samples/cgroup: rm unused MEMCG_EVENTS macro

MEMCG_EVENTS is never referenced in the code. Just remove it.

Link: https://lkml.kernel.org/r/20250903073100.2477-1-zhangjiao2@cmss.chinamobile.com
Signed-off-by: zhang jiao <zhangjiao2@cmss.chinamobile.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/samples/cgroup/memcg_event_listener.c b/samples/cgroup/memcg_event_listener.c
index a1667fe2489a607a18c4cfc821959aa2ca876e59..41425edbd88a699522ef31463cd9cd3794493bf9 100644 (file)
--- a/samples/cgroup/memcg_event_listener.c
+++ b/samples/cgroup/memcg_event_listener.c
@@ -18,8 +18,6 @@
 #include <sys/inotify.h>
 #include <unistd.h>
 
-#define MEMCG_EVENTS "memory.events"
-
 /* Size of buffer to use when reading inotify events */
 #define INOTIFY_BUFFER_SIZE 8192