Linux kernel 2.6.31 on alpha.

CONFIG_DETECT_HUNG_TASK:

Say Y here to enable the kernel to detect "hung tasks",
which are bugs that cause the task to be stuck in
uninterruptible "D" state indefinitiley.

When a hung task is detected, the kernel will print the
current stack trace (which you should report), but the
task will stay in uninterruptible state. If lockdep is
enabled then all held locks will also be reported. This
feature has negligible overhead.


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Full configuration for 2.6.31 on alpha


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