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[67.231.145.42]) by mx.google.com with ESMTPS id s36si3977093pld.164.2019.06.21.17.05.27 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 21 Jun 2019 17:05:27 -0700 (PDT) Received-SPF: pass (google.com: domain of prvs=1076a8f7d5=songliubraving@fb.com designates 67.231.145.42 as permitted sender) client-ip=67.231.145.42; Authentication-Results: mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b="YCqTrT/J"; spf=pass (google.com: domain of prvs=1076a8f7d5=songliubraving@fb.com designates 67.231.145.42 as permitted sender) smtp.mailfrom="prvs=1076a8f7d5=songliubraving@fb.com"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=fb.com Received: from pps.filterd (m0044008.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5LNudUt026475 for ; Fri, 21 Jun 2019 17:05:27 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=DNX0Ai841ZgyA6yG9XH0uRWq8DS0N63a6b+fvROsjjM=; b=YCqTrT/JYASHpQEOOYkGYg92c16QN3f691f37DMGfg7VNFrKhjAdtGuCBrvVxwNr09w6 tohmnJ9WfVpElA6TQNfZEgq+itS38qXPwRjZ2zVNgQqSCnX5WEYxVtIX2JEJz15kdQua U1qRg8bLRHjdvvworvkgyXymApb4yBziE8Y= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2t99btr0pc-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 21 Jun 2019 17:05:27 -0700 Received: from mx-out.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Fri, 21 Jun 2019 17:05:25 -0700 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id DCC9D62E2D56; Fri, 21 Jun 2019 17:05:24 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig006.ftw2.facebook.com To: , , CC: , , , , , Song Liu Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v6 3/6] mm,thp: stats for file backed THP Date: Fri, 21 Jun 2019 17:05:09 -0700 Message-ID: <20190622000512.923867-4-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190622000512.923867-1-songliubraving@fb.com> References: <20190622000512.923867-1-songliubraving@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-21_16:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906210182 X-FB-Internal: deliver 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 In preparation for non-shmem THP, this patch adds a few stats and exposes them in /proc/meminfo, /sys/bus/node/devices//meminfo, and /proc//task//smaps. This patch is mostly a rewrite of Kirill A. Shutemov's earlier version: https://lkml.org/lkml/2017/1/26/284. Acked-by: Rik van Riel Signed-off-by: Song Liu --- drivers/base/node.c | 6 ++++++ fs/proc/meminfo.c | 4 ++++ fs/proc/task_mmu.c | 4 +++- include/linux/mmzone.h | 2 ++ mm/vmstat.c | 2 ++ 5 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 8598fcbd2a17..71ae2dc93489 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -426,6 +426,8 @@ static ssize_t node_read_meminfo(struct device *dev, "Node %d AnonHugePages: %8lu kB\n" "Node %d ShmemHugePages: %8lu kB\n" "Node %d ShmemPmdMapped: %8lu kB\n" + "Node %d FileHugePages: %8lu kB\n" + "Node %d FilePmdMapped: %8lu kB\n" #endif , nid, K(node_page_state(pgdat, NR_FILE_DIRTY)), @@ -451,6 +453,10 @@ static ssize_t node_read_meminfo(struct device *dev, nid, K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR), nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) * + HPAGE_PMD_NR), + nid, K(node_page_state(pgdat, NR_FILE_THPS) * + HPAGE_PMD_NR), + nid, K(node_page_state(pgdat, NR_FILE_PMDMAPPED) * HPAGE_PMD_NR) #endif ); diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 568d90e17c17..bac395fc11f9 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -136,6 +136,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v) global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR); show_val_kb(m, "ShmemPmdMapped: ", global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR); + show_val_kb(m, "FileHugePages: ", + global_node_page_state(NR_FILE_THPS) * HPAGE_PMD_NR); + show_val_kb(m, "FilePmdMapped: ", + global_node_page_state(NR_FILE_PMDMAPPED) * HPAGE_PMD_NR); #endif #ifdef CONFIG_CMA diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 01d4eb0e6bd1..0360e3b2ba89 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -413,6 +413,7 @@ struct mem_size_stats { unsigned long lazyfree; unsigned long anonymous_thp; unsigned long shmem_thp; + unsigned long file_thp; unsigned long swap; unsigned long shared_hugetlb; unsigned long private_hugetlb; @@ -563,7 +564,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, else if (is_zone_device_page(page)) /* pass */; else - VM_BUG_ON_PAGE(1, page); + mss->file_thp += HPAGE_PMD_SIZE; smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd), locked); } #else @@ -767,6 +768,7 @@ static void __show_smap(struct seq_file *m, const struct mem_size_stats *mss) SEQ_PUT_DEC(" kB\nLazyFree: ", mss->lazyfree); SEQ_PUT_DEC(" kB\nAnonHugePages: ", mss->anonymous_thp); SEQ_PUT_DEC(" kB\nShmemPmdMapped: ", mss->shmem_thp); + SEQ_PUT_DEC(" kB\nFilePmdMapped: ", mss->file_thp); SEQ_PUT_DEC(" kB\nShared_Hugetlb: ", mss->shared_hugetlb); seq_put_decimal_ull_width(m, " kB\nPrivate_Hugetlb: ", mss->private_hugetlb >> 10, 7); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 70394cabaf4e..827f9b777938 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -234,6 +234,8 @@ enum node_stat_item { NR_SHMEM, /* shmem pages (included tmpfs/GEM pages) */ NR_SHMEM_THPS, NR_SHMEM_PMDMAPPED, + NR_FILE_THPS, + NR_FILE_PMDMAPPED, NR_ANON_THPS, NR_UNSTABLE_NFS, /* NFS unstable pages */ NR_VMSCAN_WRITE, diff --git a/mm/vmstat.c b/mm/vmstat.c index fd7e16ca6996..6afc892a148a 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1158,6 +1158,8 @@ const char * const vmstat_text[] = { "nr_shmem", "nr_shmem_hugepages", "nr_shmem_pmdmapped", + "nr_file_hugepages", + "nr_file_pmdmapped", "nr_anon_transparent_hugepages", "nr_unstable", "nr_vmscan_write",