Re: [PATCH tip/core/rcu 02/12] rcu: Panic if RCU tree can not accommodate all CPUs

[Peter Zijlstra]

On Fri, Jul 17, 2015 at 03:30:53PM -0700, Paul E. McKenney wrote:
> +	if (n > rcu_capacity[MAX_RCU_LVLS])
> +		panic("rcu_init_geometry: rcu_capacity[] is too small");

How can this ever happen? We _know_ NR_CPUS at compile time, there's no
way we can get more CPUs than that -- even if the hardware has more,
we'll stop enumerating.
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