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 770EEC07542 for ; Mon, 27 May 2019 15:18:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D56C21871 for ; Mon, 27 May 2019 15:18:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VQ9NJi36" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726452AbfE0PS5 (ORCPT ); Mon, 27 May 2019 11:18:57 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:33698 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725991AbfE0PS5 (ORCPT ); Mon, 27 May 2019 11:18:57 -0400 Received: by mail-lj1-f196.google.com with SMTP id w1so15029928ljw.0 for ; Mon, 27 May 2019 08:18:55 -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=YAM42W4nl7Xrv+602WPlcincJeD4Ntz7L8w8jwaNl0c=; b=VQ9NJi36DfshM8MP2kweAEWk741ksZscNvFPiZjFXx0nT5AzXSauCHBeE0WJIHgqaY BNuAc5tc16R7hJ8HLN0whUtkUwKZT8HJGgCOVYWqETue3iojBVgK9UAwSHruHYFle6jB RSc/Tvq/UUeUGiVXcnCD+PzUIieXGblDvftvXPWX/EXXL60GcbWW2rNmn8f2oMRaiDOW Gp+MkJ9OGWciJdLAfmyrYnX4eyONJDiXr82BC6/mw7zqnYx4MLp6+PEG+2q/FQzOYIJN 7Ho0DJ+8cCi1/d3JVay4+3lmb26TdDwWfwoU97yfGaLO5UbWOeCvZaKIizyBUQjqiIUh Wcjg== 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=YAM42W4nl7Xrv+602WPlcincJeD4Ntz7L8w8jwaNl0c=; b=sujlVwFqbbjIYOLgray8fGxB1rlK2J0P3SdbBYZgxw6C9tlQcaMHlxnrhsDe4mQKmL KzhdfdXOxLONGKNbAIKbAjhyFJJHy99I8Eub2ZH1QU+8PPH7upO7nSS6zwpl5KQme/or UoQuOaObbfeANEbCVVggWHXn2Cnx3jH4nzY6ydvS00qdhuxeH2VnqHuMvXlKeXNsARfV ruhWSrhmWlkCZtaSZC6n1B7ibGmQ+VzjDtcNWrDgaf15lMFfLtPPpT7XLK2SLwPalADb f8NyhhnQEgn99h7J44HUOCQdh1NXInYTQF+P+ZAps3TPD9QGkF158he3fbg3REqzxzfg ogFg== X-Gm-Message-State: APjAAAUsxqABhTPVOEeBFe2GonKRd7Xt9iOIjc8HbGrm/HK8eHzKPmQx ebIFh5wZwGBcUgunGI+em6w= X-Google-Smtp-Source: APXvYqxD62DsXuniXEJslrnzdRm4D6x1+aa+aiF4J04y4ulWJ0Sk7kXPdjqDoq4c18XrEgykDRxvoQ== X-Received: by 2002:a2e:81d9:: with SMTP id s25mr22145532ljg.139.1558970334984; Mon, 27 May 2019 08:18:54 -0700 (PDT) Received: from pc636.semobile.internal ([37.139.158.167]) by smtp.gmail.com with ESMTPSA id h25sm2308701ljb.80.2019.05.27.08.18.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 May 2019 08:18:54 -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 v4 0/4] Some cleanups for the KVA/vmalloc Date: Mon, 27 May 2019 17:18:39 +0200 Message-Id: <20190527151843.27416-1-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] replaces BUG_ON() by WARN_ON() and moves it 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. v3->v4: - Replace BUG_ON by WARN_ON() in [4]; - Update the commit message of the [4]. 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: switch to WARN_ON() and move it under unlink_va() mm/vmalloc.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 81 insertions(+), 18 deletions(-) -- 2.11.0