Re: [RFC PATCH 0/3] Cgroup-based THP control

[Michal Hocko]

On Thu 31-10-24 17:37:12, Stepanov Anatoly wrote:
> If we consider the inheritance approach (prctl + launcher), it's fine until we need to change
> THP mode property for several tasks at once, in this case some batch-change approach needed.

I do not follow. How is this any different from a single process? Or do
you mean to change the mode for an already running process?

> if, for example, process_madvise() would support task recursive logic, coupled with kind of
> MADV_HUGE + *ITERATE_ALL_VMA*, it would be helpful.
> In this case, the orchestration will be much easier.

Nope, process_madvise is pidfd based interface and making it recursive
seems simply impossible for most operations as the address space is very
likely different in each child process.


-- 
Michal Hocko
SUSE Labs