Re: [RT PATCH 2/2] net: add a lock around icmp_sk()

On Thu, 2016-09-01 at 10:11 +0200, Sebastian Andrzej Siewior wrote:

On !RT local_lock() is preempt_disable().
On RT local_lock() is a per-CPU sleeping spinlock which can be taken
recursively by the owner.

Ok, thanks for the explanation, the 'recursively' part I was not aware
of ;)