From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 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 Content-Transfer-Encoding: 8BIT Message-Id: References: <20200429064626.16389-1-changhuaixin@linux.alibaba.com> <20200522182815.ezanmvbemhzq2fmm@treble> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: Josh Poimboeuf 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 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