cgroup.procs versus tasks (cgroups)

[Kevin Wilson]

Hi?
Any idea what is the difference  "cgroup.procs" entry and "tasks"
entry of cgroup sysfs?
both represent pid lists.
I ran:
cat /sys/fs/cgroup/cpuset/cgroup.procs
and
cat  /sys/fs/cgroup/cpuset/tasks
and entries of cgroup.procs appear in tasks.

However there are many more tasks than cgroup.procs:

cat  /sys/fs/cgroup/cpuset/cgroup.procs | wc -l
153
cat  /sys/fs/cgroup/cpuset/tasks | wc -l
383

Best
Kevin