Re: [PATCH] kernel: exit: cleanup release_thread()

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Kefeng,

On Fri, Aug 19, 2022 at 3:39 AM Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:
> Only x86 has own release_thread(), introduce a new weak
> release_thread() function to clean empty definitions in
> other ARCHs.
>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>

>  arch/m68k/include/asm/processor.h       | 5 -----

Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

> --- a/kernel/exit.c
> +++ b/kernel/exit.c
> @@ -183,6 +183,10 @@ void put_task_struct_rcu_user(struct task_struct *task)
>                 call_rcu(&task->rcu, delayed_put_task_struct);
>  }
>
> +void __weak release_thread(struct task_struct *dead_task)
> +{
> +}

As the default implementation is empty, it might be better to keep
this as a static inline function, protected by #ifndef release_thread,
and let x86 #define release_thread.

> +
>  void release_task(struct task_struct *p)
>  {
>         struct task_struct *leader;

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds