From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2A20C4360F for ; Fri, 15 Feb 2019 22:09:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D208222DF for ; Fri, 15 Feb 2019 22:09:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sent.com header.i=@sent.com header.b="i82NFi9c"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="a41IDbu3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393520AbfBOWJl (ORCPT ); Fri, 15 Feb 2019 17:09:41 -0500 Received: from wout2-smtp.messagingengine.com ([64.147.123.25]:35133 "EHLO wout2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393469AbfBOWJf (ORCPT ); Fri, 15 Feb 2019 17:09:35 -0500 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id B6AA9310A; Fri, 15 Feb 2019 17:09:33 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Fri, 15 Feb 2019 17:09:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sent.com; h=from :to:cc:subject:date:message-id:in-reply-to:references:reply-to :mime-version:content-transfer-encoding; s=fm2; bh=EYbvEGR5T55O/ whT3ormGMsc4OjejtdS/ncHWvxXxkQ=; b=i82NFi9clRWllhWB+1WAQDVTJSxf2 jkZ+OZAH1x/MG1hPo+I91aXGzCqHNZqN/VbppOW4xJYXO4kNZfKmmcVg6gK/K8YM fsd2Eew3vCg8A5AxWQpjCGI2G22ajdn05x7sotOilp56JcFmTWtM+rDWjnCxsOPI mAtnifkzdIbVhOTNOBOTM3e5rOLAJ7g4zykkGNg9Jc/UYSG2BhMq+n106msRfV9i ZIOVP1PIZVEnuj/NwEZFV6XpzaSW5WDH0RdHpc9iAvwRaGnPCWbLkcLWsFtSNqsx eToUv6aDMEdcKSq6T89UMR1bm4VTPcZRPoce57vAp475TeBacI19f1Jgw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:reply-to:subject :to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=EYbvEGR5T55O/whT3ormGMsc4OjejtdS/ncHWvxXxkQ=; b=a41IDbu3 5RvxGLl/hTeM1wR3EQ9zuSaqUa3N/oLwo1XIObh6/XEIjeq8g8IFvjLlyqals5Sa ckfgVcYysYgWcyp/M++lW2PcvAXKaTHPKVEXYvTEfcmnPU+87hMTXTzkacOFTebi /gmTBScgG9ZTVAaKE29y1CX+rg4dwjekj0vLs9uuO9kfeDV7ASd2gy0n4azIeLKc A1jGIaQFVmk1iXi20m5uRATMbjTLmL1KM0qVAaaMS0Oj3X0Q3K6r2hzrPJv9p7aJ KfP5r7sSURNfkcQrpyxop7Y8d5r2tjMu/jLM9DS64ZFD23CsgRYFGOkZQYY6WVfp hjV+pVn0qBJ72g== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedtledruddtjedgudehkecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfhuthenuceurghilhhouhhtmecu fedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkf fojghfrhgggfestdekredtredttdenucfhrhhomhepkghiucgjrghnuceoiihirdihrghn sehsvghnthdrtghomheqnecukfhppedvudeirddvvdekrdduuddvrddvvdenucfrrghrrg hmpehmrghilhhfrhhomhepiihirdihrghnsehsvghnthdrtghomhenucevlhhushhtvghr ufhiiigvpedvvd X-ME-Proxy: Received: from nvrsysarch5.nvidia.com (thunderhill.nvidia.com [216.228.112.22]) by mail.messagingengine.com (Postfix) with ESMTPA id E5B2AE4511; Fri, 15 Feb 2019 17:09:31 -0500 (EST) From: Zi Yan To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Dave Hansen , Michal Hocko , "Kirill A . Shutemov" , Andrew Morton , Vlastimil Babka , Mel Gorman , John Hubbard , Mark Hairgrove , Nitin Gupta , David Nellans , Zi Yan Subject: [RFC PATCH 23/31] mm: support 1GB THP pagemap support. Date: Fri, 15 Feb 2019 14:08:48 -0800 Message-Id: <20190215220856.29749-24-zi.yan@sent.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190215220856.29749-1-zi.yan@sent.com> References: <20190215220856.29749-1-zi.yan@sent.com> Reply-To: ziy@nvidia.com MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zi Yan Print page flags properly. Signed-off-by: Zi Yan --- fs/proc/task_mmu.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index f0ec9edab2f3..ccf8ce760283 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1373,6 +1373,45 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end, return err; } +static int pagemap_pud_range(pud_t *pudp, unsigned long addr, unsigned long end, + struct mm_walk *walk) +{ + struct vm_area_struct *vma = walk->vma; + struct pagemapread *pm = walk->private; + int err = 0; + u64 flags = 0, frame = 0; + pud_t pud = *pudp; + struct page *page = NULL; + + if (vma->vm_flags & VM_SOFTDIRTY) + flags |= PM_SOFT_DIRTY; + + if (pud_present(pud)) { + page = pud_page(pud); + + flags |= PM_PRESENT; + if (pud_soft_dirty(pud)) + flags |= PM_SOFT_DIRTY; + if (pm->show_pfn) + frame = pud_pfn(pud) + + ((addr & ~PMD_MASK) >> PAGE_SHIFT); + } + + if (page && page_mapcount(page) == 1) + flags |= PM_MMAP_EXCLUSIVE; + + for (; addr != end; addr += PAGE_SIZE) { + pagemap_entry_t pme = make_pme(frame, flags); + + err = add_to_pagemap(addr, &pme, pm); + if (err) + break; + if (pm->show_pfn && (flags & PM_PRESENT)) + frame++; + } + return err; +} + #ifdef CONFIG_HUGETLB_PAGE /* This function walks within one hugetlb entry in the single call */ static int pagemap_hugetlb_range(pte_t *ptep, unsigned long hmask, @@ -1479,6 +1518,9 @@ static ssize_t pagemap_read(struct file *file, char __user *buf, if (!pm.buffer) goto out_mm; +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + pagemap_walk.pud_entry = pagemap_pud_range; +#endif pagemap_walk.pmd_entry = pagemap_pmd_range; pagemap_walk.pte_hole = pagemap_pte_hole; #ifdef CONFIG_HUGETLB_PAGE -- 2.20.1