[Xen-devel] Diagnose stuff

[Juergen Gross <juergen.gross@xxxxxxxxxxxxxxxxxxx>]

Hi,

while implementing cpupool support in XEN I had to track down some issues
with deadlocks. Is there any interest in patches for the following?

- compile time switchable spinlock timeout detection

- printout of state of ALL cpus to console in case of hypervisor crash

- some enhancements in lock handling to reduce (potential) latency:
  Today in *lock_irq and *lock_irqsave interrupts are disabled and then
  spinning is started. If the lock is not obtained, enabling and disabling of
  IRQs in the spinloop would block IRQs as short as possible.


Juergen

-- 
Juergen Gross                             Principal Developer
IP SW OS6                      Telephone: +49 (0) 89 636 47950
Fujitsu Siemens Computers         e-mail: juergen.gross@xxxxxxxxxxxxxxxxxxx
Otto-Hahn-Ring 6                Internet: www.fujitsu-siemens.com
D-81739 Muenchen         Company details: www.fujitsu-siemens.com/imprint.html

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