N2D8pPBVdOK8vfJLdpSlPLeL+GrPE3xI 9uwkjBwtyKWyvIdhEUGxPhjjXQV+sA1Iey8ZAXP+qfJNVYwhzrzFrFoqR9ue5UtOOaiO JRgQ== X-Gm-Message-State: AHQUAubtHfVgOgqhYanYaMNDcbYcWf91osoTaL5QzO9T5l0Ll6AT6i5m fAA1LNpc/AeoXLACtPMj/kM= X-Google-Smtp-Source: AHgI3Ia14eKm+TAQqiLkj/Yu4ttd46vaiiavPxcnFprQLBn4ByMgY7QCyxGpbBVvJDMzcvpFdScgnQ== X-Received: by 2002:a63:2c0e:: with SMTP id s14mr1254311pgs.132.1551126641850; Mon, 25 Feb 2019 12:30:41 -0800 (PST) Received: from tower.thefacebook.com ([2620:10d:c090:200::2:d960]) by smtp.gmail.com with ESMTPSA id s4sm6189885pfe.16.2019.02.25.12.30.40 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 25 Feb 2019 12:30:40 -0800 (PST) From: Roman Gushchin X-Google-Original-From: Roman Gushchin To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Matthew Wilcox , Johannes Weiner , kernel-team@fb.com, Roman Gushchin Subject: [PATCH 0/3] vmalloc enhancements Date: Mon, 25 Feb 2019 12:30:34 -0800 Message-Id: <20190225203037.1317-1-guro@fb.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The patchset contains few changes to the vmalloc code, which are leading to some performance gains and code simplification. Also, it exports a number of pages, used by vmalloc(), in /proc/meminfo. Patch (1) removes some redundancy on __vunmap(). Patch (2) separates memory allocation and data initialization in alloc_vmap_area() Patch (3) adds vmalloc counter to /proc/meminfo. v3->v2: - switched back to atomic after more accurate perf measurements: no visible perf difference - added perf stacktraces in commmit message of (1) v2->v1: - rebased on top of current mm tree - switch from atomic to percpu vmalloc page counter RFC->v1: - removed bogus empty lines (suggested by Matthew Wilcox) - made nr_vmalloc_pages static (suggested by Matthew Wilcox) - dropped patch 3 from RFC patchset, will post later with some other changes - dropped RFC Roman Gushchin (3): mm: refactor __vunmap() to avoid duplicated call to find_vm_area() mm: separate memory allocation and actual work in alloc_vmap_area() mm: show number of vmalloc pages in /proc/meminfo fs/proc/meminfo.c | 2 +- include/linux/vmalloc.h | 2 + mm/vmalloc.c | 107 ++++++++++++++++++++++++++-------------- 3 files changed, 73 insertions(+), 38 deletions(-) -- 2.20.1