kernel_optimize_test/kernel/cgroup
Roman Gushchin 96b9c592de cgroup: get rid of cgroup_freezer_frozen_exit()
A task should never enter the exit path with the task->frozen bit set.
Any frozen task must enter the signal handling loop and the only
way to escape is through cgroup_leave_frozen(true), which
unconditionally drops the task->frozen bit. So it means that
cgroyp_freezer_frozen_exit() has zero chances to be called and
has to be removed.

Let's put a WARN_ON_ONCE() instead of the cgroup_freezer_frozen_exit()
call to catch any potential leak of the task's frozen bit.

Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2019-05-06 08:39:11 -07:00
..
cgroup-internal.h cgroup: make TRACE_CGROUP_PATH irq-safe 2019-04-19 11:26:49 -07:00
cgroup-v1.c cgroup: implement __cgroup_task_count() helper 2019-04-19 11:26:48 -07:00
cgroup.c cgroup: get rid of cgroup_freezer_frozen_exit() 2019-05-06 08:39:11 -07:00
cpuset.c Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
debug.c cpuset: Expose cpuset.cpus.subpartitions with cgroup_debug 2018-11-08 12:27:32 -08:00
freezer.c cgroup: get rid of cgroup_freezer_frozen_exit() 2019-05-06 08:39:11 -07:00
legacy_freezer.c cgroup: rename freezer.c into legacy_freezer.c 2019-04-19 11:26:48 -07:00
Makefile cgroup: cgroup v2 freezer 2019-04-19 11:26:48 -07:00
namespace.c
pids.c cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting 2019-01-31 06:55:57 -08:00
rdma.c IB/core: Simplify rdma cgroup registration 2019-01-18 13:43:10 -07:00
rstat.c cgroup, rstat: Don't flush subtree root unless necessary 2019-02-15 11:01:31 -08:00