From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> References: <1321645068-20475-1-git-send-email-ddaney.cavm@gmail.com> Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=JAZFN0rrR5RwoS38mMQQ6FuAa7XM8IRQfDR5QS02QSQ=; b=iYUpo6+72huDT5qtAwpzEjy6py0yce4ARKIV5qiSGt10jFuAjvTXtspt0CRn+QxphX UBSyHO7vqBpU8+8MRJ+ZbybwGtbmJM27YxEV0BF5zMMVnKGgaWH7MkPQclSMCbF+FkxI OHGIt5RStDWF/UHWv1QMMVvsUqN4wt6uAqRXQ= In-Reply-To: <1321645068-20475-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-arch-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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 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