Re: linux-next: build warnings after merge of the tip tree

Steven Rostedt
2022-03-21T16:46:01Z

On Mon, 21 Mar 2022 17:40:32 +0100
Peter Zijlstra <peterz@infradead.org> wrote:

> func_B:
> call __fentry__ /* push func_B */
> ...
> call __fexit__ /* pop 1 + tails */
> ret
>
> func_A:
> call __fentry__ /* push func_A */
> ...
> call __ftail__ /* mark func_A tail */
> jmp func_B
>
> func_C:
> call __fentry__ /* push func_C */
> call func_A;
> ...
> call __fexit__ /* pop 1 + tails */
> ret;

This also assumes that we need to trace everything that is marked. I
mentioned in another email, what do we do if we only trace funcA?

-- Steve