Re: [PATCH] net: add net namespace inode for all net_dev events

On Tue, Mar 9, 2021 at 12:37 PM Steven Rostedt [off-list ref] wrote:

The size of the fields and order changes all the time in various events. I
recommend doing so *all the time*. If you upgrade a kernel, then all the bpf
programs you have for that kernel should also be updated. You can't rely on
fields being the same, size or order. The best you can do is expect the
field to continue to exist, and that's not even a guarantee.

+1. Tracing bpf progs already do that.
Old style tracing progs do it based on the kernel version.
New style is using CO-RE.