Re: [ANNOUNCE] 2.6.31-rt11

Clark Williams
2009-09-22T19:01:13Z

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On Tue, 22 Sep 2009 11:31:51 -0700
Darren Hart <dvhltc@us.ibm.com> wrote:

> Thomas Gleixner wrote:
> > We are pleased to announce the next update to our new preempt-rt
> > series.
> >
> > - latencytop fix
> >
> > - disable SPARSE_IRQ, DMAR, IRQ_REMAP for -rt
> >
> > Known issues:
> > - ARM highmem
> > - scheduler load balancing oddities. Peter is working on it.
> > - timer_interrupt hang check (still working on somthing useful)
> >
> > The planned "add back MIPS support" is postponed to rt12.
> >
> > Download locations:
> >
> > http://rt.et.redhat.com/download/
> > http://www.kernel.org/pub/linux/kernel/projects/rt/
> >
> > Git release branch:
> > git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31
> >
> > Git development branch:
> > git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head
> >
> > Gitweb:
> > http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31
> >
> > Information on the RT patch can be found at:
> >
> > http://rt.wiki.kernel.org/index.php/Main_Page
> >
> > to build the 2.6.31-rt11 tree, the following patches should be
> > applied:
> >
> > http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.tar.bz2
> > http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rt11.bz2
> >
> > Enjoy !
> >
> > tglx
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>
> Hitting a repeating BUG at boot on my Thinkpad T60p:
>
> [ 2.861699] BUG: sleeping function called from invalid context at
> kernel/rtmutex.c:684
> [ 2.861839] in_atomic(): 1, irqs_disabled(): 0, pid: 777, name: sleep
> [ 2.861967] Pid: 777, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
> [ 2.862092] Call Trace:
> [ 2.862217] [<c012d881>] __might_sleep+0xe1/0x100
> [ 2.862343] [<c056ccba>] rt_spin_lock+0x2a/0x70
> [ 2.862468] [<c018243a>] res_counter_uncharge+0x2a/0x50
> [ 2.862593] [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
> [ 2.862720] [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
> [ 2.862845] [<c01d6b87>] page_remove_rmap+0x47/0x50
> [ 2.862969] [<c01cf2d9>] unmap_vmas+0x349/0x6b0
> [ 2.863093] [<c01d45e5>] exit_mmap+0xc5/0x1c0
> [ 2.863217] [<c0140481>] mmput+0x51/0xc0
> [ 2.863339] [<c0146465>] exit_mm+0x105/0x140
> [ 2.863462] [<c01465b5>] do_exit+0x115/0x760
> [ 2.863584] [<c0146cc4>] sys_exit+0x14/0x20
> [ 2.863707] [<c0103025>] syscall_call+0x7/0xb
>
> I'm looking for a problem with preempt_disable() between LinuxCon
> seesions now. But if someone already knows the problem, thought I'd post.
>
> Thanks,

I saw that (or something very similar) on my T60 a couple of versions
back but thought it got fixed. Send me your .config, will you?

Clark

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