2.6.33.5-rt23
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From: Will Schmidt on 14 Jun 2010 11:40 On Mon, 2010-06-14 at 15:34 +0200, Thomas Gleixner wrote: > On Thu, 10 Jun 2010, Will Schmidt wrote: > > > On Thu, 2010-06-10 at 08:07 +0200, Thomas Gleixner wrote: > > > On Wed, 9 Jun 2010, Will Schmidt wrote: > > > > > > > On Wed, 2010-06-09 at 18:44 +0200, Thomas Gleixner wrote: > > > > I'm still on 2.6.33.5-rt22 on powerpc, and have run into a couple > > > > "sleeping function called from invalid context..." BUGs. The first was > > > > during system boot, second during a 'make'. > > > > > > > > relevant code paths don't seem to have changed between -rt22 and -rt23, > > > > so I think still valid.. :-) > > > > > > > > This is on a POWER7 system, which may have opened up some timing > > > > windows, wrt previous runs on POWER6 systems. > > > > > > > > > > > > BUG: sleeping function called from invalid context at > > > > kernel/rtmutex.c:684 > > > > > > > [c000000078cf2cf0] [c000000000131a04] .irq_to_desc_alloc_node+0xdc/0x2b8 > > > > > > Grr. I thought I had the SPARSE_IRQ stuff disabled on -rt, but seems > > > it came back somehow. Can you disable that, or does you machine depend > > > on it ? > > > > I'm not sure whether it is required by the architecture. I do see that > > SPARSE_IRQ is disabled in arch/x86/Kconfig with a !PREEMPT_RT, but I > > don't see an equivalent 'disable' in arch/powerpc/Kconfig. > > Can you disable it ? Yeah. [root(a)foo ~]# zcat /proc/config.gz | grep SPARSE # CONFIG_SPARSE_IRQ is not set .... Thats a sample size of one (POWER7) system, but seems to have worked. Thanks, -Will > > Thanks, > > tglx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)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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