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mm, rmap: account shmem thp pages

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Let's add ShmemHugePages and ShmemPmdMapped fields into meminfo and
smaps.  It indicates how many times we allocate and map shmem THP.

NR_ANON_TRANSPARENT_HUGEPAGES is renamed to NR_ANON_THPS.

Link: http://lkml.kernel.org/r/1466021202-61880-27-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2016-07-26 15:26:10 -07:00 • committed by Linus Torvalds
commit 65c453778a
8 changed files with 58 additions and 15 deletions
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13
drivers/base/node.c
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@ -113,6 +113,8 @@ 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 ShmemHugePages: %8lu kB\n"
"Node %d ShmemPmdMapped: %8lu kB\n"
#endif
,
nid, K(node_page_state(nid, NR_FILE_DIRTY)),
@ -131,10 +133,13 @@ static ssize_t node_read_meminfo(struct device *dev,
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));
nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)),
nid, K(node_page_state(nid, NR_ANON_THPS) *
HPAGE_PMD_NR),
nid, K(node_page_state(nid, NR_SHMEM_THPS) *
HPAGE_PMD_NR),
nid, K(node_page_state(nid, NR_SHMEM_PMDMAPPED) *
HPAGE_PMD_NR));
#else
nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)));
#endif