From patchwork Mon Aug 22 13:20:03 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xie Yisheng X-Patchwork-Id: 9293579 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C2152607D0 for ; Mon, 22 Aug 2016 13:24:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B555728420 for ; Mon, 22 Aug 2016 13:24:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A89B1287D8; Mon, 22 Aug 2016 13:24:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2EBBE28420 for ; Mon, 22 Aug 2016 13:24:52 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bbpCa-0000Jz-Pb; Mon, 22 Aug 2016 13:23:44 +0000 Received: from szxga03-in.huawei.com ([119.145.14.66]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bbpBz-00008Q-DT for linux-arm-kernel@lists.infradead.org; Mon, 22 Aug 2016 13:23:09 +0000 Received: from 172.24.1.36 (EHLO szxeml427-hub.china.huawei.com) ([172.24.1.36]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id CGQ15595; Mon, 22 Aug 2016 21:22:04 +0800 (CST) Received: from linux-ibm.site (10.175.102.37) by szxeml427-hub.china.huawei.com (10.82.67.182) with Microsoft SMTP Server id 14.3.235.1; Mon, 22 Aug 2016 21:21:52 +0800 From: Xie Yisheng To: , Subject: [RFC PATCH v3 1/2] mm/hugetlb: Introduce ARCH_HAS_GIGANTIC_PAGE Date: Mon, 22 Aug 2016 21:20:03 +0800 Message-ID: <1471872004-59365-2-git-send-email-xieyisheng1@huawei.com> X-Mailer: git-send-email 1.7.12.4 In-Reply-To: <1471872004-59365-1-git-send-email-xieyisheng1@huawei.com> References: <1471872004-59365-1-git-send-email-xieyisheng1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.57BAFC7E.0230, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: ba5a9c95776c3dd62ba37ed7d927fe2f X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160822_062307_936192_D0D98FB3 X-CRM114-Status: GOOD ( 10.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, mhocko@suse.com, linux-mm@kvack.org, catalin.marinas@arm.com, sudeep.holla@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, dave.hansen@intel.com, robh+dt@kernel.org, guohanjun@huawei.com, n-horiguchi@ah.jp.nec.com, linux-arm-kernel@lists.infradead.org, mike.kravetz@oracle.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Avoid making ifdef get pretty unwieldy if many ARCHs support gigantic page. No functional change with this patch. Signed-off-by: Xie Yisheng Acked-by: Michal Hocko Acked-by: Naoya Horiguchi --- arch/s390/Kconfig | 1 + arch/x86/Kconfig | 1 + fs/Kconfig | 3 +++ mm/hugetlb.c | 2 +- 4 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index e751fe2..a8c8fa3 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -72,6 +72,7 @@ config S390 select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV select ARCH_HAS_SG_CHAIN select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c580d8c..2fdc300 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -29,6 +29,7 @@ config X86 select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_GIGANTIC_PAGE if X86_64 select ARCH_HAS_KCOV if X86_64 select ARCH_HAS_PMEM_API if X86_64 select ARCH_HAS_MMIO_FLUSH diff --git a/fs/Kconfig b/fs/Kconfig index 2bc7ad7..b938205 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -199,6 +199,9 @@ config HUGETLBFS config HUGETLB_PAGE def_bool HUGETLBFS +config ARCH_HAS_GIGANTIC_PAGE + bool + source "fs/configfs/Kconfig" source "fs/efivarfs/Kconfig" diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 87e11d8..8488dcc 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1022,7 +1022,7 @@ static int hstate_next_node_to_free(struct hstate *h, nodemask_t *nodes_allowed) ((node = hstate_next_node_to_free(hs, mask)) || 1); \ nr_nodes--) -#if (defined(CONFIG_X86_64) || defined(CONFIG_S390)) && \ +#if defined(CONFIG_ARCH_HAS_GIGANTIC_PAGE) && \ ((defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || \ defined(CONFIG_CMA)) static void destroy_compound_gigantic_page(struct page *page,