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_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 EF927C28CBF for ; Mon, 27 May 2019 09:38:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C7C6521744 for ; Mon, 27 May 2019 09:38:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MmnXcabM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726724AbfE0Jix (ORCPT ); Mon, 27 May 2019 05:38:53 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:37155 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725973AbfE0Jix (ORCPT ); Mon, 27 May 2019 05:38:53 -0400 Received: by mail-lj1-f196.google.com with SMTP id h19so5719950ljj.4 for ; Mon, 27 May 2019 02:38:52 -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=KJULdVfLsRoB+sGyptDGkaVMQxwt1Boacmd0PqpEDts=; b=MmnXcabMcBI+WEeJsRnfddqU+lstsU0ktKmJQSl7uzI8EtRq8qnyMA1cBgVBf32wcl Qf9naQEpc4VuIe9mIUYjZTAYExdOX+zopaT++YhS0Ah4GF/kzgFipzmfNcc72WyW0nU8 9Ga3FDXngULiryXfN25QYjlUTI0Jg6KvDbl9WOhLzPtVw1d9KlKbjmBzwtppe6rpto3S CFWkdSmCO+oGvxbextYTgFnBuzzm+pV9u1qKr5cnN59/J3EO+LwtbbT84F903cE1Ise2 4F66WtEzW9yL+mTT9IeSpAWeRAPUhoF88aRpMSrakmjlm6LHilud+/g/RB/GfPLBU+06 Zyww== 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=KJULdVfLsRoB+sGyptDGkaVMQxwt1Boacmd0PqpEDts=; b=CuREjh1Ko1IRs5pcP5xKnEFqLCNx3W282Y7GgHFBymh2GX2DVJCO3JauxTq0GZ0mAK 0DmfVrwJdtb56GdZtu1J3werehRNUgiBFXrPhRpb09r+kArlBy/MgxwlNwDHZisLTtnz HVPvENvg8f2e4mV5PMAxZayALvr7eeYxA42C5SPNRaXv5E99H777bbSHKAsF81nH4wB4 WyuvZuMdSfj4B/vwM7z1oD/QJG4Wx2RXqwKsZS9kyzNMpYd5NeoOd9qe0XYF/i/vkfcB MiTjrDUIo6FHCkDMUo0uajbJna/q6xOgA6VTagFvsBC80eXhZfUWPp3PLnuI6f8WefES XpXg== X-Gm-Message-State: APjAAAWhzp37l+9krkxyQlVFmUYWvyHxcYSO1W2R84cKUNcmguIaeSSx 8B8k/JZ+PudcOAoFrrWz/vs= X-Google-Smtp-Source: APXvYqzzWrckWdhlUjfKT+Mr6KWs7IdSOmIQyO0BsfKDrAL58MmE+qhRLg1+HDh+WeyceMc9FuBwfA== X-Received: by 2002:a2e:8716:: with SMTP id m22mr8686777lji.128.1558949931317; Mon, 27 May 2019 02:38:51 -0700 (PDT) Received: from pc636.semobile.internal ([37.139.158.167]) by smtp.gmail.com with ESMTPSA id z26sm2176293lfg.31.2019.05.27.02.38.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 May 2019 02:38:50 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: Andrew Morton , linux-mm@kvack.org Cc: Roman Gushchin , Uladzislau Rezki , Hillf Danton , Michal Hocko , Matthew Wilcox , LKML , Thomas Garnier , Oleksiy Avramchenko , Steven Rostedt , Joel Fernandes , Thomas Gleixner , Ingo Molnar , Tejun Heo Subject: [PATCH v3 0/4] Some cleanups for the KVA/vmalloc Date: Mon, 27 May 2019 11:38:38 +0200 Message-Id: <20190527093842.10701-1-urezki@gmail.com> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Patch [1] removes an unused argument "node" from the __alloc_vmap_area() function and that is it. Patch [2] is not driven by any particular workload that fails or so, it is just better approach to handle one specific split case. Patch [3] some cleanups in merging path. Basically on a first step the mergeable node is detached and there is no reason to "unlink" it. The same concerns the second step unless it has been merged on first one. Patch [4] moves BUG_ON()/RB_EMPTY_NODE() checks under "unlink" logic. After [3] merging path "unlink" only linked nodes. Therefore we can say that removing detached object is a bug in all cases. v2->v3: - remove the odd comment from the [3]; v1->v2: - update the commit message. [2] patch; - fix typos in comments. [2] patch; - do the "preload" for NUMA awareness. [2] patch; Uladzislau Rezki (Sony) (4): mm/vmap: remove "node" argument mm/vmap: preload a CPU with one object for split purpose mm/vmap: get rid of one single unlink_va() when merge mm/vmap: move BUG_ON() check to the unlink_va() mm/vmalloc.c | 115 +++++++++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 89 insertions(+), 26 deletions(-) -- 2.11.0