[PATCH] Allow panics and reboots at oops time.

[PATCH] Allow panics and reboots at oops time.

From: Russell Miller <rmiller@duskglow.com>

A BUG or an oops will often leave a machine in a useless state.  There is no
way to remotely recover the machine from that state.

The patch adds a /proc/sys/kernel/panic_on_oops sysctl which, when set, will
cause the x86 kernel to call panic() at the end of the oops handler.  If the
user has also set /proc/sys/kernel/panic then a reboot will occur.

The implementation will try to sleep for a while before panicing so the oops
info has a chance of hitting the logs.

The implementation is designed so that other architectures can easily do this
in their oops handlers.