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=-3.8 required=3.0 tests=BAYES_00, 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 DCA1BC433E3 for ; Wed, 19 Aug 2020 03:03:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BABAD20657 for ; Wed, 19 Aug 2020 03:03:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727063AbgHSDDK convert rfc822-to-8bit (ORCPT ); Tue, 18 Aug 2020 23:03:10 -0400 Received: from out30-54.freemail.mail.aliyun.com ([115.124.30.54]:59579 "EHLO out30-54.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726605AbgHSDDJ (ORCPT ); Tue, 18 Aug 2020 23:03:09 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R411e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01f04427;MF=changhuaixin@linux.alibaba.com;NM=1;PH=DS;RN=13;SR=0;TI=SMTPD_---0U6BcqGk_1597806184; Received: from 30.27.116.4(mailfrom:changhuaixin@linux.alibaba.com fp:SMTPD_---0U6BcqGk_1597806184) by smtp.aliyun-inc.com(127.0.0.1); Wed, 19 Aug 2020 11:03:05 +0800 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Re: [PATCH v2 0/3] Build ORC fast lookup table in scripts/sorttable tool From: changhuaixin In-Reply-To: <20200807041802.18639-1-changhuaixin@linux.alibaba.com> Date: Wed, 19 Aug 2020 11:03:04 +0800 Cc: bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, 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: <20200723034643.33537-1-changhuaixin@linux.alibaba.com> <20200807041802.18639-1-changhuaixin@linux.alibaba.com> To: Ingo Molnar 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 Hi，Ingo This patchset reverts the hacks from patchset v1. Also it includes some other fixes upon v1 as suggested. Will you please have a look at this? The previous links are: https://lore.kernel.org/lkml/20200724135531.GB648324@gmail.com/ Thanks, huaixin > On Aug 7, 2020, at 12:17 PM, 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. It > adds a little more than 7ms to boot time when testing on the same CPU. > > Changelog v2: > 1. Write .orc_lookup section header via objtool > 2. Move two ORC lookup table macro from orc_lookup.h into orc_types.h > 3. Spell 'ORC' in capitalized fashion > > Huaixin Chang (3): > objtool: Write .orc_lookup section header > scripts/sorttable: Build ORC fast lookup table via sorttable tool > x86/unwind/orc: Simplify unwind_init() for x86 boot > > arch/x86/include/asm/orc_lookup.h | 16 ------ > arch/x86/include/asm/orc_types.h | 16 ++++++ > arch/x86/kernel/unwind_orc.c | 41 +-------------- > arch/x86/kernel/vmlinux.lds.S | 2 +- > scripts/sorttable.h | 96 +++++++++++++++++++++++++++++++--- > tools/arch/x86/include/asm/orc_types.h | 16 ++++++ > tools/objtool/orc_gen.c | 4 ++ > 7 files changed, 128 insertions(+), 63 deletions(-) > > -- > 2.14.4.44.g2045bb6