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authorTejun Heo <tj@kernel.org>2015-09-18 11:56:28 -0400
committerTejun Heo <tj@kernel.org>2015-09-18 11:56:28 -0400
commit9e10a130d9b62af976d17d120c95f3650769312c (patch)
tree2a580955a56434f6e7c455a8f0ebf6eec71a9194 /sound/drivers
parentfc5ed1e95410ad73b2ab8f33cd90eb3bcf6c98a1 (diff)
downloadlinux-9e10a130d9b62af976d17d120c95f3650769312c.tar.bz2
cgroup: replace cgroup_on_dfl() tests in controllers with cgroup_subsys_on_dfl()
cgroup_on_dfl() tests whether the cgroup's root is the default hierarchy; however, an individual controller is only interested in whether the controller is attached to the default hierarchy and never tests a cgroup which doesn't belong to the hierarchy that the controller is attached to. This patch replaces cgroup_on_dfl() tests in controllers with faster static_key based cgroup_subsys_on_dfl(). This leaves cgroup core as the only user of cgroup_on_dfl() and the function is moved from the header file to cgroup.c. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Zefan Li <lizefan@huawei.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org>
Diffstat (limited to 'sound/drivers')
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