Merge branch 'for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:
 "Three minor cleanup patches"

* 'for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  Use kvmalloc in cgroups-v1
  cgroup: minor tweak for logic to get cgroup css
  cgroup: Replace a seq_printf() call by seq_puts() in cgroup_print_ss_mask()