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

From: Ingo Molnar (mingo_at_elte.hu)
Date: 11/06/04

  • Next message: Chad Christopher Giffin: "Lost versioning from last build -- How to recover?" 
    Date:	Sat, 6 Nov 2004 16:57:20 +0100
To: linux-kernel@vger.kernel.org

    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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  • Next message: Chad Christopher Giffin: "Lost versioning from last build -- How to recover?"

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