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From:   Dmitry Rokosov <ddrokosov@salutedevices.com>
To:     <hannes@cmpxchg.org>, <mhocko@kernel.org>,
        <roman.gushchin@linux.dev>, <shakeelb@google.com>,
        <muchun.song@linux.dev>, <akpm@linux-foundation.org>
CC:     <kernel@sberdevices.ru>, <rockosov@gmail.com>,
        <cgroups@vger.kernel.org>, <linux-mm@kvack.org>,
        <linux-kernel@vger.kernel.org>, <bpf@vger.kernel.org>,
        Dmitry Rokosov <ddrokosov@salutedevices.com>
Subject: [PATCH v3 3/3] mm: memcg: add reminder comment for the memcg v2 events
Date:   Thu, 23 Nov 2023 10:19:45 +0300
Message-ID: <20231123071945.25811-4-ddrokosov@salutedevices.com>
In-Reply-To: <20231123071945.25811-1-ddrokosov@salutedevices.com>
References: <20231123071945.25811-1-ddrokosov@salutedevices.com>
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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