[GIT PULL] rt: Port of Lai Jiangshan's rt patch

Thomas,

I finally got Lai's patch to a point that I'm happy with it.
The first 4 patches are clean ups to help in applying Lai's patch
at the end.

I've tested this patch series by running dbench 100 in a loop
and it crashes as much as mainline 2.6.33 does ;-) so I'm pretty
happy with it.

The following patches are in:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-rt.git

    branch: rt/tip/rt/devel


Lai Jiangshan (1):
      rtmutex: Ensure only the top waiter or higher priority task can take the lock

Steven Rostedt (4):
      rtmutex: Only save lock depth once in spin_slowlock
      rtmutex: Try to take lock early in rt_spin_lock_slowlock()
      rtmutex: Revert Optimize rt lock wakeup
      rtmutex: Fix comment about why new_owner can be NULL in wake_futex_pi()

----
 kernel/futex.c          |   20 +-
 kernel/rt.c             |   10 +-
 kernel/rtmutex-debug.c  |    1 -
 kernel/rtmutex.c        |  478 ++++++++++++++++++-----------------------------
 kernel/rtmutex_common.h |   18 +--
 5 files changed, 204 insertions(+), 323 deletions(-)

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