Re: [PATCH bpf-next v2 0/4] Add ftrace direct call for arm64

From: Steven Rostedt
Date: Thu Oct 06 2022 - 12:29:28 EST

On Thu, 6 Oct 2022 18:19:12 +0200
Florent Revest <revest@xxxxxxxxxxxx> wrote:

> Sure, we can give this a try, I'll work on a macro that generates the
> 7 callbacks and we can check how much that helps. My belief right now
> is that ftrace's iteration over all ops on arm64 is where we lose most
> time but now that we have numbers it's pretty easy to check hypothesis
> :)

Ah, I forgot that's what Mark's code is doing. But yes, that needs to be
fixed first. I forget that arm64 doesn't have the dedicated trampolines yet.

So, let's hold off until that is complete.

-- Steve