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=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_HIGH,UNPARSEABLE_RELAY,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 20AB8C070C3 for ; Wed, 12 Sep 2018 20:25:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B80A82146F for ; Wed, 12 Sep 2018 20:25:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="MFLdfO7y" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B80A82146F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728291AbeIMBbT (ORCPT ); Wed, 12 Sep 2018 21:31:19 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:49636 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726069AbeIMBbT (ORCPT ); Wed, 12 Sep 2018 21:31:19 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w8CKO5BD084468; Wed, 12 Sep 2018 20:24:59 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=ELoFsMn5o98Zemi8jSkmdeZ9l+KekLYzbuwPi51dF9A=; b=MFLdfO7yDSZkFeIlwVCoNg04udYGoj/1O1FDBkNuLhGvg2mbFpQ0ZQsxp139E37iwGrh dSHfjTHGlBwtYu5xasIWYjhvVyxgLSVoHyf33HKBzhKK3iSoKOwVclhE4t1/aLhc2dIo 36NjsT+rSIOOsKNPQEaOqetqQAsZv3cQq5g8J4YPCbd9mZNWrYrMGJJURGeBV0NPUga5 pyUz75nz5mpKo7elvlwLPQZUah1uwE/7uuf+CUGDSps9IpeckAkMBW0boog9Vjyqxa0T giV8kjOpmYUVi3wair2A9nCgdoE1DgNJf31zw8LjuUtEqPVegpIG6RssJBfZh+SPFx6e Wg== Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp2120.oracle.com with ESMTP id 2mc6cpvd7g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 12 Sep 2018 20:24:59 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w8CKOxjb015214 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 12 Sep 2018 20:24:59 GMT Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w8CKOwiN015836; Wed, 12 Sep 2018 20:24:58 GMT Received: from pp-ThinkCentre-M82.us.oracle.com (/10.132.93.61) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 12 Sep 2018 13:24:58 -0700 From: Prakash Sangappa To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: dave.hansen@intel.com, mhocko@suse.com, nao.horiguchi@gmail.com, akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, khandual@linux.vnet.ibm.com, steven.sistare@oracle.com, prakash.sangappa@oracle.com Subject: [PATCH V2 2/6] Add /proc//numa_vamaps file for numa node information Date: Wed, 12 Sep 2018 13:24:00 -0700 Message-Id: <1536783844-4145-3-git-send-email-prakash.sangappa@oracle.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536783844-4145-1-git-send-email-prakash.sangappa@oracle.com> References: <1536783844-4145-1-git-send-email-prakash.sangappa@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9014 signatures=668708 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809120201 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce supporting data structures and file operations. Later patch will provide changes for generating file content. Signed-off-by: Prakash Sangappa Reviewed-by: Steve Sistare --- fs/proc/base.c | 2 ++ fs/proc/internal.h | 1 + fs/proc/task_mmu.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 45 insertions(+) diff --git a/fs/proc/base.c b/fs/proc/base.c index ccf86f1..1af99ae 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2927,6 +2927,7 @@ static const struct pid_entry tgid_base_stuff[] = { REG("maps", S_IRUGO, proc_pid_maps_operations), #ifdef CONFIG_NUMA REG("numa_maps", S_IRUGO, proc_pid_numa_maps_operations), + REG("numa_vamaps", S_IRUGO, proc_numa_vamaps_operations), #endif REG("mem", S_IRUSR|S_IWUSR, proc_mem_operations), LNK("cwd", proc_cwd_link), @@ -3313,6 +3314,7 @@ static const struct pid_entry tid_base_stuff[] = { #endif #ifdef CONFIG_NUMA REG("numa_maps", S_IRUGO, proc_pid_numa_maps_operations), + REG("numa_vamaps", S_IRUGO, proc_numa_vamaps_operations), #endif REG("mem", S_IRUSR|S_IWUSR, proc_mem_operations), LNK("cwd", proc_cwd_link), diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 5185d7f..994c7fd 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -298,6 +298,7 @@ extern const struct file_operations proc_pid_smaps_operations; extern const struct file_operations proc_pid_smaps_rollup_operations; extern const struct file_operations proc_clear_refs_operations; extern const struct file_operations proc_pagemap_operations; +extern const struct file_operations proc_numa_vamaps_operations; extern unsigned long task_vsize(struct mm_struct *); extern unsigned long task_statm(struct mm_struct *, diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 0e2095c..02b553c 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1583,6 +1583,16 @@ struct numa_maps_private { struct numa_maps md; }; +#define NUMA_VAMAPS_BUFSZ 1024 +struct numa_vamaps_private { + struct mm_struct *mm; + struct numa_maps md; + u64 vm_start; + size_t from; + size_t count; /* residual bytes in buf at offset 'from' */ + char buf[NUMA_VAMAPS_BUFSZ]; /* buffer */ +}; + static void gather_stats(struct page *page, struct numa_maps *md, int pte_dirty, unsigned long nr_pages) { @@ -1848,6 +1858,34 @@ static int pid_numa_maps_open(struct inode *inode, struct file *file) sizeof(struct numa_maps_private)); } +static int numa_vamaps_open(struct inode *inode, struct file *file) +{ + struct mm_struct *mm; + struct numa_vamaps_private *nvm; + nvm = kzalloc(sizeof(struct numa_vamaps_private), GFP_KERNEL); + if (!nvm) + return -ENOMEM; + + mm = proc_mem_open(inode, PTRACE_MODE_READ); + if (IS_ERR(mm)) { + kfree(nvm); + return PTR_ERR(mm); + } + nvm->mm = mm; + file->private_data = nvm; + return 0; +} + +static int numa_vamaps_release(struct inode *inode, struct file *file) +{ + struct numa_vamaps_private *nvm = file->private_data; + + if (nvm->mm) + mmdrop(nvm->mm); + kfree(nvm); + return 0; +} + const struct file_operations proc_pid_numa_maps_operations = { .open = pid_numa_maps_open, .read = seq_read, @@ -1855,4 +1893,8 @@ const struct file_operations proc_pid_numa_maps_operations = { .release = proc_map_release, }; +const struct file_operations proc_numa_vamaps_operations = { + .open = numa_vamaps_open, + .release = numa_vamaps_release, +}; #endif /* CONFIG_NUMA */ -- 2.7.4