Merge commit 'v2.6.32.29' into xen/next-2.6.32
* commit 'v2.6.32.29': (116 commits)
Linux 2.6.32.29
kernel/user.c: add lock release annotation on free_user()
sched: Remove some dead code
sched: Fix wake_affine() vs RT tasks
sched: Fix idle balancing
sched: Fix volanomark performance regression
sched: Fix cross-sched-class wakeup preemption
sched: Use group weight, idle cpu metrics to fix imbalances during idle
sched, cgroup: Fixup broken cgroup movement
sched: Export account_system_vtime()
sched: Call tick_check_idle before __irq_enter
sched: Remove irq time from available CPU power
sched: Do not account irq time to current task
x86: Add IRQ_TIME_ACCOUNTING
sched: Add IRQ_TIME_ACCOUNTING, finer accounting of irq time
sched: Add a PF flag for ksoftirqd identification
sched: Remove unused PF_ALIGNWARN flag
sched: Consolidate account_system_vtime extern declaration
sched: Fix softirq time accounting
sched: Drop group_capacity to 1 only if local group has extra capacity
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