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 B86CCC282DA for ; Wed, 17 Apr 2019 19:40:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82E5E20651 for ; Wed, 17 Apr 2019 19:40:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="eNHc8dyn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732905AbfDQTkH (ORCPT ); Wed, 17 Apr 2019 15:40:07 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:41032 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729779AbfDQTkG (ORCPT ); Wed, 17 Apr 2019 15:40:06 -0400 Received: by mail-pl1-f193.google.com with SMTP id d1so12492067plj.8 for ; Wed, 17 Apr 2019 12:40:06 -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:mime-version :content-transfer-encoding; bh=gT/T9M0R5/BEi6TIlhU+Am5U1UIgoVTtygo47LRkjIc=; b=eNHc8dyn4U1XUlujtETs9A87f/6hUOrjt2MNGw93IXp8wvLubty2kvBZFdWrzuvyOJ zZw/1esaU+7NJFHlcbG8G5HSxtxenOcwOq+plPF3AMaGm5g8rnUmvefqVzZx3TEzt3fD KN9oUT2wYMS4kQ4PTNQ19uBRHK1QCEaYcC1g/5M9eRu2FsdxTMP3iVfnd4UbKa9H7NFL BdYxdoXTOXnQq7L84AugDtiQnrQWCnMQEmKq8b19tOUj7AKU7ilUEqAOeHDBs98QdCwq SL92Og5JDgI8zqqj2qncqqsGewBaLugHaBRssqE86Isc7s9WU6P54CdAlUh73s1joWZA 3Mhw== 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=gT/T9M0R5/BEi6TIlhU+Am5U1UIgoVTtygo47LRkjIc=; b=dm+rG61Oi6SS9cATa+O0azBdfZYXs8gQcZB/LmAMgpOhMeqbp1IrDepm4AagMBBPC8 qz4XMtVuYziwoIP69iLc3X8KZZR3NL5fyOwEEySPjM7BbvbuYLBMmvjUX3azf7lC8SYP Fmo0f43KSWI4UAu+1vVKixjhHZXZmGsrwdHnbF7PgF95yai4+0mhTjoQiwtIORm8m1w5 /xixTpTdmxDf4Zwj2NEQ5kU4TtbvHflDcJlB/CVkgaO4YjSLAt2CSHkLUKlQX8QZffoX Snpo/cwPD4PEV3iOA09gZ18FHQHJbibjZi0SeU9PjmHl/ldE6PtOoZIu0oCr9Eh5dZGd nWvQ== X-Gm-Message-State: APjAAAXLYJTc+s//PSY+Oke8JvWRRa34VEB1lWZQ+R5QlcDMginlrxto 4H/Tbx+Z89chw753+oe6gtvJjhj5W44= X-Google-Smtp-Source: APXvYqwvUKyOhiajy/fe1naJTzh7wzopFZ54w9JSFUM32mfLpFPHYOwHHyl9Ryr0EZcdmvxZyf0xvQ== X-Received: by 2002:a17:902:bb84:: with SMTP id m4mr51333883pls.302.1555530006246; Wed, 17 Apr 2019 12:40:06 -0700 (PDT) Received: from tower.thefacebook.com ([2620:10d:c090:200::3:856]) by smtp.gmail.com with ESMTPSA id v9sm8625949pgf.73.2019.04.17.12.40.04 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 12:40:05 -0700 (PDT) From: Roman Gushchin X-Google-Original-From: Roman Gushchin To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@fb.com, Matthew Wilcox , Johannes Weiner , Vlastimil Babka , Roman Gushchin Subject: [PATCH v4 0/2] vmalloc enhancements Date: Wed, 17 Apr 2019 12:40:00 -0700 Message-Id: <20190417194002.12369-1-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 removes a redundant operation in __vunmap() and exports a number of pages, used by vmalloc(), in /proc/meminfo. Patch (1) removes some redundancy on __vunmap(). Patch (2) adds vmalloc counter to /proc/meminfo. v4->v3: - rebased on top of current mm tree - dropped alloc_vmap_area() refactoring 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 (2): mm: refactor __vunmap() to avoid duplicated call to find_vm_area() mm: show number of vmalloc pages in /proc/meminfo fs/proc/meminfo.c | 2 +- include/linux/vmalloc.h | 2 ++ mm/vmalloc.c | 57 ++++++++++++++++++++++++++--------------- 3 files changed, 40 insertions(+), 21 deletions(-) -- 2.20.1