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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 21CBCC54FCC for ; Tue, 21 Apr 2020 15:57:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B01C206E9 for ; Tue, 21 Apr 2020 15:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728550AbgDUP5J (ORCPT ); Tue, 21 Apr 2020 11:57:09 -0400 Received: from gentwo.org ([3.19.106.255]:35046 "EHLO gentwo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726018AbgDUP5I (ORCPT ); Tue, 21 Apr 2020 11:57:08 -0400 Received: by gentwo.org (Postfix, from userid 1002) id B3BD640B07; Tue, 21 Apr 2020 15:57:07 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id B2F9A3EED6; Tue, 21 Apr 2020 15:57:07 +0000 (UTC) Date: Tue, 21 Apr 2020 15:57:07 +0000 (UTC) From: Christopher Lameter X-X-Sender: cl@www.lameter.com To: =?GB2312?B?1dS+/L/8?= cc: Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel@vivo.com Subject: Re:Re:Re: [PATCH] kmalloc_index optimization(add kmalloc max size check) In-Reply-To: Message-ID: References: User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="531401748-1821483078-1587484627=:5249" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --531401748-1821483078-1587484627=:5249 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT On Tue, 21 Apr 2020, 赵军奎 wrote: > >You could modify that to check for KMALLOC_MAX_SIZE with some more > >conditionals but then kmalloc_index) is written so that the compiler gets > >constant folding right. > For this point, I am afraid i didn`t catch your idea. > I am not sure how to modify it.... > Is there some similar code implementation in the kernel？ No. That is where you creativity and ingenuity come in. Otherwise you need to leave it alone. --531401748-1821483078-1587484627=:5249--