Re: [PATCH] BPF: Disable on PREEMPT_RT

David Miller
2019-10-17T22:23:35Z

From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 18 Oct 2019 00:11:38 +0200 (CEST)

> tcpdump and wireshark work perfectly fine on a BPF disabled kernel at least
> in the limited way I am using them.

Yes it works, but with every packet flowing through the system getting
copied into userspace. This takes us back to 1992 :-)