Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753041Ab3DOJoY (ORCPT ); Mon, 15 Apr 2013 05:44:24 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:20897 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751812Ab3DOJoR convert rfc822-to-8bit (ORCPT ); Mon, 15 Apr 2013 05:44:17 -0400 X-IronPort-AV: E=Sophos;i="4.87,475,1363104000"; d="scan'208";a="7057093" From: Tang Chen To: gregkh@linuxfoundation.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, yinghai@kernel.org, akpm@linux-foundation.org, wency@cn.fujitsu.com, mgorman@suse.de, tj@kernel.org, liwanp@linux.vnet.ibm.com Cc: tangchen@cn.fujitsu.com, linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] mem-hotplug: Put kernel_physical_mapping_remove() declaration in CONFIG_MEMORY_HOTREMOVE. Date: Mon, 15 Apr 2013 17:46:46 +0800 Message-Id: <1366019207-27818-3-git-send-email-tangchen@cn.fujitsu.com> X-Mailer: git-send-email 1.7.10.1 In-Reply-To: <1366019207-27818-1-git-send-email-tangchen@cn.fujitsu.com> References: <1366019207-27818-1-git-send-email-tangchen@cn.fujitsu.com> MIME-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/04/15 17:42:33, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/04/15 17:42:35 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1433 Lines: 41 kernel_physical_mapping_remove() is only called by arch_remove_memory() in init_64.c, which is enclosed in CONFIG_MEMORY_HOTREMOVE. So when we don't configure CONFIG_MEMORY_HOTREMOVE, the compiler will give a warning: warning: ‘kernel_physical_mapping_remove’ defined but not used So put kernel_physical_mapping_remove() in CONFIG_MEMORY_HOTREMOVE. Signed-off-by: Tang Chen --- arch/x86/mm/init_64.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 474e28f..dafdeb2 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -1019,6 +1019,7 @@ void __ref vmemmap_free(struct page *memmap, unsigned long nr_pages) remove_pagetable(start, end, false); } +#ifdef CONFIG_MEMORY_HOTREMOVE static void __meminit kernel_physical_mapping_remove(unsigned long start, unsigned long end) { @@ -1028,7 +1029,6 @@ kernel_physical_mapping_remove(unsigned long start, unsigned long end) remove_pagetable(start, end, true); } -#ifdef CONFIG_MEMORY_HOTREMOVE int __ref arch_remove_memory(u64 start, u64 size) { unsigned long start_pfn = start >> PAGE_SHIFT; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/