From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755625Ab3CPRLM (ORCPT ); Sat, 16 Mar 2013 13:11:12 -0400 Received: from mail-pb0-f47.google.com ([209.85.160.47]:43754 "EHLO mail-pb0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751231Ab3CPRLL (ORCPT ); Sat, 16 Mar 2013 13:11:11 -0400 From: Jiang Liu To: Andrew Morton , David Rientjes Cc: Jiang Liu , Wen Congyang , Mel Gorman , Minchan Kim , KAMEZAWA Hiroyuki , Michal Hocko , Jianguo Wu , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2, part3 02/12] mm/ARM64: kill poison_init_mem() Date: Sun, 17 Mar 2013 01:03:23 +0800 Message-Id: <1363453413-8139-3-git-send-email-jiang.liu@huawei.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1363453413-8139-1-git-send-email-jiang.liu@huawei.com> References: <1363453413-8139-1-git-send-email-jiang.liu@huawei.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use free_reserved_area() to kill poison_init_mem() on ARM64. Signed-off-by: Jiang Liu Cc: Catalin Marinas Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- arch/arm64/mm/init.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index e58dd7f..b87bdb8 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -197,14 +197,6 @@ void __init bootmem_init(void) max_pfn = max_low_pfn = max; } -/* - * Poison init memory with an undefined instruction (0x0). - */ -static inline void poison_init_mem(void *s, size_t count) -{ - memset(s, 0, count); -} - #ifndef CONFIG_SPARSEMEM_VMEMMAP static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn) { @@ -386,8 +378,7 @@ void __init mem_init(void) void free_initmem(void) { - poison_init_mem(__init_begin, __init_end - __init_begin); - free_initmem_default(-1); + free_initmem_default(0); } #ifdef CONFIG_BLK_DEV_INITRD @@ -396,10 +387,8 @@ static int keep_initrd; void free_initrd_mem(unsigned long start, unsigned long end) { - if (!keep_initrd) { - poison_init_mem((void *)start, PAGE_ALIGN(end) - start); - free_reserved_area(start, end, -1, "initrd"); - } + if (!keep_initrd) + free_reserved_area(start, end, 0, "initrd"); } static int __init keepinitrd_setup(char *__unused) -- 1.7.9.5