Messages in this thread | | | Date | Sat, 6 Nov 2004 16:57:20 +0100 | From | Ingo Molnar <> | Subject | [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.18 |
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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
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