----- "Tejun Heo" <tj@kernel.org> wrote:

quoted text
> Hello,
> 
> On 08/30/2010 05:42 AM, CAI Qian wrote:
> >> Hmmm... I can't reproduce it here.  I wonder what the difference
> is.
> >> Can you please trigger sysrq-t after the boot is hung and post the
> >> result?
> > Sysrq keys did not work at this early stage of booting for me even
> > adding sysrq_always_enabled.
> 
> I see.  I'll prepare a debug patch which tries to catch long
> execution
> delays in workqueue but in the meantime can you please turn on
> hangcheck timer and see whether it triggers after the kernel hangs
> during boot?
Can't see any difference with hangcheck timer enabled.
quoted text
> Thanks.
> 
> -- 
> tejun
> 
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