linux-stable.git/Documentation/cgroups/cgroups.txt, branch v3.9

cgroup, cpuset: remove cgroup_subsys->post_clone()

2012-11-19T16:13:39+00:00

Currently CGRP_CPUSET_CLONE_CHILDREN triggers ->post_clone().  Now
that clone_children is cpuset specific, there's no reason to have this
rather odd option activation mechanism in cgroup core.  cpuset can
check the flag from its ->css_allocate() and take the necessary
action.

Move cpuset_post_clone() logic to the end of cpuset_css_alloc() and
remove cgroup_subsys->post_clone().

Loosely based on Glauber's "generalize post_clone into post_create"
patch.

Signed-off-by: Tejun Heo 
Original-patch-by: Glauber Costa 
Original-patch: <1351686554-22592-2-git-send-email-glommer@parallels.com>
Acked-by: Serge E. Hallyn 
Acked-by: Li Zefan 
Cc: Glauber Costa

cgroup: s/CGRP_CLONE_CHILDREN/CGRP_CPUSET_CLONE_CHILDREN/

2012-11-19T16:13:38+00:00

clone_children is only meaningful for cpuset and will stay that way.
Rename the flag to reflect that and update documentation.  Also, drop
clone_children() wrapper in cgroup.c.  The thin wrapper is used only a
few times and one of them will go away soon.

Signed-off-by: Tejun Heo 
Acked-by: Serge E. Hallyn 
Acked-by: Li Zefan 
Cc: Glauber Costa

cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()

2012-11-19T16:13:38+00:00

Rename cgroup_subsys css lifetime related callbacks to better describe
what their roles are.  Also, update documentation.

Signed-off-by: Tejun Heo 
Acked-by: Li Zefan

cgroup: trivial fixes for Documentation/cgroups/cgroups.txt

2012-09-13T18:10:54+00:00

While reading through Documentation/cgroups/cgroups.txt, I found a
number of minor wordos and typos. The patch below is a conservative
handling of some of these: it provides just a number of "obviously
correct" fixes to the English that improve the readability
of the document somewhat. Obviously some more significant
fixes could be made to the document, but some of those
may not be in the "obviously correct" category.

Signed-off-by: Michael Kerrisk 
Signed-off-by: Tejun Heo

cgroup: add documentation on extended attributes usage

2012-09-12T18:39:50+00:00

v2: update cgroups.txt instead of creating a new file

Cc: Tejun Heo 
Cc: Hugh Dickins 
Cc: Hillf Danton 
Cc: Lennart Poettering 
Acked-by: Li Zefan 
Signed-off-by: Aristeu Rozanski 
Signed-off-by: Tejun Heo

cgroup: Update remount documentation

2012-07-17T18:10:52+00:00

Remounting support will be removed in the future (see
feature-removal-schedule.txt).  Discourage users from using it.

Signed-off-by: Daniel Wagner 
Signed-off-by: Tejun Heo 
Cc: Rob Landley 
Cc: Paul Menage 
Cc: Li Zefan 
Cc: Frederic Weisbecker 
Cc: KAMEZAWA Hiroyuki

cgroup: Remove populate() documentation

2012-07-09T16:56:23+00:00

This function was removed by 86f82d561864e902c70282b6f17cf590c0f34691.

Signed-off-by: Daniel Wagner 
Signed-off-by: Tejun Heo 
Cc: Rob Landley 
Cc: Paul Menage 
Cc: Li Zefan 
Cc: Frederic Weisbecker 
Cc: KAMEZAWA Hiroyuki

cgroup: remove hierarchy_mutex

2012-06-07T02:12:30+00:00

It was introduced for memcg to iterate cgroup hierarchy without
holding cgroup_mutex, but soon after that it was replaced with
a lockless way in memcg.

No one used hierarchy_mutex since that, so remove it.

Signed-off-by: Li Zefan 
Signed-off-by: Tejun Heo

cgroup: remove cgroup_subsys argument from callbacks

2012-02-02T17:20:22+00:00

The argument is not used at all, and it's not necessary, because
a specific callback handler of course knows which subsys it
belongs to.

Now only ->pupulate() takes this argument, because the handlers of
this callback always call cgroup_add_file()/cgroup_add_files().

So we reduce a few lines of code, though the shrinking of object size
is minimal.

 16 files changed, 113 insertions(+), 162 deletions(-)

   text    data     bss     dec     hex filename
5486240  656987 7039960 13183187         c928d3 vmlinux.o.orig
5486170  656987 7039960 13183117         c9288d vmlinux.o

Signed-off-by: Li Zefan 
Signed-off-by: Tejun Heo

cgroup: kill subsys->can_attach_task(), pre_attach() and attach_task()

2011-12-13T02:12:22+00:00

These three methods are no longer used.  Kill them.

Signed-off-by: Tejun Heo 
Reviewed-by: KAMEZAWA Hiroyuki 
Reviewed-by: Frederic Weisbecker 
Acked-by: Paul Menage 
Cc: Li Zefan