On Mon, May 15, 2023 at 6:09 AM Yafang Shao <laoar.shao@xxxxxxxxx> wrote:
>
> After commit e21aa341785c ("bpf: Fix fexit trampoline."), the selector
> is only used to indicate how many times the bpf trampoline image are
> updated and been displayed in the trampoline ksym name. After the
> trampoline is freed, the selector will start from 0 again. So the
> selector is a useless value to the user. We can remove it.
> If the user want to check whether the bpf trampoline image has been updated
> or not, the user can compare the address. Each time the trampoline image
> is updated, the address will change consequently.
>
> Jiri pointed out antoher issue that perf is still using the old name
> "bpf_trampoline_%lu", so this change can fix the issue in perf.
>
> Fixes: e21aa341785c ("bpf: Fix fexit trampoline.")
> Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
> Cc: Song Liu <song@xxxxxxxxxx>
> Cc: Jiri Olsa <olsajiri@xxxxxxxxx>
Acked-by: Song Liu <song@xxxxxxxxxx>
