From patchwork Fri Feb 15 22:08:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 10815991 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 9C88913B5 for ; Fri, 15 Feb 2019 22:10:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C1F930235 for ; Fri, 15 Feb 2019 22:10:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 804DD3025E; Fri, 15 Feb 2019 22:10:23 +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=-3.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 07B5E30235 for ; Fri, 15 Feb 2019 22:10:23 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9CDC08E001A; Fri, 15 Feb 2019 17:09:36 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 97C938E0014; Fri, 15 Feb 2019 17:09:36 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 81C528E001A; Fri, 15 Feb 2019 17:09:36 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-qt1-f199.google.com (mail-qt1-f199.google.com [209.85.160.199]) by kanga.kvack.org (Postfix) with ESMTP id 512DA8E0014 for ; Fri, 15 Feb 2019 17:09:36 -0500 (EST) Received: by mail-qt1-f199.google.com with SMTP id p5so10415672qtp.3 for ; Fri, 15 Feb 2019 14:09:36 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:dkim-signature:from:to:cc:subject :date:message-id:in-reply-to:references:reply-to:mime-version :content-transfer-encoding; bh=EYbvEGR5T55O/whT3ormGMsc4OjejtdS/ncHWvxXxkQ=; b=MUHQDaEVIPp3/aw4XN9JN+BnKiZl6OceBlytjQdqRv3683E5A+3ytiB+fIlVEwaOtZ Mzzb8dA8JWLj2WeRLGSPGPMP2lG6FnvgaTHC8GdNRaGVisz3tJH8ln8e0T/5eJgmschT JeeycWMkLoMRuGW3H8EsihBGHnx8v85DLR0iZXvKQJ6DDlyzINlqGD/GiNcz527su6HB o72kyXjfeuiuDMKXsujO1cTDRLULj0imbjjHO+aVSSDbcR8LMIsNIKteYWIzPW9qyL/K YVzYzfbPcMXXV2kA3A1dWU4g67JJOFKpHM4pOyZiyefhGKewn7q1IOLkrT3bpOYO8Cjl L+/A== X-Gm-Message-State: AHQUAuYrdqfqjdRUIIXcz4s8Erqa+fZgD/tx/CjBvN+jZibgqsN6AEA+ SPPTvxbGdbBTl78PcrgNovfjb1G2NRAGABHrqoAnWxSm0OU9MOTt6wJUAB+C7DPjsnXEzkGvQrP Eo1dVi+L7/MO3/tCvDUHNPCD6Dsth8t1qPo2+593tOy1PeQCkbf345C262Uw4rNpqtw== X-Received: by 2002:a0c:a326:: with SMTP id u35mr9156737qvu.190.1550268576103; Fri, 15 Feb 2019 14:09:36 -0800 (PST) X-Google-Smtp-Source: AHgI3IbIiJcWOAzt7wT3DgS/fNJGl7//ERbB2c/fXPhrWMm9DVPKw8/T6YaucM8dlwjTxpzdDWhY X-Received: by 2002:a0c:a326:: with SMTP id u35mr9156696qvu.190.1550268575534; Fri, 15 Feb 2019 14:09:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1550268575; cv=none; d=google.com; s=arc-20160816; b=fSYJHRlnXMMNEaEKx8p7bjFa66uyywRnwECp/OutFwoBLZEJl3mFmtJPT5AZIRa8Hm uWWnwOEusthJhLtVQnoLYU3L4ld5FMzLwtDAdPqxQOBXaFlnpV7MsjLg+kIMn7oSbLBl wE7CEa1zovinXl6rUyx+oFqBG8plJ57pLc19tEt3eXlgYaE3L9/9Q9ixRq5MAgovI27d 5OeA3UFY2yFHRzZndvQiCvbTcduQo55noKlryG5g4TRPT3XvyYZyucQ/uqcbEFAn3VqA cnZN8YD/2mqGHVg8EhOayYkEs5nuYUVBpK7pHsNfyEkxhTPhl42rxmXAepRToUprg1Qa PXDA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:reply-to:references :in-reply-to:message-id:date:subject:cc:to:from:dkim-signature :dkim-signature; bh=EYbvEGR5T55O/whT3ormGMsc4OjejtdS/ncHWvxXxkQ=; b=y7hY6tCmPbCn8z5E+xmLK0q5Tg+/yD3e0B/btj9EF0rCIjMgBnSolfD5SntCQEcQS1 PEsjZPWbW81+3iSJgj4FfFMxFnMSURyTQ6c/ZwlyWuEW+1SRnNHqakiULpbYLbbfMlzc qGVbvXT3GilEhdlHY0Z4qCxBarjHSRm7Rwso0x6Rt21XBYTss0gX7ESrQHofKSJg+ZEk M+TBi1Dyo2sKN/Qn5xMBR8Xfv4d1mj14D9F+5tyIfIAQuqMqm1FuqWc2Pv9MUjuH6rJs 5TwPlpVqPmcYzbgpH83u6dQRGmOOaMvNURIQWneH5xdC0sXZiszhUi4vEJuHLRl2FBP4 IjeQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@sent.com header.s=fm2 header.b=i82NFi9c; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=a41IDbu3; spf=pass (google.com: domain of zi.yan@sent.com designates 64.147.123.25 as permitted sender) smtp.mailfrom=zi.yan@sent.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sent.com Received: from wout2-smtp.messagingengine.com (wout2-smtp.messagingengine.com. [64.147.123.25]) by mx.google.com with ESMTPS id j6si578330qtb.108.2019.02.15.14.09.35 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 15 Feb 2019 14:09:35 -0800 (PST) Received-SPF: pass (google.com: domain of zi.yan@sent.com designates 64.147.123.25 as permitted sender) client-ip=64.147.123.25; Authentication-Results: mx.google.com; dkim=pass header.i=@sent.com header.s=fm2 header.b=i82NFi9c; dkim=pass header.i=@messagingengine.com header.s=fm2 header.b=a41IDbu3; spf=pass (google.com: domain of zi.yan@sent.com designates 64.147.123.25 as permitted sender) smtp.mailfrom=zi.yan@sent.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sent.com 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP 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