From patchwork Fri Oct 12 03:59:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 10637843 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C25BF14E2 for ; Fri, 12 Oct 2018 04:16:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B14A02BE81 for ; Fri, 12 Oct 2018 04:16:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A4E4E2BED5; Fri, 12 Oct 2018 04:16:45 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E60F02BE81 for ; Fri, 12 Oct 2018 04:16:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=xdsXVz2ZpTuxND1COoAW0XGbNgCumwDIGm4CgLNURXw=; b=n/XSNQkBXs7+Mhqm9HpKXJS+yu I/StevKvMq/SvHNy1l9QLMMihgYBZyIHKjV8WoIoIqI3rtYmDA8mfQ9R8uj9B3CJ1w4ZYHisbd95T kfIc/oYd7U5c8/HLXDBEeuYxDiFsbdaiGmqQK0crJN1x4ujezzAcM1pmMikZzYcTk7jkEnhbFKRiV 0cgifS8LvVzimCHyJzWmSk59pC93IGn6Fp6WATKExu5qOHTXCB3ykmJE8+lN5a19X7PY0NyiupmcF /ttopNu4SD3AeEXZKHXEPv01cRsQjzsX6RZmBzmXsUSB5VhHF27dlxgKydNWxgftygvqNQ+B5Cnyq /1pp26eQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gAosR-0004oA-9w; Fri, 12 Oct 2018 04:16:39 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gAocx-00073H-6o for linux-arm-kernel@lists.infradead.org; Fri, 12 Oct 2018 04:00:43 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CE81B15BF; Thu, 11 Oct 2018 21:00:29 -0700 (PDT) Received: from p8cg001049571a15.blr.arm.com (p8cg001049571a15.blr.arm.com [10.162.0.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 087C03F5B7; Thu, 11 Oct 2018 21:00:25 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 1/5] mm/hugetlb: Enable PUD level huge page migration Date: Fri, 12 Oct 2018 09:29:55 +0530 Message-Id: <1539316799-6064-2-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1539316799-6064-1-git-send-email-anshuman.khandual@arm.com> References: <1539316799-6064-1-git-send-email-anshuman.khandual@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181011_210039_280682_50EC339D X-CRM114-Status: GOOD ( 11.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: steve.capper@arm.com, catalin.marinas@arm.com, punit.agrawal@arm.com, will.deacon@arm.com, Steven.Price@arm.com, akpm@linux-foundation.org, mhocko@kernel.org, n-horiguchi@ah.jp.nec.com, suzuki.poulose@arm.com, mike.kravetz@oracle.com MIME-Version: 1.0 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 Architectures like arm64 have PUD level HugeTLB pages for certain configs (1GB huge page is PUD based on ARM64_4K_PAGES base page size) that can be enabled for migration. It can be achieved through checking for PUD_SHIFT order based HugeTLB pages during migration. Signed-off-by: Anshuman Khandual --- include/linux/hugetlb.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 6b68e34..9c1b77f 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -483,7 +483,8 @@ static inline bool hugepage_migration_supported(struct hstate *h) { #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION if ((huge_page_shift(h) == PMD_SHIFT) || - (huge_page_shift(h) == PGDIR_SHIFT)) + (huge_page_shift(h) == PUD_SHIFT) || + (huge_page_shift(h) == PGDIR_SHIFT)) return true; else return false;