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Subject[patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.18

i have released the -V0.7.18 Real-Time Preemption patch, which can be
downloaded from:

http://redhat.com/~mingo/realtime-preempt/

this release includes fixes and cleanups.

Changes between -V0.7.12 and -V0.7.18:

- merged to 2.6.10-rc1-mm3

- fixed the e1000 xmit warnings reported by Amit Shah. Same fix for tg3
too.

- added irq-latency fix from Thomas Gleixner: re-enable interrupts
before adding timings to the entropy pool.

- fixed excessive ksoftirqd overhead during outgoing TCP traffic.
ksoftirqd kept getting re-woken while it had no way to progress.

- added upstream fix from Andi Kleen for the vmalloc bug causing module
load problems/crashes. Added ipc/shm fix too.

Changes between -V0.7.1 and -V0.7.12:

- big source level cleanups: completely rearranged the mutex type
definitions and source files, to make it reflect the code. Made
all locking objects based on a new, central lock type: struct
rt_mutex. This type is never exposed externally, it is internal to
the RT code. Unified all the RT locking code in kernel/rt.c, this
also simplified and sped things up. Undid collateral damage to the
generic rwsem code - it is now untouched and independent of the RT
code.

- rearranged the way spinlocks interact with the RT code and cleaned
up the RT spinlock definitions. Found and fixed a bug in the process:
rwlocks were dropping the BKL upon contention.

- small x86 speedup: call __schedule not preempt_schedule_irq from
work_resched.

- ported PREEMPT_RT to x64. This resulted in the generalization of some
of the x86 changes.

- hopefully fixed fbcon kernel logging

- hacked reiser4 to make it work on PREEMPT_REALTIME.

- dropped the swap-layout-improvements patch. While it was working fine
it's not necessary for latencies anymore under the PREEMPT_REALTIME
approach, and the swap-patch was getting intrusive.

- fixed preemption-bug in drain_cpu_caches() on SMP [bug introduced by
PREEMPT_REALTIME]

- new attempt at getting rid of the networking related deadlocks

- selinux deadlock fix and RCU-code conversion to RT semantics

to create a -V0.7.18 tree from scratch, the patching order is:

http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.9.tar.bz2
http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.10-rc1.bz2
http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.10-rc1/2.6.10-rc1-mm3/2.6.10-rc1-mm3.bz2
http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.10-rc1-mm3-V0.7.18

Ingo
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