linux-kernel - Re: [PATCH] ftrace: Make ftrace

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Message-Id: <20241009074140.b163eceb2f973227b400c962@kernel.org>
Date: Wed, 9 Oct 2024 07:41:40 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux Trace Kernel
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Subject: Re: [PATCH] ftrace: Make ftrace_regs abstract from direct use

Hi Steve, 

> diff --git a/include/asm-generic/ftrace.h b/include/asm-generic/ftrace.h
> index 3a23028d69d2..ba7b7d6e55d6 100644
> --- a/include/asm-generic/ftrace.h
> +++ b/include/asm-generic/ftrace.h
> @@ -10,4 +10,17 @@
>   * common definitions are already in linux/ftrace.h.
>   */
>  
> +#ifndef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
> +struct __arch_ftrace_regs {
> +	struct pt_regs		regs;
> +};
> +
> +#define arch_ftrace_get_regs(fregs)					\
> +	({ struct __arch_fregs_regs *__f = (struct __arch_ftrace_regs *)(fregs); \
> +		&__f->regs;						\
> +	})
> +
> +struct ftrace_regs;
> +#define arch_ftrace_regs(fregs) ((struct __arch_ftrace_regs *)(fregs))
> +
>  #endif /* __ASM_GENERIC_FTRACE_H__ */

There seems no #endif for CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS.
I wonder how it passed the build. (#ifdef block does not affect over
the file boundary?

Thank you,

-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>