From patchwork Mon Aug 18 00:17:55 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Minchan Kim X-Patchwork-Id: 4732311 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A64F39F37E for ; Mon, 18 Aug 2014 00:19:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CEC0F2013A for ; Mon, 18 Aug 2014 00:19:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DA26720136 for ; Mon, 18 Aug 2014 00:19:46 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XJAeJ-00010Z-Ig; Mon, 18 Aug 2014 00:18:11 +0000 Received: from lgeamrelo04.lge.com ([156.147.1.127]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XJAe8-0000ne-H4 for linux-arm-kernel@lists.infradead.org; Mon, 18 Aug 2014 00:18:01 +0000 Received: from unknown (HELO localhost.localdomain) (10.177.222.156) by 156.147.1.127 with ESMTP; 18 Aug 2014 09:17:33 +0900 X-Original-SENDERIP: 10.177.222.156 X-Original-MAILFROM: minchan@kernel.org From: Minchan Kim To: Andrew Morton Subject: [PATCH v15 6/7] arm64: add pmd_[dirty|mkclean] for THP Date: Mon, 18 Aug 2014 09:17:55 +0900 Message-Id: <1408321076-2231-7-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1408321076-2231-1-git-send-email-minchan@kernel.org> References: <1408321076-2231-1-git-send-email-minchan@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140817_171800_874240_66CF3E4A X-CRM114-Status: UNSURE ( 8.00 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -3.0 (---) Cc: Jason Evans , Rik van Riel , Russell King , Minchan Kim , linux-api@vger.kernel.org, Hugh Dickins , linux-kernel@vger.kernel.org, Will Deacon , Catalin Marinas , linux-mm@kvack.org, zhangyanfei@cn.fujitsu.com, Michael Kerrisk , KOSAKI Motohiro , Johannes Weiner , "Kirill A. Shutemov" , Steve Capper , linux-arm-kernel@lists.infradead.org, Mel Gorman X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page. This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE support. Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Acked-by: Will Deacon Acked-by: Steve Capper Acked-by: Catalin Marinas Signed-off-by: Minchan Kim --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index ffe1ba0506d1..efb1b2fc4d39 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -259,10 +259,12 @@ static inline pmd_t pte_pmd(pte_t pte) #endif #define pmd_young(pmd) pte_young(pmd_pte(pmd)) +#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) #define pmd_mksplitting(pmd) pte_pmd(pte_mkspecial(pmd_pte(pmd))) #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) +#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) #define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK))