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Date: Sat, 27 Jun 2015 10:27:00 +0800
From: Xishi Qiu <qiuxishi@...wei.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
"Luck, Tony" <tony.luck@...el.com>,
Hanjun Guo <guohanjun@...wei.com>,
Xiexiuqi <xiexiuqi@...wei.com>, <leon@...n.nu>,
Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Dave Hansen <dave.hansen@...el.com>,
Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
Vlastimil Babka <vbabka@...e.cz>, Mel Gorman <mgorman@...e.de>
CC: Xishi Qiu <qiuxishi@...wei.com>, Linux MM <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [RFC v2 PATCH 6/8] mm: add free mirrored pages info
Add the count of free mirrored pages in the following paths:
/proc/meminfo
/proc/zoneinfo
/sys/devices/system/node/node XX/meminfo
/sys/devices/system/node/node XX/vmstat
Signed-off-by: Xishi Qiu <qiuxishi@...wei.com>
---
drivers/base/node.c | 17 +++++++++++------
fs/proc/meminfo.c | 6 ++++++
mm/page_alloc.c | 7 +++++--
3 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index a2aa65b..d1a3556 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -114,6 +114,9 @@ static ssize_t node_read_meminfo(struct device *dev,
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
"Node %d AnonHugePages: %8lu kB\n"
#endif
+#ifdef CONFIG_MEMORY_MIRROR
+ "Node %d MirrorFree: %8lu kB\n"
+#endif
,
nid, K(node_page_state(nid, NR_FILE_DIRTY)),
nid, K(node_page_state(nid, NR_WRITEBACK)),
@@ -130,14 +133,16 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE) +
node_page_state(nid, NR_SLAB_UNRECLAIMABLE)),
nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE)),
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE))
- , nid,
- K(node_page_state(nid, NR_ANON_TRANSPARENT_HUGEPAGES) *
- HPAGE_PMD_NR));
-#else
- nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)));
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ , nid, K(node_page_state(nid, NR_ANON_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR)
+#endif
+#ifdef CONFIG_MEMORY_MIRROR
+ , nid, K(node_page_state(nid, NR_FREE_MIRROR_PAGES))
#endif
+ );
+
n += hugetlb_report_node_meminfo(nid, buf + n);
return n;
}
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index d3ebf2e..d1ebb20 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -145,6 +145,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
"CmaTotal: %8lu kB\n"
"CmaFree: %8lu kB\n"
#endif
+#ifdef CONFIG_MEMORY_MIRROR
+ "MirrorFree: %8lu kB\n"
+#endif
,
K(i.totalram),
K(i.freeram),
@@ -204,6 +207,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
, K(totalcma_pages)
, K(global_page_state(NR_FREE_CMA_PAGES))
#endif
+#ifdef CONFIG_MEMORY_MIRROR
+ , K(global_page_state(NR_FREE_MIRROR_PAGES))
+#endif
);
hugetlb_report_meminfo(m);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index aea78a5..4c5bc50 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3268,7 +3268,7 @@ void show_free_areas(unsigned int filter)
" unevictable:%lu dirty:%lu writeback:%lu unstable:%lu\n"
" slab_reclaimable:%lu slab_unreclaimable:%lu\n"
" mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n"
- " free:%lu free_pcp:%lu free_cma:%lu\n",
+ " free:%lu free_pcp:%lu free_cma:%lu free_mirror:%lu\n",
global_page_state(NR_ACTIVE_ANON),
global_page_state(NR_INACTIVE_ANON),
global_page_state(NR_ISOLATED_ANON),
@@ -3287,7 +3287,8 @@ void show_free_areas(unsigned int filter)
global_page_state(NR_BOUNCE),
global_page_state(NR_FREE_PAGES),
free_pcp,
- global_page_state(NR_FREE_CMA_PAGES));
+ global_page_state(NR_FREE_CMA_PAGES),
+ global_page_state(NR_FREE_MIRROR_PAGES));
for_each_populated_zone(zone) {
int i;
@@ -3328,6 +3329,7 @@ void show_free_areas(unsigned int filter)
" free_pcp:%lukB"
" local_pcp:%ukB"
" free_cma:%lukB"
+ " free_mirror:%lukB"
" writeback_tmp:%lukB"
" pages_scanned:%lu"
" all_unreclaimable? %s"
@@ -3361,6 +3363,7 @@ void show_free_areas(unsigned int filter)
K(free_pcp),
K(this_cpu_read(zone->pageset->pcp.count)),
K(zone_page_state(zone, NR_FREE_CMA_PAGES)),
+ K(zone_page_state(zone, NR_FREE_MIRROR_PAGES)),
K(zone_page_state(zone, NR_WRITEBACK_TEMP)),
K(zone_page_state(zone, NR_PAGES_SCANNED)),
(!zone_reclaimable(zone) ? "yes" : "no")
--
2.0.0
--
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