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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.21
Ingo Molnar wrote:

>i have released the -V0.7.21 Real-Time Preemption patch, which can be
>downloaded from the usual place:
>this release includes fixes and debugging-improvements.
>Changes since -V0.7.20:
> - reverted the modlist_lock change - it caused more problems than it
> solved.
> - implemented irqs-off critical section timing/tracing, inspired by the
> positive results Thomas Gleixner got with a different kind of cli/sti
> tracer. To activate it, enable CONFIG_CRITICAL_TIMING and
> CONFIG_CRITICAL_IRQSOFF_TIMING and cli/sti latencies will be reported
> 'integrated' into the preempt on/off latencies.
> - sped up tracing in a number of ways. Performance of the tracer slowly
> eroded in the past week or two, it needed alignment and size fixes ,
> inlining/branch-prediction updates and i got rid of unnecessary code.
> The max latency is now traced in cycles - this got rid of an
> expensive 64-bit division in the fastpath. (the /proc/sys tunables
> are still in usecs so userspace should not notice anything.) It's
> still not cheap but roughly 5 times faster than -V0.7.20's tracer, on
> a fast desktop box.
> - renamed CONFIG_PREEMPT_REALTIME to CONFIG_PREEMPT_RT - it's shorter.
> introduced CONFIG_CRITICAL_IRQSOFF_TIMING to enable cli/sti timing.
>to create a -V0.7.21 tree from scratch, the patching order is:
> Ingo
When trying to patch my kernel i get following notice:
patching file include/linux/highmem.h
patch unexpectedly ends in middle of line
patch: **** unexpected end of file in patch
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