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Groups > linux.kernel > #1414727

[PATCH v4 0/5] sched/fair: Fix attach and detach sched avgs for task group change or sched class change

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Hi Peter,

It seems the problem is worse, the attach twice issue can happen not only as
Vincent raised when task moves between groups, but also when switching to fair
class. In addition, for newly forked task, the detach and attach also have
problems.

Thanks a lot to Vincent. This new version mainly addresses his comments to
reword the description of the problem.

Thanks,
Yuyang

--

Yuyang Du (5):
  sched/fair: Clean up attach_entity_load_avg()
  sched/fair: Fix attaching task sched avgs twice when switching to
    fair or changing task group
  sched/fair: Skip detach sched avgs for new task when changing task
    groups
  sched/fair: Move load and util avgs from wake_up_new_task() to
    sched_fork()
  sched/fair: Add inline to detach_entity_load_evg()

 kernel/sched/auto_group.c |    2 +-
 kernel/sched/core.c       |   13 ++++----
 kernel/sched/fair.c       |   76 ++++++++++++++++++++-------------------------
 kernel/sched/sched.h      |    6 ++--
 4 files changed, 45 insertions(+), 52 deletions(-)

-- 
1.7.9.5

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[PATCH v4 0/5] sched/fair: Fix attach and detach sched avgs for task group change or sched class change Yuyang Du <yuyang.du@intel.com> - 2016-06-06 10:20 +0200
  [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice when switching to fair or changing task group Yuyang Du <yuyang.du@intel.com> - 2016-06-06 10:20 +0200
    Re: [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice  when switching to fair or changing task group Peter Zijlstra <peterz@infradead.org> - 2016-06-06 12:00 +0200
      Re: [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice  when switching to fair or changing task group Yuyang Du <yuyang.du@intel.com> - 2016-06-07 05:40 +0200
    Re: [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice  when switching to fair or changing task group Vincent Guittot <vincent.guittot@linaro.org> - 2016-06-06 14:40 +0200
      Re: [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice  when switching to fair or changing task group Yuyang Du <yuyang.du@intel.com> - 2016-06-07 05:10 +0200
        Re: [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice  when switching to fair or changing task group Vincent Guittot <vincent.guittot@linaro.org> - 2016-06-07 10:10 +0200
          Re: [PATCH v4 2/5] sched/fair: Fix attaching task sched avgs twice  when switching to fair or changing task group Yuyang Du <yuyang.du@intel.com> - 2016-06-08 04:20 +0200
  [PATCH v4 5/5] sched/fair: Add inline to detach_entity_load_evg() Yuyang Du <yuyang.du@intel.com> - 2016-06-06 10:20 +0200
  [PATCH v4 4/5] sched/fair: Move load and util avgs from wake_up_new_task() to sched_fork() Yuyang Du <yuyang.du@intel.com> - 2016-06-06 10:20 +0200
  [PATCH v4 1/5] sched/fair: Clean up attach_entity_load_avg() Yuyang Du <yuyang.du@intel.com> - 2016-06-06 10:20 +0200
    Re: [PATCH v4 1/5] sched/fair: Clean up attach_entity_load_avg() Matt Fleming <matt@codeblueprint.co.uk> - 2016-06-06 15:40 +0200
      Re: [PATCH v4 1/5] sched/fair: Clean up attach_entity_load_avg() Vincent Guittot <vincent.guittot@linaro.org> - 2016-06-06 15:50 +0200
        Re: [PATCH v4 1/5] sched/fair: Clean up attach_entity_load_avg() Matt Fleming <matt@codeblueprint.co.uk> - 2016-06-06 16:10 +0200
        Re: [PATCH v4 1/5] sched/fair: Clean up attach_entity_load_avg() Peter Zijlstra <peterz@infradead.org> - 2016-06-06 16:30 +0200

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