Messages in this thread | | | Date | Mon, 9 May 2005 14:13:24 +0200 | From | Ingo Molnar <> | Subject | Re: Real-Time Preemption: Magic Sysrq p doesn't work |
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* kus Kusche Klaus <kus@keba.com> wrote:
> While testing, I noticed that Sysrq p is silently ignored on current > RT kernels with RT preemption: The syslog contains a message that > Sysrq p was pressed, but no registers are printed.
yes, that's because the keyboard interrupt is 'threaded' - hence there's no 'interrupted stack' to print a backtrace of. You should be able to see all (including currently running) task's backtraces in SysRq-T output.
are you trying to use it to debug a particular bug?
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