[patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U2

[Ingo Molnar]

i have released the -U2 PREEMPT_REALTIME patch:

  http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-U2

this too is a bugfixes-only release, and it is still experimental code.

Changes since -U1:

 - bugfix: fix page_lock_anon_vma() crash reported by Adam Heath and 
   Lorenzo Allegrucci.

 - bugfix: fix selinux atomic-schedule warning messages, reported by
   Mark H Johnson.

 - bugfix: ip_tables atomic-schedule fix, fixes the messages reported by 
   Daniel Walker and K.R. Foley.

 - bugfix: fix warnings/deadlocks in inet_create(), reported by Mark H 
   Johnson.

 - bugfix: fixed a crash-in-shmfs-during-heavy-swapout bug

 - bugfix: enable preemption while doing mmdrop() in the scheduler - it 
   may schedule.

 - debugging feature: when PREEMPT_TIMING is enabled then the code also 
   keeps a trace/stack of preemption enabler EIPs. (if LATENCY_TRACE is 
   enabled as well then the parent EIP is recorded as well.) Whenever a 
   stack trace due to atomicity violations is printed, the preemption
   stack is printed as well. This makes it much easier to identify the 
   place that did the illegal preemption-disabling.

to create a -U2 tree from scratch the patching order is:

   http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
 + http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc4.bz2
 + http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc4/2.6.9-rc4-mm1/2.6.9-rc4-mm1.bz2
 + http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-U2

	Ingo
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