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. This patchset make hierarchy_id allocation use idr instead of ida and implement task_cgroup_path_from_hierarchy(). In the process, the yucky ida cyclic allocation is replaced with idr_alloc_cyclic(). 0001-cgroup-refactor-hierarchy_id-handling.patch 0002-cgroup-drop-hierarchy_id_lock.patch 0003-cgroup-make-hierarchy_id-use-cyclic-idr.patch 0004-cgroup-implement-task_cgroup_path_from_hierarchy.patch 0001-0002 prepare for conversion to idr, which 0003 does. 0004 implements the new function. This patchset is on top of next-20130412 as idr_alloc_cyclic() patch is currently in -mm. Given that this isn't an urgent thing and the merge window is just around the corner, it'd be probably best to route these through cgroup/for-3.11 once v3.10-rc1 drops. These patches are also available in the following git branch. git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-task_cgroup_path_from_hierarchy And it actually reduces LOC. Woot Woot. include/linux/cgroup.h | 2 kernel/cgroup.c | 128 +++++++++++++++++++++++++++++++++---------------- 2 files changed, 89 insertions(+), 41 deletions(-) -- tejun _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
