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From: Song Liu <songliubraving@fb.com>
To: <linux-mm@kvack.org>
Cc: <matthew.wilcox@oracle.com>, <kirill.shutemov@linux.intel.com>,
	<kernel-team@fb.com>, <william.kucharski@oracle.com>,
	<chad.mynhier@oracle.com>, <mike.kravetz@oracle.com>,
	Song Liu <songliubraving@fb.com>
Subject: [PATCH 2/3] mm,thp: stats for file backed THP
Date: Wed, 12 Jun 2019 22:21:50 -0700	[thread overview]
Message-ID: <20190613052151.3782835-3-songliubraving@fb.com> (raw)
In-Reply-To: <20190613052151.3782835-1-songliubraving@fb.com>

In preparation for non-shmem THP, this patch adds two stats and exposes
them in /proc/meminfo

Signed-off-by: Song Liu <songliubraving@fb.com>
---
 fs/proc/meminfo.c      | 4 ++++
 include/linux/mmzone.h | 2 ++
 mm/vmstat.c            | 2 ++
 3 files changed, 8 insertions(+)

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/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",
-- 
2.17.1


  parent reply	other threads:[~2019-06-13  5:22 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-13  5:21 [PATCH 0/3] Enable THP for text section of non-shmem files Song Liu
2019-06-13  5:21 ` [PATCH 1/3] mm: check compound_head(page)->mapping in filemap_fault() Song Liu
2019-06-13  5:21 ` Song Liu [this message]
2019-06-13  5:21 ` [PATCH 3/3] mm,thp: add read-only THP support for (non-shmem) FS Song Liu

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