[PATCH v3 3/3] mm: memcg: add reminder comment for the memcg v2 events

Dmitry Rokosov
2023-11-23T07:20:02Z

To maintain the correct state, it is important to ensure that events for
the memory cgroup v2 are aligned with the sample cgroup codes.

Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
---
mm/memcontrol.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index e8ca4bdcb03c..a75c4584f58f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6555,6 +6555,10 @@ static ssize_t memory_max_write(struct kernfs_open_file *of,
return nbytes;
}

+/*
+ * Note: don't forget to update the 'samples/cgroup/memcg_event_listener'
+ * if any new events become available.
+ */
static void __memory_events_show(struct seq_file *m, atomic_long_t *events)
{
seq_printf(m, "low %lu\n", atomic_long_read(&events[MEMCG_LOW]));
--
2.36.0