linux-kernel - Re: [PATCH] x86, kprobes: Hide skip_singlestep forward declaration properly

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Date:	Thu, 20 Sep 2012 18:01:31 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Borislav Petkov <bp@...64.org>, Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>, X86-ML <x86@...nel.org>,
	Borislav Petkov <borislav.petkov@....com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] x86, kprobes: Hide skip_singlestep forward declaration
 properly

(2012/09/19 22:46), Borislav Petkov wrote:
> From: Borislav Petkov <borislav.petkov@....com>
> 
> I get
> 
> arch/x86/kernel/kprobes.c:544:23: warning: ‘skip_singlestep’ declared ‘static’ but never defined [-Wunused-function]
> 
> on tip/auto-latest.
> 
> Hide the forward declaration in the KPROBES_CAN_USE_FTRACE as it
> is done in its callsites.

Thank you for reporting and fixing :)

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

Ingo, please pull this.

Thank you,

> 
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>
> ---
>  arch/x86/kernel/kprobes.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
> index b7c2a85d1926..ac4188368fdf 100644
> --- a/arch/x86/kernel/kprobes.c
> +++ b/arch/x86/kernel/kprobes.c
> @@ -541,8 +541,11 @@ reenter_kprobe(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb
>  	return 1;
>  }
>  
> +#ifdef KPROBES_CAN_USE_FTRACE
>  static void __kprobes skip_singlestep(struct kprobe *p, struct pt_regs *regs,
>  				      struct kprobe_ctlblk *kcb);
> +#endif
> +
>  /*
>   * Interrupts are disabled on entry as trap3 is an interrupt gate and they
>   * remain disabled throughout this function.
> 


-- 
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com


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