Re: [PATCH v2 4/5] LoongArch: ftrace: Add direct call trampoline samples support

[Steven Rostedt]

On Thu, 27 Apr 2023 10:12:31 +0800
Youling Tang <tangyouling@xxxxxxxxxxx> wrote:

> The ftrace samples need per-architecture trampoline implementations
> to save and restore argument registers around the calls to
> my_direct_func* and to restore polluted registers (eg: ra).
> 
> Signed-off-by: Qing Zhang <zhangqing@xxxxxxxxxxx>
> Signed-off-by: Youling Tang <tangyouling@xxxxxxxxxxx>
> ---
>  arch/loongarch/Kconfig                      |  2 +
>  samples/ftrace/ftrace-direct-modify.c       | 34 +++++++++++++++++
>  samples/ftrace/ftrace-direct-multi-modify.c | 41 +++++++++++++++++++++
>  samples/ftrace/ftrace-direct-multi.c        | 25 +++++++++++++
>  samples/ftrace/ftrace-direct-too.c          | 27 ++++++++++++++
>  samples/ftrace/ftrace-direct.c              | 23 ++++++++++++
>  6 files changed, 152 insertions(+)

Acked-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>

-- Steve