lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

cgroups: documentation updates

Browse Source 
- remove 'releasable' since it has been moved to the debug subsys.
- update lock requirements of subsys callbacks.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Li Zefan
2009-01-07 18:07:32 -08:00
committed by Linus Torvalds
parent 5cdc38f985
commit 18e7f1f0d3
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/cgroups/cgroups.txt
View File

@@ -227,7 +227,6 @@ Each cgroup is represented by a directory in the cgroup file system
containing the following files describing that cgroup: containing the following files describing that cgroup:
- tasks: list of tasks (by pid) attached to that cgroup - tasks: list of tasks (by pid) attached to that cgroup
- releasable flag: cgroup currently removeable?
- notify_on_release flag: run the release agent on exit? - notify_on_release flag: run the release agent on exit?
- release_agent: the path to use for release notifications (this file - release_agent: the path to use for release notifications (this file
exists in the top cgroup only) exists in the top cgroup only)
@@ -360,7 +359,7 @@ Now you want to do something with this cgroup.
In this directory you can find several files: In this directory you can find several files:
# ls # ls
notify_on_release releasable tasks notify_on_release tasks
(plus whatever files added by the attached subsystems) (plus whatever files added by the attached subsystems)
Now attach your shell to this cgroup: Now attach your shell to this cgroup:
@@ -479,7 +478,6 @@ newly-created cgroup if an error occurs after this subsystem's
create() method has been called for the new cgroup). create() method has been called for the new cgroup).
void pre_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp); void pre_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp);
(cgroup_mutex held by caller)
Called before checking the reference count on each subsystem. This may Called before checking the reference count on each subsystem. This may
be useful for subsystems which have some extra references even if be useful for subsystems which have some extra references even if
@@ -498,6 +496,7 @@ remain valid while the caller holds cgroup_mutex.
void attach(struct cgroup_subsys *ss, struct cgroup *cgrp, void attach(struct cgroup_subsys *ss, struct cgroup *cgrp,
struct cgroup *old_cgrp, struct task_struct *task) struct cgroup *old_cgrp, struct task_struct *task)
(cgroup_mutex held by caller)
Called after the task has been attached to the cgroup, to allow any Called after the task has been attached to the cgroup, to allow any
post-attachment activity that requires memory allocations or blocking. post-attachment activity that requires memory allocations or blocking.
@@ -511,6 +510,7 @@ void exit(struct cgroup_subsys *ss, struct task_struct *task)
Called during task exit. Called during task exit.
int populate(struct cgroup_subsys *ss, struct cgroup *cgrp) int populate(struct cgroup_subsys *ss, struct cgroup *cgrp)
(cgroup_mutex held by caller)
Called after creation of a cgroup to allow a subsystem to populate Called after creation of a cgroup to allow a subsystem to populate
the cgroup directory with file entries. The subsystem should make the cgroup directory with file entries. The subsystem should make
@@ -520,6 +520,7 @@ method can return an error code, the error code is currently not
always handled well. always handled well.
void post_clone(struct cgroup_subsys *ss, struct cgroup *cgrp) void post_clone(struct cgroup_subsys *ss, struct cgroup *cgrp)
(cgroup_mutex held by caller)
Called at the end of cgroup_clone() to do any paramater Called at the end of cgroup_clone() to do any paramater
initialization which might be required before a task could attach. For initialization which might be required before a task could attach. For