cgroup_freezer: introduce CGROUP_FREEZING_[SELF|PARENT]

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Introduce FREEZING_SELF and FREEZING_PARENT and make FREEZING OR of
the two flags.  This is to prepare for full hierarchy support.

freezer_apply_date() is updated such that it can handle setting and
clearing of both flags.  The two flags are also exposed to userland
via read-only files self_freezing and parent_freezing.

Other than the added cgroupfs files, this patch doesn't introduce any
behavior change.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>

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This commit is contained in:

Tejun Heo 2012-11-09 09:12:30 -08:00

parent d6a2fe1342

commit a225218060

1 changed files with 47 additions and 8 deletions

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kernel/cgroup_freezer.c

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