linux-kernel - Re: [PATCH v4 02/16] ARM: move shared uprobe/kprobe definitions into new include file

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Date:	Fri, 20 Dec 2013 12:46:08 +0000
From:	"Jon Medhurst (Tixy)" <tixy@...aro.org>
To:	David Long <dave.long@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	Rabin Vincent <rabin@....in>, Oleg Nesterov <oleg@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	davem@...emloft.net, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 02/16] ARM: move shared uprobe/kprobe definitions
 into new include file

On Sun, 2013-12-15 at 23:08 -0500, David Long wrote:
> From: "David A. Long" <dave.long@...aro.org>
> 
> Separate the kprobe-only definitions from the definitions needed by
> both kprobes and uprobes.
> 
> Signed-off-by: David A. Long <dave.long@...aro.org>
> ---
>  arch/arm/include/asm/kprobes.h | 15 +--------------
>  arch/arm/include/asm/probes.h  | 18 ++++++++++++++++++
>  2 files changed, 19 insertions(+), 14 deletions(-)
>  create mode 100644 arch/arm/include/asm/probes.h
> 
> diff --git a/arch/arm/include/asm/kprobes.h b/arch/arm/include/asm/kprobes.h
> index f82ec22..30fc11b 100644
> --- a/arch/arm/include/asm/kprobes.h
> +++ b/arch/arm/include/asm/kprobes.h
> @@ -28,21 +28,8 @@
>  #define kretprobe_blacklist_size	0
>  
>  typedef u32 kprobe_opcode_t;
> -
>  struct kprobe;
> -typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
> -typedef unsigned long (kprobe_check_cc)(unsigned long);
> -typedef void (kprobe_insn_singlestep_t)(struct kprobe *, struct pt_regs *);
> -typedef void (kprobe_insn_fn_t)(void);
> -
> -/* Architecture specific copy of original instruction. */
> -struct arch_specific_insn {
> -	kprobe_opcode_t			*insn;
> -	kprobe_insn_handler_t		*insn_handler;
> -	kprobe_check_cc			*insn_check_cc;
> -	kprobe_insn_singlestep_t	*insn_singlestep;
> -	kprobe_insn_fn_t		*insn_fn;
> -};
> +#include <asm/probes.h>
>  
>  struct prev_kprobe {
>  	struct kprobe *kp;
> diff --git a/arch/arm/include/asm/probes.h b/arch/arm/include/asm/probes.h
> new file mode 100644
> index 0000000..21da148
> --- /dev/null
> +++ b/arch/arm/include/asm/probes.h
> @@ -0,0 +1,18 @@

This new file doesn't have any copyright/license notice, I suggest you
copy the one from kprobes.h and include a note to say this new files
contents were copied, e.g. start it like...

/*
 * arch/arm/include/asm/probes.h
 *
 * Original contents copied from arch/arm/include/asm/kprobes.h
 * which contains the following notice...
 *
 * Copyright (C) 2006, 2007 Motorola Inc.
 *
 * This program is free software; you can redistribute it and/or modify
[...]


> +#ifndef _ASM_PROBES_H
> +#define _ASM_PROBES_H
> +
> +typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *);
> +typedef unsigned long (kprobe_check_cc)(unsigned long);
> +typedef void (kprobe_insn_singlestep_t)(struct kprobe *, struct pt_regs *);
> +typedef void (kprobe_insn_fn_t)(void);
> +
> +/* Architecture specific copy of original instruction. */
> +struct arch_specific_insn {
> +	kprobe_opcode_t			*insn;
> +	kprobe_insn_handler_t		*insn_handler;
> +	kprobe_check_cc			*insn_check_cc;
> +	kprobe_insn_singlestep_t	*insn_singlestep;
> +	kprobe_insn_fn_t		*insn_fn;
> +};
> +
> +#endif




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