cgroup: helper for checking rstat participation of css

There are a few places where a conditional check is performed to validate a
given css on its rstat participation. This new helper tries to make the
code more readable where this check is performed.

Signed-off-by: JP Kobryn <inwardvessel@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
JP Kobryn 2025-05-14 17:19:36 -07:00 • committed by Tejun Heo
commit 93b35663f2