thp: transparent hugepage vmstat
Add hugepage stat information to /proc/vmstat and /proc/meminfo.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index a65239c..ed257d1 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -101,6 +101,9 @@
#ifdef CONFIG_MEMORY_FAILURE
"HardwareCorrupted: %5lu kB\n"
#endif
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ "AnonHugePages: %8lu kB\n"
+#endif
,
K(i.totalram),
K(i.freeram),
@@ -128,7 +131,12 @@
K(i.freeswap),
K(global_page_state(NR_FILE_DIRTY)),
K(global_page_state(NR_WRITEBACK)),
- K(global_page_state(NR_ANON_PAGES)),
+ K(global_page_state(NR_ANON_PAGES)
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR
+#endif
+ ),
K(global_page_state(NR_FILE_MAPPED)),
K(global_page_state(NR_SHMEM)),
K(global_page_state(NR_SLAB_RECLAIMABLE) +
@@ -151,6 +159,10 @@
#ifdef CONFIG_MEMORY_FAILURE
,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10)
#endif
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
+ HPAGE_PMD_NR)
+#endif
);
hugetlb_report_meminfo(m);