Re: [PATCH] netfilter: use per-cpu recursive lock (v10)

Paul Mackerras
2009-04-20T21:24:27Z

Eric Dumazet writes:

> OK, but we still have a problem on machines with >= 250 cpus,
> because calling 250 times spin_lock() is going to overflow preempt_count,
> as each spin_lock() increases preempt_count by one.

Huh? Each cpu has its own separate preempt_count.

Paul.