Re: [PATCH bpf-next v3 00/17] mm: BPF OOM

[Michal Hocko]

On Mon 26-01-26 18:44:03, Roman Gushchin wrote:
> This patchset adds an ability to customize the out of memory
> handling using bpf.
> 
> It focuses on two parts:
> 1) OOM handling policy,
> 2) PSI-based OOM invocation.
> 
> The idea to use bpf for customizing the OOM handling is not new, but
> unlike the previous proposal [1], which augmented the existing task
> ranking policy, this one tries to be as generic as possible and
> leverage the full power of the modern bpf.
> 
> It provides a generic interface which is called before the existing OOM
> killer code and allows implementing any policy, e.g. picking a victim
> task or memory cgroup or potentially even releasing memory in other
> ways, e.g. deleting tmpfs files (the last one might require some
> additional but relatively simple changes).

Are you planning to write any highlevel documentation on how to use the
existing infrastructure to implement proper/correct OOM handlers with
these generic interfaces?
-- 
Michal Hocko
SUSE Labs