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=-0.3 required=3.0 tests=DATE_IN_PAST_24_48, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY 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 BCBC5C433DF for ; Wed, 27 May 2020 01:11:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A5BC2088E for ; Wed, 27 May 2020 01:11:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728091AbgE0BLr convert rfc822-to-8bit (ORCPT ); Tue, 26 May 2020 21:11:47 -0400 Received: from out30-131.freemail.mail.aliyun.com ([115.124.30.131]:49788 "EHLO out30-131.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727937AbgE0BLq (ORCPT ); Tue, 26 May 2020 21:11:46 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R201e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e07488;MF=changhuaixin@linux.alibaba.com;NM=1;PH=DS;RN=13;SR=0;TI=SMTPD_---0TzlIGHx_1590541902; Received: from 30.27.116.2(mailfrom:changhuaixin@linux.alibaba.com fp:SMTPD_---0TzlIGHx_1590541902) by smtp.aliyun-inc.com(127.0.0.1); Wed, 27 May 2020 09:11:44 +0800 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Re: [PATCH 0/2] Build ORC fast lookup table in scripts/sorttable tool From: changhuaixin In-Reply-To: <20200522182815.ezanmvbemhzq2fmm@treble> Date: Mon, 25 May 2020 11:33:00 +0800 Cc: changhuaixin , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, bp@alien8.de, hpa@zytor.com, luto@amacapital.net, michal.lkml@markovi.net, mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, x86@kernel.org, yamada.masahiro@socionext.com Content-Transfer-Encoding: 8BIT Message-Id: References: <20200429064626.16389-1-changhuaixin@linux.alibaba.com> <20200522182815.ezanmvbemhzq2fmm@treble> To: Josh Poimboeuf X-Mailer: Apple Mail (2.3445.104.11) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thanks for your kindly reply. Let me have a check. > On May 23, 2020, at 2:28 AM, Josh Poimboeuf wrote: > > On Wed, Apr 29, 2020 at 02:46:24PM +0800, Huaixin Chang wrote: >> Move building of fast lookup table from boot to sorttable tool. This saves us >> 6380us boot time on Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz with cores. >> >> Huaixin Chang (2): >> scripts/sorttable: Build orc fast lookup table via sorttable tool >> x86/unwind/orc: Remove unwind_init() from x86 boot >> >> arch/x86/include/asm/unwind.h | 2 - >> arch/x86/kernel/setup.c | 2 - >> arch/x86/kernel/unwind_orc.c | 51 ---------------------- >> scripts/sorttable.h | 99 ++++++++++++++++++++++++++++++++++++++++--- >> 4 files changed, 92 insertions(+), 62 deletions(-) > > I tested this (rebased on tip/master), it seems to break ORC > completely... e.g. /proc/self/stack is empty. > > -- > Josh