mm: memcontrol: account kernel stack per node
Currently the kernel stack is being accounted per-zone. There is no need
to do that. In addition due to being per-zone, memcg has to keep a
separate MEMCG_KERNEL_STACK_KB. Make the stat per-node and deprecate
MEMCG_KERNEL_STACK_KB as memcg_stat_item is an extension of
node_stat_item. In addition localize the kernel stack stats updates to
account_kernel_stack().
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Link: http://lkml.kernel.org/r/20200630161539.1759185-1-shakeelb@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/vmstat.c b/mm/vmstat.c
index b171a76..2b866cb 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1140,10 +1140,6 @@ const char * const vmstat_text[] = {
"nr_zone_write_pending",
"nr_mlock",
"nr_page_table_pages",
- "nr_kernel_stack",
-#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK)
- "nr_shadow_call_stack",
-#endif
"nr_bounce",
#if IS_ENABLED(CONFIG_ZSMALLOC)
"nr_zspages",
@@ -1194,6 +1190,10 @@ const char * const vmstat_text[] = {
"nr_kernel_misc_reclaimable",
"nr_foll_pin_acquired",
"nr_foll_pin_released",
+ "nr_kernel_stack",
+#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK)
+ "nr_shadow_call_stack",
+#endif
/* enum writeback_stat_item counters */
"nr_dirty_threshold",