[PATCH, v10 0/3] Introduce timer slack controller

Kirill A. Shutemov
2011-10-11T16:15:41Z

From: "Kirill A. Shutemov" <kirill@shutemov.name>

Changelog:

v10 [7 month later, thanks to A Plumber's Wish List]:
- rebased to linux-next-20111011
v9:
- update documentation
- minor cleanup
v8:
- change hiearchy rules
- introduce timer_slack.effective_slack_ns
- get_task_timer_slack() -> task_get_effective_timer_slack()
- task_get_effective_timer_slack() splited in separate patch
- implement PR_GET_EFFECTIVE_TIMERSLACK
v7:
- totally reworked interface and rewritten from scratch
(See Documentation/cgroups/timer_slack.txt for more information)
v6:
- add documentation
- use notifier_call_chain() instead of check hook
- fix validate_change()
- cleanup
v5:
- -EBUSY on writing to timer_slack.min_slack_ns/max_slack_ns if a child has
wider min-max range
v4:
- hierarchy support
- drop dummy_timer_slack_check()
- workaround lockdep false (?) positive
- allow 0 as timer slack value
v3:
- rework interface
- s/EXPORT_SYMBOL/EXPORT_SYMBOL_GPL/
v2:
- fixed with CONFIG_CGROUP_TIMER_SLACK=y
v1:
- initial revision

Kirill A. Shutemov (3):
hrtimer: introduce effective timer slack
hrtimer: implement PR_GET_EFFECTIVE_TIMERSLACK
cgroups: introduce timer slack controller

Documentation/cgroups/timer_slack.txt | 72 +++++++++++++++++++
fs/select.c | 7 +--
include/linux/cgroup_subsys.h | 7 ++
include/linux/prctl.h | 6 ++
include/linux/sched.h | 10 +++
init/Kconfig | 8 ++
kernel/Makefile | 1 +
kernel/cgroup_timer_slack.c | 124 +++++++++++++++++++++++++++++++++
kernel/fork.c | 4 +
kernel/futex.c | 4 +-
kernel/hrtimer.c | 2 +-
kernel/sys.c | 3 +
12 files changed, 240 insertions(+), 8 deletions(-)
create mode 100644 Documentation/cgroups/timer_slack.txt
create mode 100644 kernel/cgroup_timer_slack.c

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1.7.6.3