Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter()

[Peter Zijlstra]

On Wed, Feb 26, 2020 at 11:25:09AM +0100, Peter Zijlstra wrote:
> Subject: sh/ftrace: Move arch_ftrace_nmi_{enter,exit} into nmi exception
> From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Date: Mon Feb 24 22:26:21 CET 2020
> 
> SuperH is the last remaining user of arch_ftrace_nmi_{enter,exit}(),
> remove it from the generic code and into the SuperH code.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> ---

> --- a/arch/sh/kernel/traps.c
> +++ b/arch/sh/kernel/traps.c
> @@ -170,11 +170,21 @@ BUILD_TRAP_HANDLER(bug)
>  	force_sig(SIGTRAP);
>  }
>  
> +#ifdef CONFIG_HAVE_DYNAMIC_FTRACE

build robot just informed me that this ought to s/HAVE_//

> +extern void arch_ftrace_nmi_enter(void);
> +extern void arch_ftrace_nmi_exit(void);
> +#else
> +static inline void arch_ftrace_nmi_enter(void) { }
> +static inline void arch_ftrace_nmi_exit(void) { }
> +#endif