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| author |   Rami Rosen <ramirose@gmail.com> | 2013-04-10 14:41:17 +0300 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2013-04-10 10:46:59 -0700 |
| commit | 84cfb6ab484b442d5115eb3baf9db7d74a3ea626 (patch) | |
| tree | 3a3d52372b7b6f0e42662103baa8f0ef24789bf2 /Documentation/cgroups | |
| parent | devcg: remove broken_hierarchy tag (diff) | |
| download | linux-dev-84cfb6ab484b442d5115eb3baf9db7d74a3ea626.tar.xz linux-dev-84cfb6ab484b442d5115eb3baf9db7d74a3ea626.zip | |
cgroup: remove bind() method from cgroup_subsys.
The bind() method of cgroup_subsys is not used in any of the
controllers (cpuset, freezer, blkio, net_cls, memcg, net_prio,
devices, perf, hugetlb, cpu and cpuacct)
tj: Removed the entry on ->bind() from
Documentation/cgroups/cgroups.txt. Also updated a couple
paragraphs which were suggesting that dynamic re-binding may be
implemented. It's not gonna.
Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/cgroups')
| -rw-r--r-- | Documentation/cgroups/cgroups.txt | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt index 638bf17ff869..2b51e12ce178 100644 --- a/Documentation/cgroups/cgroups.txt +++ b/Documentation/cgroups/cgroups.txt @@ -211,10 +211,9 @@ matches, and any of the requested subsystems are in use in an existing hierarchy, the mount will fail with -EBUSY. Otherwise, a new hierarchy is activated, associated with the requested subsystems. -It's not currently possible to bind a new subsystem to an active -cgroup hierarchy, or to unbind a subsystem from an active cgroup -hierarchy. This may be possible in future, but is fraught with nasty -error-recovery issues. +It's not possible to bind a new subsystem to an active cgroup +hierarchy, or to unbind a subsystem from an active cgroup +hierarchy. When a cgroup filesystem is unmounted, if there are any child cgroups created below the top-level cgroup, that hierarchy @@ -382,10 +381,8 @@ To Specify a hierarchy's release_agent: Note that specifying 'release_agent' more than once will return failure. -Note that changing the set of subsystems is currently only supported -when the hierarchy consists of a single (root) cgroup. Supporting -the ability to arbitrarily bind/unbind subsystems from an existing -cgroup hierarchy is intended to be implemented in the future. +Note that changing the set of subsystems is only supported when the +hierarchy consists of a single (root) cgroup. Then under /sys/fs/cgroup/rg1 you can find a tree that corresponds to the tree of the cgroups in the system. For instance, /sys/fs/cgroup/rg1 @@ -643,13 +640,6 @@ void exit(struct task_struct *task) Called during task exit. -void bind(struct cgroup *root) -(cgroup_mutex held by caller) - -Called when a cgroup subsystem is rebound to a different hierarchy -and root cgroup. Currently this will only involve movement between -the default hierarchy (which never has sub-cgroups) and a hierarchy -that is being created/destroyed (and hence has no sub-cgroups). 4. Extended attribute usage =========================== |