[PATCH v4 2/7] mm: memcontrol: convert NR_ANON_THPS account to pages
From: Muchun Song
Date: Thu Dec 10 2020 - 23:26:37 EST
The unit of NR_ANON_THPS is HPAGE_PMD_NR. Convert the NR_ANON_THPS
account to pages.
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
drivers/base/node.c | 15 +++++++++------
fs/proc/meminfo.c | 2 +-
include/linux/mmzone.h | 9 +++++++++
mm/huge_memory.c | 3 ++-
mm/memcontrol.c | 20 ++++++--------------
mm/page_alloc.c | 2 +-
mm/rmap.c | 7 ++++---
mm/vmstat.c | 11 +++++++++--
8 files changed, 41 insertions(+), 28 deletions(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 04f71c7bc3f8..6da0c3508bc9 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -461,8 +461,7 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(sunreclaimable)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
,
- nid, K(node_page_state(pgdat, NR_ANON_THPS) *
- HPAGE_PMD_NR),
+ nid, K(node_page_state(pgdat, NR_ANON_THPS)),
nid, K(node_page_state(pgdat, NR_SHMEM_THPS) *
HPAGE_PMD_NR),
nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) *
@@ -519,10 +518,14 @@ static ssize_t node_read_vmstat(struct device *dev,
sum_zone_numa_state(nid, i));
#endif
- for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++)
- len += sysfs_emit_at(buf, len, "%s %lu\n",
- node_stat_name(i),
- node_page_state_pages(pgdat, i));
+ for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) {
+ unsigned long pages = node_page_state_pages(pgdat, i);
+
+ if (vmstat_item_print_in_thp(i))
+ pages /= HPAGE_PMD_NR;
+ len += sysfs_emit_at(buf, len, "%s %lu\n", node_stat_name(i),
+ pages);
+ }
return len;
}
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index d6fc74619625..a635c8a84ddf 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -129,7 +129,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
show_val_kb(m, "AnonHugePages: ",
- global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR);
+ global_node_page_state(NR_ANON_THPS));
show_val_kb(m, "ShmemHugePages: ",
global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR);
show_val_kb(m, "ShmemPmdMapped: ",
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index b593316bff3d..4ac95448421c 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -210,6 +210,15 @@ enum node_stat_item {
};
/*
+ * Returns true if the item should prints in THPs. The /proc/vmstat currently
+ * prints number of anon, file and shmem THPs. But the item is charged in pages.
+ */
+static __always_inline bool vmstat_item_print_in_thp(enum node_stat_item item)
+{
+ return item == NR_ANON_THPS;
+}
+
+/*
* Returns true if the value is measured in bytes (most vmstat values are
* measured in pages). This defines the API part, the internal representation
* might be different.
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 10dd3cae5f53..66ec454120de 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2178,7 +2178,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
lock_page_memcg(page);
if (atomic_add_negative(-1, compound_mapcount_ptr(page))) {
/* Last compound_mapcount is gone. */
- __dec_lruvec_page_state(page, NR_ANON_THPS);
+ __mod_lruvec_page_state(page, NR_ANON_THPS,
+ -HPAGE_PMD_NR);
if (TestClearPageDoubleMap(page)) {
/* No need in mapcount reference anymore */
for (i = 0; i < HPAGE_PMD_NR; i++)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 8818bf64d6fe..b18e25a5cdf3 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1532,7 +1532,7 @@ static struct memory_stat memory_stats[] = {
* on some architectures, the macro of HPAGE_PMD_SIZE is not
* constant(e.g. powerpc).
*/
- { "anon_thp", 0, NR_ANON_THPS },
+ { "anon_thp", PAGE_SIZE, NR_ANON_THPS },
{ "file_thp", 0, NR_FILE_THPS },
{ "shmem_thp", 0, NR_SHMEM_THPS },
#endif
@@ -1565,8 +1565,7 @@ static int __init memory_stats_init(void)
for (i = 0; i < ARRAY_SIZE(memory_stats); i++) {
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- if (memory_stats[i].idx == NR_ANON_THPS ||
- memory_stats[i].idx == NR_FILE_THPS ||
+ if (memory_stats[i].idx == NR_FILE_THPS ||
memory_stats[i].idx == NR_SHMEM_THPS)
memory_stats[i].ratio = HPAGE_PMD_SIZE;
#endif
@@ -4088,10 +4087,6 @@ static int memcg_stat_show(struct seq_file *m, void *v)
if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
continue;
nr = memcg_page_state_local(memcg, memcg1_stats[i]);
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- if (memcg1_stats[i] == NR_ANON_THPS)
- nr *= HPAGE_PMD_NR;
-#endif
seq_printf(m, "%s %lu\n", memcg1_stat_names[i], nr * PAGE_SIZE);
}
@@ -4122,10 +4117,6 @@ static int memcg_stat_show(struct seq_file *m, void *v)
if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
continue;
nr = memcg_page_state(memcg, memcg1_stats[i]);
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- if (memcg1_stats[i] == NR_ANON_THPS)
- nr *= HPAGE_PMD_NR;
-#endif
seq_printf(m, "total_%s %llu\n", memcg1_stat_names[i],
(u64)nr * PAGE_SIZE);
}
@@ -5653,10 +5644,11 @@ static int mem_cgroup_move_account(struct page *page,
__mod_lruvec_state(from_vec, NR_ANON_MAPPED, -nr_pages);
__mod_lruvec_state(to_vec, NR_ANON_MAPPED, nr_pages);
if (PageTransHuge(page)) {
- __dec_lruvec_state(from_vec, NR_ANON_THPS);
- __inc_lruvec_state(to_vec, NR_ANON_THPS);
+ __mod_lruvec_state(from_vec, NR_ANON_THPS,
+ -nr_pages);
+ __mod_lruvec_state(to_vec, NR_ANON_THPS,
+ nr_pages);
}
-
}
} else {
__mod_lruvec_state(from_vec, NR_FILE_PAGES, -nr_pages);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 469e28f95ce7..1700f52b7869 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5580,7 +5580,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR),
K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED)
* HPAGE_PMD_NR),
- K(node_page_state(pgdat, NR_ANON_THPS) * HPAGE_PMD_NR),
+ K(node_page_state(pgdat, NR_ANON_THPS)),
#endif
K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
node_page_state(pgdat, NR_KERNEL_STACK_KB),
diff --git a/mm/rmap.c b/mm/rmap.c
index 08c56aaf72eb..f59e92e26b61 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1144,7 +1144,8 @@ void do_page_add_anon_rmap(struct page *page,
* disabled.
*/
if (compound)
- __inc_lruvec_page_state(page, NR_ANON_THPS);
+ __mod_lruvec_page_state(page, NR_ANON_THPS,
+ HPAGE_PMD_NR);
__mod_lruvec_page_state(page, NR_ANON_MAPPED, nr);
}
@@ -1186,7 +1187,7 @@ void page_add_new_anon_rmap(struct page *page,
if (hpage_pincount_available(page))
atomic_set(compound_pincount_ptr(page), 0);
- __inc_lruvec_page_state(page, NR_ANON_THPS);
+ __mod_lruvec_page_state(page, NR_ANON_THPS, HPAGE_PMD_NR);
} else {
/* Anon THP always mapped first with PMD */
VM_BUG_ON_PAGE(PageTransCompound(page), page);
@@ -1292,7 +1293,7 @@ static void page_remove_anon_compound_rmap(struct page *page)
if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE))
return;
- __dec_lruvec_page_state(page, NR_ANON_THPS);
+ __mod_lruvec_page_state(page, NR_ANON_THPS, -HPAGE_PMD_NR);
if (TestClearPageDoubleMap(page)) {
/*
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 663f49ed1fd6..37c9e7b21e1e 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1624,8 +1624,12 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
if (is_zone_first_populated(pgdat, zone)) {
seq_printf(m, "\n per-node stats");
for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) {
+ unsigned long pages = node_page_state_pages(pgdat, i);
+
+ if (vmstat_item_print_in_thp(i))
+ pages /= HPAGE_PMD_NR;
seq_printf(m, "\n %-12s %lu", node_stat_name(i),
- node_page_state_pages(pgdat, i));
+ pages);
}
}
seq_printf(m,
@@ -1745,8 +1749,11 @@ static void *vmstat_start(struct seq_file *m, loff_t *pos)
v += NR_VM_NUMA_STAT_ITEMS;
#endif
- for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++)
+ for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) {
v[i] = global_node_page_state_pages(i);
+ if (vmstat_item_print_in_thp(i))
+ v[i] /= HPAGE_PMD_NR;
+ }
v += NR_VM_NODE_STAT_ITEMS;
global_dirty_limits(v + NR_DIRTY_BG_THRESHOLD,
--
2.11.0