cpu_stop: implement and use cpu_stop, take#3

Hello, Ingo.

Please pull from the following branch to receive cpu_stop patches.

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git cpu_stop

Adding mb()'s in synchronize_sched_expedited() is the only change
since the last take[2].  Both Peter and Paul have acked the patchset.
I'll post the patchset as replies to this message.

This patchset is on top of the current sched/core (99bd5e2f) and
contains the following changes.

Paul E. McKenney (1):
      scheduler: correctly place paranioa memory barriers in synchronize_sched_expedited()

Tejun Heo (4):
      cpu_stop: implement stop_cpu[s]()
      stop_machine: reimplement using cpu_stop
      scheduler: replace migration_thread with cpu_stop
      scheduler: kill paranoia check in synchronize_sched_expedited()

 Documentation/RCU/torture.txt |   10 -
 arch/s390/kernel/time.c       |    1 -
 drivers/xen/manage.c          |   14 +-
 include/linux/rcutiny.h       |    2 -
 include/linux/rcutree.h       |    1 -
 include/linux/stop_machine.h  |   59 +++--
 kernel/cpu.c                  |    8 -
 kernel/module.c               |   14 +-
 kernel/rcutorture.c           |    2 +-
 kernel/sched.c                |  284 +++++-----------------
 kernel/sched_fair.c           |   48 +++-
 kernel/stop_machine.c         |  530 +++++++++++++++++++++++++++++++----------
 12 files changed, 538 insertions(+), 435 deletions(-)

Thanks.

--
tejun

[L] http://thread.gmane.org/gmane.linux.kernel/980893
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