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Message-Id: <1365163198-29726-10-git-send-email-kirill.shutemov@linux.intel.com>
Date: Fri, 5 Apr 2013 14:59:33 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Andrea Arcangeli <aarcange@...hat.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Al Viro <viro@...iv.linux.org.uk>, Hugh Dickins <hughd@...gle.com>,
Wu Fengguang <fengguang.wu@...el.com>, Jan Kara <jack@...e.cz>,
Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org,
Andi Kleen <ak@...ux.intel.com>,
Matthew Wilcox <matthew.r.wilcox@...el.com>,
"Kirill A. Shutemov" <kirill@...temov.name>,
Hillf Danton <dhillf@...il.com>, Dave Hansen <dave@...1.net>,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCHv3, RFC 09/34] thp: represent file thp pages in meminfo and friends
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
The patch adds new zone stat to count file transparent huge pages and
adjust related places.
For now we don't count mapped or dirty file thp pages separately.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
---
drivers/base/node.c | 10 ++++++++++
fs/proc/meminfo.c | 6 ++++++
include/linux/mmzone.h | 1 +
mm/mmap.c | 3 +++
mm/page_alloc.c | 7 ++++++-
5 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index fac124a..eed3763 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -118,11 +118,18 @@ static ssize_t node_read_meminfo(struct device *dev,
"Node %d SUnreclaim: %8lu kB\n"
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
"Node %d AnonHugePages: %8lu kB\n"
+ "Node %d FileHugePages: %8lu kB\n"
#endif
,
nid, K(node_page_state(nid, NR_FILE_DIRTY)),
nid, K(node_page_state(nid, NR_WRITEBACK)),
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ nid, K(node_page_state(nid, NR_FILE_PAGES)
+ + node_page_state(nid, NR_FILE_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR),
+#else
nid, K(node_page_state(nid, NR_FILE_PAGES)),
+#endif
nid, K(node_page_state(nid, NR_FILE_MAPPED)),
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
nid, K(node_page_state(nid, NR_ANON_PAGES)
@@ -145,6 +152,9 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE))
, nid,
K(node_page_state(nid, NR_ANON_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR)
+ , nid,
+ K(node_page_state(nid, NR_FILE_TRANSPARENT_HUGEPAGES) *
HPAGE_PMD_NR));
#else
nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)));
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 1efaaa1..747ec70 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -41,6 +41,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
cached = global_page_state(NR_FILE_PAGES) -
total_swapcache_pages() - i.bufferram;
+ if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE))
+ cached += global_page_state(NR_FILE_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR;
if (cached < 0)
cached = 0;
@@ -103,6 +106,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
"AnonHugePages: %8lu kB\n"
+ "FileHugePages: %8lu kB\n"
#endif
,
K(i.totalram),
@@ -163,6 +167,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
HPAGE_PMD_NR)
+ ,K(global_page_state(NR_FILE_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR)
#endif
);
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index ab20a60..91fadd6 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -142,6 +142,7 @@ enum zone_stat_item {
NUMA_OTHER, /* allocation from other node */
#endif
NR_ANON_TRANSPARENT_HUGEPAGES,
+ NR_FILE_TRANSPARENT_HUGEPAGES,
NR_FREE_CMA_PAGES,
NR_VM_ZONE_STAT_ITEMS };
diff --git a/mm/mmap.c b/mm/mmap.c
index 49dc7d5..afb9088 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -135,6 +135,9 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin)
if (sysctl_overcommit_memory == OVERCOMMIT_GUESS) {
free = global_page_state(NR_FREE_PAGES);
free += global_page_state(NR_FILE_PAGES);
+ if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE))
+ free += global_page_state(NR_FILE_TRANSPARENT_HUGEPAGES)
+ * HPAGE_PMD_NR;
/*
* shmem pages shouldn't be counted as free in this
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ca7b01e..7a26038 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2963,6 +2963,7 @@ void show_free_areas(unsigned int filter)
{
int cpu;
struct zone *zone;
+ long cached;
for_each_populated_zone(zone) {
if (skip_free_areas_node(filter, zone_to_nid(zone)))
@@ -3112,7 +3113,11 @@ void show_free_areas(unsigned int filter)
printk("= %lukB\n", K(total));
}
- printk("%ld total pagecache pages\n", global_page_state(NR_FILE_PAGES));
+ cached = global_page_state(NR_FILE_PAGES);
+ if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE))
+ cached += global_page_state(NR_FILE_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR;
+ printk("%ld total pagecache pages\n", cached);
show_swap_cache_info();
}
--
1.7.10.4
--
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