From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753408AbZGNI5g (ORCPT ); Tue, 14 Jul 2009 04:57:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752895AbZGNI5f (ORCPT ); Tue, 14 Jul 2009 04:57:35 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:53936 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751625AbZGNI5f (ORCPT ); Tue, 14 Jul 2009 04:57:35 -0400 Message-ID: <4A5C488A.90204@cn.fujitsu.com> Date: Tue, 14 Jul 2009 16:57:46 +0800 From: Zhaolei User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: Ingo Molnar CC: linux-kernel@vger.kernel.org Subject: [PATCH] Remove initialization of page_table in one_page_table_init() Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Only judge if (!page_table) when CONFIG_DEBUG_PAGEALLOC or CONFIG_KMEMCHECK are defined, then we don't need to set init value for page_table. Signed-off-by: Zhao Lei --- arch/x86/mm/init_32.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 3cd7711..55da09b 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -108,13 +108,13 @@ static pmd_t * __init one_md_table_init(pgd_t *pgd) static pte_t * __init one_page_table_init(pmd_t *pmd) { if (!(pmd_val(*pmd) & _PAGE_PRESENT)) { - pte_t *page_table = NULL; + pte_t *page_table; if (after_bootmem) { #if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_KMEMCHECK) page_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE); -#endif if (!page_table) +#endif page_table = (pte_t *)alloc_bootmem_low_pages(PAGE_SIZE); } else -- 1.5.5.3