[PATCH 0/2 v2] x86, reboot: cleanup NMI and REBOOT_IRQ

[Don Zickus]

After dealing with pstore conversations about spin locks, I had an idea
to simplify the native_smp_stop_other_cpus() path by using both REBOOT_IRQ
and NMI instead of using either or.

I also cleaned up a WARN_ON splat from rescheduling.

Tested 10 panics on my core2 quad using 'echo c > /proc/sysrq-trigger' and
panic=10 on the commandline.  The machine panic'd and rebooted succesfully
all 10 times.  Though only the first time did I see the WARN_ON splat, the
other 9 times I couldn't duplicate it.

Don Zickus (2):
  x86, reboot: revert stop_other_cpus to using IRQ with NMI fallback
  x86, reschedule: check to see if system is shutting down

 arch/x86/kernel/smp.c |  103 +++++++++++++++++++++++--------------------------
 1 files changed, 48 insertions(+), 55 deletions(-)

-- 
1.7.7.6

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