cgroup: implement task_cgroup_path_from_hierarchy()

kdbus folks want a sane way to determine the cgroup path that a given
task belongs to on a given hierarchy, which is a reasonble thing to
expect from cgroup core.

Implement task_cgroup_path_from_hierarchy().

v2: Dropped unnecessary NULL check on the return value of
    task_cgroup_from_root() as suggested by Li Zefan.

Signed-off-by: Tejun Heo <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Li Zefan <[email protected]>
Cc: Kay Sievers <[email protected]>
Cc: Lennart Poettering <[email protected]>
Cc: Daniel Mack <[email protected]>

0 files changed, 0 insertions, 0 deletions