linux-kernel - Re: [PATCH v9 02/17] riscv: Rename __switch_to

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Date:   Tue, 14 Dec 2021 08:29:19 -0800 (PST)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     greentime.hu@...ive.com
CC:     Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        aou@...s.berkeley.edu
Subject:     Re: [PATCH v9 02/17] riscv: Rename __switch_to_aux -> fpu

On Tue, 09 Nov 2021 01:48:14 PST (-0800), greentime.hu@...ive.com wrote:
> From: Guo Ren <ren_guo@...ky.com>
>
> The name of __switch_to_aux is not clear and rename it with the
> determine function: __switch_to_fpu. Next we could add other regs'
> switch.
>
> Signed-off-by: Guo Ren <ren_guo@...ky.com>
> Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
> Reviewed-by: Anup Patel <anup@...infault.org>
> Reviewed-by: Greentime Hu <greentime.hu@...ive.com>
> Signed-off-by: Greentime Hu <greentime.hu@...ive.com>
> ---
>  arch/riscv/include/asm/switch_to.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/riscv/include/asm/switch_to.h b/arch/riscv/include/asm/switch_to.h
> index 0a3f4f95c555..ec83770b3d98 100644
> --- a/arch/riscv/include/asm/switch_to.h
> +++ b/arch/riscv/include/asm/switch_to.h
> @@ -45,7 +45,7 @@ static inline void fstate_restore(struct task_struct *task,
>  	}
>  }
>
> -static inline void __switch_to_aux(struct task_struct *prev,
> +static inline void __switch_to_fpu(struct task_struct *prev,
>  				   struct task_struct *next)
>  {
>  	struct pt_regs *regs;
> @@ -65,7 +65,7 @@ static __always_inline bool has_fpu(void)
>  static __always_inline bool has_fpu(void) { return false; }
>  #define fstate_save(task, regs) do { } while (0)
>  #define fstate_restore(task, regs) do { } while (0)
> -#define __switch_to_aux(__prev, __next) do { } while (0)
> +#define __switch_to_fpu(__prev, __next) do { } while (0)
>  #endif
>
>  extern struct task_struct *__switch_to(struct task_struct *,
> @@ -76,7 +76,7 @@ do {							\
>  	struct task_struct *__prev = (prev);		\
>  	struct task_struct *__next = (next);		\
>  	if (has_fpu())					\
> -		__switch_to_aux(__prev, __next);	\
> +		__switch_to_fpu(__prev, __next);	\
>  	((last) = __switch_to(__prev, __next));		\
>  } while (0)

Reviewed-by: Palmer Dabbelt <palmer@...osinc.com>