Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0

[K.R. Foley]

Ingo Molnar wrote:

> [ NOTE: there's one known bug in this release: selinux on one of my
> testsystems broke, it hangs during bootup. With CONFIG_SECURITY disabled
> it works fine. I'm working on the fix. So please keep CONFIG_SECURITY
> disabled for the time being. ]
Does this include all models of security or just the selinux stuff?


> other changes in -V0:
>
>  - build fixes: more driver fixes from Thomas Gleixner
>
>  - crash fix: fixed a bug found by Thomas Gleixner: rwsem runtime
>    initialization was racy.
>
>  - deadlock fix: fixed lockup bug caused by __schedule clearing
>    PREEMPT_ACTIVE. The need_resched loop is now outside of __schedule(). 
>    This might solve lockups/slowdowns reported by some people.
>
>  - latency fix: made keventd SCHED_FIFO - this could fix the mouse
>    related delays reported by a number of people.
>
>  - latency fix: fixed SMP lock-break mechanism of mutexes.
>
>  - usability feature: hard-interrupts get decreasing SCHED_FIFO priority
>    starting at prio 49 and stopping at prio 25. This should give a good
>    default.
>
>  - debug feature: implemented SysRq-D to show the list of tasks with
>    locks blocked on, if RW_SEM_DEADLOCK_DETECTION is enabled.
>
> to create a -V0 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/people/akpm/patches/2.6/2.6.9/2.6.9-mm1/2.6.9-mm1.bz2
>  + http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.9-mm1-V0
>
> 	Ingo


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