oom_kill counter in CentOS 7 In Ubuntu 20.04 I can find oom_kill counter at file `/proc/vmstat`. Where I can find this metric in CentOS 7?

This feature is not available in Linux 3.10 which comes with CentOS 7.0.

The change was commited two years later:

_" mm/oom_kill: count global and memory cgroup oom kills"_