Re: [PATCH v2] cgroup: avoid css_set_lock in cgroup_css_set_fork()

[Michal Koutný]

On Tue, Jan 27, 2026 at 03:30:14PM +0100, Mateusz Guzik <mjguzik@xxxxxxxxx> wrote:
> ping? I need cgroups out of the way for further scalability work in fork+ exit

I got stuck on following:
- possible implementation with (simpler?) rwlock,
- effect of css_set_lock in cgroup_post_fork().

I want to try some measurements of the latter since I assume that
limits the effect of the elision in cgroup_css_set_fork(), doesn't it?
(IIUC, you'd see it again if you reduced the pidmap_lock contention.)

Regards,
Michal

Attachment: signature.asc
Description: PGP signature