From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756452Ab1KRTiK (ORCPT ); Fri, 18 Nov 2011 14:38:10 -0500 Received: from mail-yx0-f174.google.com ([209.85.213.174]:53846 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751300Ab1KRTiF (ORCPT ); Fri, 18 Nov 2011 14:38:05 -0500 From: David Daney To: linux-mips@linux-mips.org, ralf@linux-mips.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-embedded@vger.kernel.org, x86@kernel.org Cc: David Daney Subject: [PATCH RFC 2/5] extable: Skip sorting if sorted at build time. Date: Fri, 18 Nov 2011 11:37:45 -0800 Message-Id: <1321645068-20475-3-git-send-email-ddaney.cavm@gmail.com> X-Mailer: git-send-email 1.7.2.3 In-Reply-To: <1321645068-20475-1-git-send-email-ddaney.cavm@gmail.com> References: <1321645068-20475-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Daney If the build program sortextable has already sorted the exception table, don't sort it again. Signed-off-by: David Daney --- kernel/extable.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/kernel/extable.c b/kernel/extable.c index 5339705..fe35a63 100644 --- a/kernel/extable.c +++ b/kernel/extable.c @@ -35,10 +35,16 @@ DEFINE_MUTEX(text_mutex); extern struct exception_table_entry __start___ex_table[]; extern struct exception_table_entry __stop___ex_table[]; +/* Cleared by build time tools if the table is already sorted. */ +u32 __initdata main_extable_sort_needed = 1; + /* Sort the kernel's built-in exception table */ void __init sort_main_extable(void) { - sort_extable(__start___ex_table, __stop___ex_table); + if (main_extable_sort_needed) + sort_extable(__start___ex_table, __stop___ex_table); + else + pr_notice("__ex_table already sorted, skipping sort\n"); } /* Given an address, look for it in the exception tables. */ -- 1.7.2.3