linux-kernel - Re: [PATCH v2 12/23] nds32: use asm-generic/mmu

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Date:   Fri, 28 Aug 2020 18:09:54 +0800
From:   Greentime Hu <green.hu@...il.com>
To:     Nicholas Piggin <npiggin@...il.com>
Cc:     linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Arnd Bergmann <arnd@...db.de>, Nick Hu <nickhu@...estech.com>,
        Vincent Chen <deanbo422@...il.com>
Subject: Re: [PATCH v2 12/23] nds32: use asm-generic/mmu_context.h for no-op implementations

Nicholas Piggin <npiggin@...il.com> 於 2020年8月26日 週三 下午10:53寫道：
>
> Cc: Nick Hu <nickhu@...estech.com>
> Cc: Greentime Hu <green.hu@...il.com>
> Cc: Vincent Chen <deanbo422@...il.com>
> Signed-off-by: Nicholas Piggin <npiggin@...il.com>
> ---
>  arch/nds32/include/asm/mmu_context.h | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
>
> diff --git a/arch/nds32/include/asm/mmu_context.h b/arch/nds32/include/asm/mmu_context.h
> index b8fd3d189fdc..c651bc8cacdc 100644
> --- a/arch/nds32/include/asm/mmu_context.h
> +++ b/arch/nds32/include/asm/mmu_context.h
> @@ -9,6 +9,7 @@
>  #include <asm/proc-fns.h>
>  #include <asm-generic/mm_hooks.h>
>
> +#define init_new_context init_new_context
>  static inline int
>  init_new_context(struct task_struct *tsk, struct mm_struct *mm)
>  {
> @@ -16,8 +17,6 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
>         return 0;
>  }
>
> -#define destroy_context(mm)    do { } while(0)
> -
>  #define CID_BITS       9
>  extern spinlock_t cid_lock;
>  extern unsigned int cpu_last_cid;
> @@ -47,10 +46,6 @@ static inline void check_context(struct mm_struct *mm)
>                 __new_context(mm);
>  }
>
> -static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
> -{
> -}
> -
>  static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
>                              struct task_struct *tsk)
>  {
> @@ -62,7 +57,6 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
>         }
>  }
>
> -#define deactivate_mm(tsk,mm)  do { } while (0)
> -#define activate_mm(prev,next) switch_mm(prev, next, NULL)
> +#include <asm-generic/mmu_context.h>
>
>  #endif

Acked-by: Greentime Hu <green.hu@...il.com>
Thank you. :)