From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx153.postini.com [74.125.245.153]) by kanga.kvack.org (Postfix) with SMTP id 2A5F36B0031 for ; Mon, 5 Aug 2013 05:21:43 -0400 (EDT) Message-ID: <51FF6E67.80909@asianux.com> Date: Mon, 05 Aug 2013 17:20:39 +0800 From: Chen Gang MIME-Version: 1.0 Subject: [PATCH v2] mm/Kconfig: add MMU dependency for MIGRATION. References: <51F9CA7D.2070506@asianux.com> <20130805073233.GB10146@dhcp22.suse.cz> <51FF6656.4070809@gmail.com> <20130805090301.GF10146@dhcp22.suse.cz> <20130805090539.GH10146@dhcp22.suse.cz> <51FF6CC2.3060308@gmail.com> In-Reply-To: <51FF6CC2.3060308@gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: "sfr@canb.auug.org.au" , rientjes@google.com, riel@redhat.com, isimatu.yasuaki@jp.fujitsu.com, Andrew Morton , linux-mm@kvack.org MIGRATION need depend on MMU, or allmodconfig for sh architecture which without MMU will be fail for compiling. The related error: CC mm/migrate.o mm/migrate.c: In function 'remove_migration_pte': mm/migrate.c:134:3: error: implicit declaration of function 'pmd_trans_huge' [-Werror=implicit-function-declaration] if (pmd_trans_huge(*pmd)) ^ mm/migrate.c:149:2: error: implicit declaration of function 'is_swap_pte' [-Werror=implicit-function-declaration] if (!is_swap_pte(pte)) ^ ... Also need let CMA depend on MMU, or when NOMMU, if select CMA, it will select MIGRATION by force. Signed-off-by: Chen Gang Reviewed-by: Michal Hocko --- mm/Kconfig | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/Kconfig b/mm/Kconfig index 256bfd0..e847f19 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -245,7 +245,7 @@ config COMPACTION config MIGRATION bool "Page migration" def_bool y - depends on NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE || COMPACTION || CMA + depends on (NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE || COMPACTION || CMA) && MMU help Allows the migration of the physical location of pages of processes while the virtual addresses are not changed. This is useful in @@ -522,7 +522,7 @@ config MEM_SOFT_DIRTY config CMA bool "Contiguous Memory Allocator" - depends on HAVE_MEMBLOCK + depends on HAVE_MEMBLOCK && MMU select MIGRATION select MEMORY_ISOLATION help -- 1.7.7.6 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org