selftests/cgroup: Fix incorrect variable check in online_cpus()

"OFFLINE_CPUS" is a literal string that is always non-empty. It should
be "$OFFLINE_CPUS" to check the variable's value instead.

Signed-off-by: Hongfu Li <lihongfu@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hongfu Li 2026-05-08 11:34:53 +08:00 • committed by Tejun Heo
commit 7ea04cc4fe