From patchwork Thu Nov 7 14:32:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shile Zhang X-Patchwork-Id: 11233049 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 98E691850 for ; Thu, 7 Nov 2019 14:33:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 78B93218AE for ; Thu, 7 Nov 2019 14:33:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389538AbfKGOdE (ORCPT ); Thu, 7 Nov 2019 09:33:04 -0500 Received: from out30-54.freemail.mail.aliyun.com ([115.124.30.54]:58364 "EHLO out30-54.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389205AbfKGOdD (ORCPT ); Thu, 7 Nov 2019 09:33:03 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R801e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04420;MF=shile.zhang@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0ThQoCKT_1573137161; Received: from e18g09479.et15sqa.tbsite.net(mailfrom:shile.zhang@linux.alibaba.com fp:SMTPD_---0ThQoCKT_1573137161) by smtp.aliyun-inc.com(127.0.0.1); Thu, 07 Nov 2019 22:32:57 +0800 From: shile.zhang@linux.alibaba.com To: Masahiro Yamada , Michal Marek , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Josh Poimboeuf , x86@kernel.org Cc: "H . Peter Anvin" , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, Shile Zhang Subject: [RFC PATCH 3/4] x86/unwind/orc: Skip sorting if BUILDTIME_ORCTABLE_SORT is configured Date: Thu, 7 Nov 2019 22:32:04 +0800 Message-Id: <20191107143205.206606-4-shile.zhang@linux.alibaba.com> X-Mailer: git-send-email 2.24.0.rc2 In-Reply-To: <20191107143205.206606-1-shile.zhang@linux.alibaba.com> References: <20191107143205.206606-1-shile.zhang@linux.alibaba.com> MIME-Version: 1.0 Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org From: Shile Zhang The orc_unwind and orc_unwind_ip tables are sorted at build time if BUILDTIME_ORCTABLE_SORT is configured, skip sort at boot time. Signed-off-by: Shile Zhang --- arch/x86/kernel/unwind_orc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c index 332ae6530fa8..2c2fa9ef116e 100644 --- a/arch/x86/kernel/unwind_orc.c +++ b/arch/x86/kernel/unwind_orc.c @@ -273,9 +273,11 @@ void __init unwind_init(void) return; } +#ifndef CONFIG_BUILDTIME_ORCTABLE_SORT /* Sort the .orc_unwind and .orc_unwind_ip tables: */ sort(__start_orc_unwind_ip, num_entries, sizeof(int), orc_sort_cmp, orc_sort_swap); +#endif /* Initialize the fast lookup table: */ lookup_num_blocks = orc_lookup_end - orc_lookup;