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SubjectRe: rcu self-detected stall messages on OMAP3, 4 boards
* Paul E. McKenney <paulmck@linux.vnet.ibm.com> [120921 12:58]:
>
> Just to make sure I understand the combinations:
>
> o All stalls have happened when running a minimal userspace.
> o CONFIG_NO_HZ=n suppresses the stalls.
> o CONFIG_RCU_FAST_NO_HZ (which depends on CONFIG_NO_HZ=y) has
> no observable effect on the stalls.

The reason why you may need minimal userspace is to cut down
the number of timers waking up the system with NO_HZ.
Booting with init=/bin/sh might also do the trick for that.

Regards,

Tony


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