Messages in this thread | | | Date | Wed, 24 Nov 2004 13:28:35 +0100 | From | Ingo Molnar <> | Subject | [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-2 |
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* Ingo Molnar <mingo@elte.hu> wrote:
> > Yup, !PREEMPT works fine. Testing PREEMPT next. So far only > > PREEMPT_VOLUNTARY fails to boot. > > found a bug that causes !PREEMPT boot failures. The seqlock type was > wrong for the !RT case, resulting in a subtle bug: > write_seqlock_irqsave() didnt actually disable interrupts. This > results in a deadlock scenario in where the timer interrupt interrupts > update_times (which runs in softirq context). I've uploaded the -31-1 > patch with this fix included to the usual place: > > http://redhat.com/~mingo/realtime-preempt/ > > i'm cycling through the various options, but it's looking good so far, > PREEMPT_NONE, PREEMPT_VOLUNTARY and PREEMPT_DESKTOP all booted up > fine.
all variations i tried booted up fine. While fixing the non-RT cases a bug slipped into the PREEMPT_RT branch of seqlock.h though, i fixed that in the -31-2 patch i just uploaded.
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