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    SubjectRe: [ANNOUNCE] 2.6.31-rt11
    Darren Hart 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
    >>
    >> --
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    >> 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.
    >

    Ugh, nevermind, this was an -rc4 kernel. 2.6.31-rt11 does not see this
    problem.


    --
    Darren Hart
    IBM Linux Technology Center
    Real-Time Linux Team


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