Messages in this thread | | | Date | Fri, 21 Sep 2012 13:31:49 -0700 | From | Tony Lindgren <> | Subject | Re: rcu self-detected stall messages on OMAP3, 4 boards |
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* 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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