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=-4.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 69DACC4740C for ; Tue, 10 Sep 2019 01:27:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 348832171F for ; Tue, 10 Sep 2019 01:27:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dYDodNZN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391073AbfIJB1Q (ORCPT ); Mon, 9 Sep 2019 21:27:16 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:36659 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729327AbfIJB1Q (ORCPT ); Mon, 9 Sep 2019 21:27:16 -0400 Received: by mail-pg1-f194.google.com with SMTP id l21so8897453pgm.3 for ; Mon, 09 Sep 2019 18:27:15 -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=htVKbWpEm9QB8qGdRGMXDAO+pxBcl0ZnD2WqCc7LzfU=; b=dYDodNZNZBL5k3zCSxOWdPRcFUyUB01dhilO31VRCQCWzNTMmGKwgRqx0ezOfDNyAW Xam9LqMjWHWhmXYZ+UyPClwkIDonR2TO65P68AgHwdI+LfXGtXhOV+odbW27EuJiV4SP XTvrH2cyaxDU5S7EOTZIh8ZgmIO9Vta9yYvLfVVzJ6tPL8MOhtJkVxJZPSFFuj67j8ht keJg435MhybFE/gLA3crGRYdZ2lA8uk+6OFVaRys6lrMlTQ3wlHysXZ6BZlWF0dXyJBy 7keLQZaUsd4mzy4NYzg79RUQWhi3PbxSlYR1MYRG7hv9PUI8MXdUUzjCGpUVkyRvCYwr iBag== 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=htVKbWpEm9QB8qGdRGMXDAO+pxBcl0ZnD2WqCc7LzfU=; b=BbG73QIhhUL9H4GYqjTaWuanSRfKy01jYwREZX36S+TdFkX8pp5R306ZZ/wYvy1xGW J5NV5cbUXuvVZvc0QWlVTp7CkNmCnHdrByXwfzz4EslN1dvRrIPKvUExscxTWieApqUl bcMnYGDHk+i1Kk+IoXuMYH2USMUSwaF3d5GdOU50NErVnYyDhLNtC/iFRD/rYJCWJgeH tOTKtt6xkJScRNEyn5PVtBA6Goh4HEDY1z+OfdzRz6oeoBvM7ZCsBiW8aRMI1ehBGeat jEQ0PhlH1mJQ8UGIyj8k6YI+6gM9czqayLoh6bGCGbKuGMFxEPRn3n8DxbYethIMzOjM 0HRg== X-Gm-Message-State: APjAAAVQIXw0S4QyO9Mc8l19rOe3GoazLa/7ec4Ri7JLdShjiSZdBuMv oLqNMZW89slqFB7QVTOay7c= X-Google-Smtp-Source: APXvYqxUIk1rV0t0iVtAqOPrGBZ2YrYBDkkoRIbbfvd0laZuVU6CmCAT86RnUjmrgQPtc1DrgI+F5Q== X-Received: by 2002:a62:f246:: with SMTP id y6mr31513531pfl.22.1568078835198; Mon, 09 Sep 2019 18:27:15 -0700 (PDT) Received: from localhost.localdomain.localdomain ([2408:823c:c11:160:b8c3:8577:bf2f:3]) by smtp.gmail.com with ESMTPSA id b20sm19558629pff.158.2019.09.09.18.27.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Sep 2019 18:27:14 -0700 (PDT) From: Pengfei Li To: akpm@linux-foundation.org Cc: vbabka@suse.cz, cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, guro@fb.com, Pengfei Li Subject: [PATCH v3 0/4] mm, slab: Make kmalloc_info[] contain all types of names Date: Tue, 10 Sep 2019 09:26:48 +0800 Message-Id: <20190910012652.3723-1-lpf.vector@gmail.com> X-Mailer: git-send-email 2.21.0 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 Changes in v3 -- 1. restore __initconst (patch 1/4) 2. rename patch 3/4 3. add more clarification for patch 4/4 Changes in v2 -- 1. remove __initconst (patch 1/5) 2. squash patch 2/5 3. add ack tag from Vlastimil Babka There are three types of kmalloc, KMALLOC_NORMAL, KMALLOC_RECLAIM and KMALLOC_DMA. The name of KMALLOC_NORMAL is contained in kmalloc_info[].name, but the names of KMALLOC_RECLAIM and KMALLOC_DMA are dynamically generated by kmalloc_cache_name(). Patch1 predefines the names of all types of kmalloc to save the time spent dynamically generating names. The other 4 patches did some cleanup work. These changes make sense, and the time spent by new_kmalloc_cache() has been reduced by approximately 36.3%. Time spent by new_kmalloc_cache() 5.3-rc7 66264 5.3-rc7+patch 42188 Pengfei Li (4): mm, slab: Make kmalloc_info[] contain all types of names mm, slab: Remove unused kmalloc_size() mm, slab_common: use enum kmalloc_cache_type to iterate over kmalloc caches mm, slab_common: Make the loop for initializing KMALLOC_DMA start from 1 include/linux/slab.h | 20 --------- mm/slab.c | 7 +-- mm/slab.h | 2 +- mm/slab_common.c | 101 +++++++++++++++++++++++-------------------- 4 files changed, 59 insertions(+), 71 deletions(-) -- 2.21.0