cgroup: include missing header for struct irq_work

To compile cgroup.c with PREEMPT_RT=y include header which declares
struct irq_work.

Fixes: 9311e6c29b ("cgroup: Fix sleeping from invalid context warning on PREEMPT_RT")

Signed-off-by: Bert Karwatzki <spasswolf@web.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Bert Karwatzki 2025-11-11 18:01:43 +01:00 • committed by Tejun Heo
commit 01a743550b