Re: [PATCH] doc: memcontrol: add description for oom_kill

From: Jonathan Corbet
Date: Tue Mar 02 2021 - 02:09:56 EST


Yang Shi <shy828301@xxxxxxxxx> writes:

> When debugging an oom issue, I found the oom_kill counter of memcg is
> confusing. At the first glance without checking document, I thought it
> just counts for memcg oom, but it turns out it counts both global and
> memcg oom.
>
> The cgroup v2 documents it, but the description is missed for cgroup v1.
>
> Signed-off-by: Yang Shi <shy828301@xxxxxxxxx>
> ---
> Documentation/admin-guide/cgroup-v1/memory.rst | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/admin-guide/cgroup-v1/memory.rst b/Documentation/admin-guide/cgroup-v1/memory.rst
> index 0936412e044e..44d5429636e2 100644
> --- a/Documentation/admin-guide/cgroup-v1/memory.rst
> +++ b/Documentation/admin-guide/cgroup-v1/memory.rst
> @@ -851,6 +851,9 @@ At reading, current status of OOM is shown.
> (if 1, oom-killer is disabled)
> - under_oom 0 or 1
> (if 1, the memory cgroup is under OOM, tasks may be stopped.)
> + - oom_kill integer counter
> + The number of processes belonging to this cgroup killed by any
> + kind of OOM killer.

Applied, thanks.

jon