Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1225664

[PATCHSET] cgroup: use static_keys for subsystem enabled and on_dfl tests

Show all headers | View raw

cgroup_subsys->disabled and cgroup_on_dfl() tests are likely to be
used in hot paths and seldom change.  The former is set once during
boot and the latter only when a controller is migrated between the
default hierarchy and traditional ones.

This patchset makes these tests static_key based and contains the
following four patches.

 0001-jump_label-make-static_key_enabled-work-on-static_ke.patch
 0002-cgroup-implement-static_key-based-cgroup_subsys_enab.patch
 0003-cgroup-replace-cgroup_subsys-disabled-tests-with-cgr.patch
 0004-cgroup-replace-cgroup_on_dfl-tests-in-controllers-wi.patch

0001 is a prep patch in jump_label.  0002 adds the needed static_keys.
0003-0004 convert the existing usages and drop the old tests.

This patchset is on top of v4.3-rc1 and is availalbe in the following
git branch.

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-jump-labels

diffstat follows.  Thanks.

 block/blk-throttle.c           |    2 
 block/cfq-iosched.c            |    4 -
 include/linux/cgroup-defs.h    |    1 
 include/linux/cgroup.h         |   79 +++++++---------------------
 include/linux/hugetlb_cgroup.h |    4 -
 include/linux/jump_label.h     |   18 +++---
 include/linux/memcontrol.h     |    4 -
 kernel/cgroup.c                |  113 ++++++++++++++++++++++++++++++++++++++---
 kernel/cpuset.c                |   23 ++++----
 mm/memcontrol.c                |    4 -
 10 files changed, 157 insertions(+), 95 deletions(-)

--
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCHSET] cgroup: use static_keys for subsystem enabled and on_dfl tests Tejun Heo <tj@kernel.org> - 2015-09-16 04:00 +0200
  [PATCH 2/4] cgroup: implement static_key based cgroup_subsys_enabled() and cgroup_subsys_on_dfl() Tejun Heo <tj@kernel.org> - 2015-09-16 04:00 +0200
  [PATCH 1/4] jump_label: make static_key_enabled() work on static_key_true/false types too Tejun Heo <tj@kernel.org> - 2015-09-16 04:00 +0200
    Re: [PATCH 1/4] jump_label: make static_key_enabled() work on  static_key_true/false types too Peter Zijlstra <peterz@infradead.org> - 2015-09-17 11:10 +0200
      Re: [PATCH 1/4] jump_label: make static_key_enabled() work on  static_key_true/false types too Tejun Heo <tj@kernel.org> - 2015-09-17 17:30 +0200
        Re: [PATCH 1/4] jump_label: make static_key_enabled() work on  static_key_true/false types too Peter Zijlstra <peterz@infradead.org> - 2015-09-17 17:50 +0200
  [PATCH 3/4] cgroup: replace cgroup_subsys->disabled tests with cgroup_subsys_enabled() Tejun Heo <tj@kernel.org> - 2015-09-16 04:00 +0200
  Re: [PATCHSET] cgroup: use static_keys for subsystem enabled and  on_dfl tests Zefan Li <lizefan@huawei.com> - 2015-09-18 11:20 +0200
  Re: [PATCHSET] cgroup: use static_keys for subsystem enabled and  on_dfl tests Tejun Heo <tj@kernel.org> - 2015-09-18 18:00 +0200

csiph-web