From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965644AbdCXOK4 (ORCPT ); Fri, 24 Mar 2017 10:10:56 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:33677 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965571AbdCXOKl (ORCPT ); Fri, 24 Mar 2017 10:10:41 -0400 Date: Fri, 24 Mar 2017 17:10:37 +0300 From: "Kirill A. Shutemov" To: Zi Yan Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kirill.shutemov@linux.intel.com, akpm@linux-foundation.org, minchan@kernel.org, vbabka@suse.cz, mgorman@techsingularity.net, mhocko@kernel.org, n-horiguchi@ah.jp.nec.com, khandual@linux.vnet.ibm.com, zi.yan@cs.rutgers.edu, dnellans@nvidia.com Subject: Re: [PATCH v4 04/11] mm: thp: introduce CONFIG_ARCH_ENABLE_THP_MIGRATION Message-ID: <20170324141037.2eyovzq2bmcdmwzu@node.shutemov.name> References: <20170313154507.3647-1-zi.yan@sent.com> <20170313154507.3647-5-zi.yan@sent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170313154507.3647-5-zi.yan@sent.com> User-Agent: NeoMutt/20170306 (1.8.0) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 13, 2017 at 11:45:00AM -0400, Zi Yan wrote: > From: Naoya Horiguchi > > Introduces CONFIG_ARCH_ENABLE_THP_MIGRATION to limit thp migration > functionality to x86_64, which should be safer at the first step. > > Signed-off-by: Naoya Horiguchi > --- > v1 -> v2: > - fixed config name in subject and patch description > --- > arch/x86/Kconfig | 4 ++++ > include/linux/huge_mm.h | 10 ++++++++++ > mm/Kconfig | 3 +++ > 3 files changed, 17 insertions(+) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 69188841717a..a24bc11c7aed 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -2276,6 +2276,10 @@ config ARCH_ENABLE_HUGEPAGE_MIGRATION > def_bool y > depends on X86_64 && HUGETLB_PAGE && MIGRATION > > +config ARCH_ENABLE_THP_MIGRATION > + def_bool y > + depends on X86_64 && TRANSPARENT_HUGEPAGE && MIGRATION > + TRANSPARENT_HUGEPAGE implies MIGRATION due to COMPACTION. -- Kirill A. Shutemov