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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-21 17:51:34 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-21 17:51:34 -0800 |
commit | f075e0f6993f41c72dbb1d3e7a2d7740f14e89e2 (patch) | |
tree | a25b464a67fffc6f43940e0e85e2735a48bb1ad7 /Documentation | |
parent | 5cb7398caf69e3943df78435a19a8a77fe8b9463 (diff) | |
parent | dd4b0a4676907481256d16d5de0851b315a6f22c (diff) | |
download | op-kernel-dev-f075e0f6993f41c72dbb1d3e7a2d7740f14e89e2.zip op-kernel-dev-f075e0f6993f41c72dbb1d3e7a2d7740f14e89e2.tar.gz |
Merge branch 'for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
"The bulk of changes are cleanups and preparations for the upcoming
kernfs conversion.
- cgroup_event mechanism which is and will be used only by memcg is
moved to memcg.
- pidlist handling is updated so that it can be served by seq_file.
Also, the list is not sorted if sane_behavior. cgroup
documentation explicitly states that the file is not sorted but it
has been for quite some time.
- All cgroup file handling now happens on top of seq_file. This is
to prepare for kernfs conversion. In addition, all operations are
restructured so that they map 1-1 to kernfs operations.
- Other cleanups and low-pri fixes"
* 'for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (40 commits)
cgroup: trivial style updates
cgroup: remove stray references to css_id
doc: cgroups: Fix typo in doc/cgroups
cgroup: fix fail path in cgroup_load_subsys()
cgroup: fix missing unlock on error in cgroup_load_subsys()
cgroup: remove for_each_root_subsys()
cgroup: implement for_each_css()
cgroup: factor out cgroup_subsys_state creation into create_css()
cgroup: combine css handling loops in cgroup_create()
cgroup: reorder operations in cgroup_create()
cgroup: make for_each_subsys() useable under cgroup_root_mutex
cgroup: css iterations and css_from_dir() are safe under cgroup_mutex
cgroup: unify pidlist and other file handling
cgroup: replace cftype->read_seq_string() with cftype->seq_show()
cgroup: attach cgroup_open_file to all cgroup files
cgroup: generalize cgroup_pidlist_open_file
cgroup: unify read path so that seq_file is always used
cgroup: unify cgroup_write_X64() and cgroup_write_string()
cgroup: remove cftype->read(), ->read_map() and ->write()
hugetlb_cgroup: convert away from cftype->read()
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/cgroups/cgroups.txt | 20 | ||||
-rw-r--r-- | Documentation/cgroups/memory.txt | 4 | ||||
-rw-r--r-- | Documentation/cgroups/resource_counter.txt | 4 |
3 files changed, 4 insertions, 24 deletions
diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt index 638bf17..821de56 100644 --- a/Documentation/cgroups/cgroups.txt +++ b/Documentation/cgroups/cgroups.txt @@ -24,7 +24,6 @@ CONTENTS: 2.1 Basic Usage 2.2 Attaching processes 2.3 Mounting hierarchies by name - 2.4 Notification API 3. Kernel API 3.1 Overview 3.2 Synchronization @@ -472,25 +471,6 @@ you give a subsystem a name. The name of the subsystem appears as part of the hierarchy description in /proc/mounts and /proc/<pid>/cgroups. -2.4 Notification API --------------------- - -There is mechanism which allows to get notifications about changing -status of a cgroup. - -To register a new notification handler you need to: - - create a file descriptor for event notification using eventfd(2); - - open a control file to be monitored (e.g. memory.usage_in_bytes); - - write "<event_fd> <control_fd> <args>" to cgroup.event_control. - Interpretation of args is defined by control file implementation; - -eventfd will be woken up by control file implementation or when the -cgroup is removed. - -To unregister a notification handler just close eventfd. - -NOTE: Support of notifications should be implemented for the control -file. See documentation for the subsystem. 3. Kernel API ============= diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index e2bc132..2622115 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -577,7 +577,7 @@ Each memcg's numa_stat file includes "total", "file", "anon" and "unevictable" per-node page counts including "hierarchical_<counter>" which sums up all hierarchical children's values in addition to the memcg's own value. -The ouput format of memory.numa_stat is: +The output format of memory.numa_stat is: total=<total pages> N0=<node 0 pages> N1=<node 1 pages> ... file=<total file pages> N0=<node 0 pages> N1=<node 1 pages> ... @@ -670,7 +670,7 @@ page tables. 8.1 Interface -This feature is disabled by default. It can be enabledi (and disabled again) by +This feature is disabled by default. It can be enabled (and disabled again) by writing to memory.move_charge_at_immigrate of the destination cgroup. If you want to enable it: diff --git a/Documentation/cgroups/resource_counter.txt b/Documentation/cgroups/resource_counter.txt index c4d99ed..52e1da1 100644 --- a/Documentation/cgroups/resource_counter.txt +++ b/Documentation/cgroups/resource_counter.txt @@ -97,8 +97,8 @@ to work with it. (struct res_counter *rc, struct res_counter *top, unsinged long val) - Almost same as res_cunter_uncharge() but propagation of uncharge - stops when rc == top. This is useful when kill a res_coutner in + Almost same as res_counter_uncharge() but propagation of uncharge + stops when rc == top. This is useful when kill a res_counter in child cgroup. 2.1 Other accounting routines |