Excerpts from Andy Lutomirski's message of June 16, 2021 1:21 pm:
> membarrier_arch_switch_mm()'s sole implementation and caller are in
> arch/powerpc. Having a fallback implementation in include/linux is
> confusing -- remove it.
>
> It's still mentioned in a comment, but a subsequent patch will remove
> it.
>
> Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
> Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Acked-by: Nicholas Piggin <npiggin@xxxxxxxxx>
> ---
> include/linux/sched/mm.h | 7 -------
> 1 file changed, 7 deletions(-)
>
> diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
> index 24d97d1b6252..10aace21d25e 100644
> --- a/include/linux/sched/mm.h
> +++ b/include/linux/sched/mm.h
> @@ -350,13 +350,6 @@ extern void membarrier_exec_mmap(struct mm_struct *mm);
> extern void membarrier_update_current_mm(struct mm_struct *next_mm);
>
> #else
> -#ifdef CONFIG_ARCH_HAS_MEMBARRIER_CALLBACKS
> -static inline void membarrier_arch_switch_mm(struct mm_struct *prev,
> - struct mm_struct *next,
> - struct task_struct *tsk)
> -{
> -}
> -#endif
> static inline void membarrier_exec_mmap(struct mm_struct *mm)
> {
> }
> --
> 2.31.1
>
>
