Subject: Re: [PATCH v13 bpf-next 1/1] rethook: x86: Add rethook x86 implementation

From: Peter Zijlstra <[email-masked]>
Date: Wed, 23 Mar 2022 13:34:54 +0100

On Wed, Mar 23, 2022 at 08:41:19PM +0900, Masami Hiramatsu wrote:

> > Also, what's rethook for anyway?
> 
> Rethook is a feature which hooks the function return. Most of the
> logic came from the kretprobe. Simply to say, 'kretprobe - kprobe' is 
> the rethook :)

I got that far, but why did you take the bother to do these patches? Why
wasn't 'use kretprobe' a good enough option?