Messages in this thread | | | Date | Mon, 08 Nov 2004 18:41:25 +0100 | From | Gunther Persoons <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.21 |
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Ingo Molnar wrote:
>i have released the -V0.7.21 Real-Time Preemption patch, which can be >downloaded from the usual place: > > http://redhat.com/~mingo/realtime-preempt/ > >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. > > - renamed CONFIG_PREEMPT_TIMING to CONFIG_CRITICAL_TIMING and > introduced CONFIG_CRITICAL_IRQSOFF_TIMING to enable cli/sti timing. > >to create a -V0.7.21 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-V0.7.21 > > 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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