linux-kernel - Re: [PATCH -tip v3&10 01/18] kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP

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Date:	Thu, 25 Feb 2010 10:10:56 -0500
From:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Jim Keniston <jkenisto@...ibm.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Anders Kaseorg <andersk@...lice.com>,
	Tim Abbott <tabbott@...lice.com>,
	Andi Kleen <andi@...stfloor.org>,
	Jason Baron <jbaron@...hat.com>
Subject: Re: [PATCH -tip v3&10 01/18] kprobes/x86: Cleanup
	RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE

* Masami Hiramatsu (mhiramat@...hat.com) wrote:
> Change RELATIVEJUMP_INSTRUCTION macro to RELATIVEJUMP_OPCODE since it
> represents just the opcode byte.

Acked-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>

> 
> Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
> Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: Jim Keniston <jkenisto@...ibm.com>
> Cc: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
> Cc: Christoph Hellwig <hch@...radead.org>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: H. Peter Anvin <hpa@...or.com>
> Cc: Anders Kaseorg <andersk@...lice.com>
> Cc: Tim Abbott <tabbott@...lice.com>
> Cc: Andi Kleen <andi@...stfloor.org>
> Cc: Jason Baron <jbaron@...hat.com>
> Cc: Mathieu Desnoyers <compudj@...stal.dyndns.org>
> ---
> 
>  arch/x86/include/asm/kprobes.h |    2 +-
>  arch/x86/kernel/kprobes.c      |    2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h
> index 4fe681d..eaec8ea 100644
> --- a/arch/x86/include/asm/kprobes.h
> +++ b/arch/x86/include/asm/kprobes.h
> @@ -32,7 +32,7 @@ struct kprobe;
>  
>  typedef u8 kprobe_opcode_t;
>  #define BREAKPOINT_INSTRUCTION	0xcc
> -#define RELATIVEJUMP_INSTRUCTION 0xe9
> +#define RELATIVEJUMP_OPCODE 0xe9
>  #define MAX_INSN_SIZE 16
>  #define MAX_STACK_SIZE 64
>  #define MIN_STACK_SIZE(ADDR)					       \
> diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
> index 5de9f4a..15177cd 100644
> --- a/arch/x86/kernel/kprobes.c
> +++ b/arch/x86/kernel/kprobes.c
> @@ -115,7 +115,7 @@ static void __kprobes set_jmp_op(void *from, void *to)
>  	} __attribute__((packed)) * jop;
>  	jop = (struct __arch_jmp_op *)from;
>  	jop->raddr = (s32)((long)(to) - ((long)(from) + 5));
> -	jop->op = RELATIVEJUMP_INSTRUCTION;
> +	jop->op = RELATIVEJUMP_OPCODE;
>  }
>  
>  /*
> 
> 
> -- 
> Masami Hiramatsu
> 
> Software Engineer
> Hitachi Computer Products (America), Inc.
> Software Solutions Division
> 
> e-mail: mhiramat@...hat.com
> 

-- 
Mathieu Desnoyers
Operating System Efficiency Consultant
EfficiOS Inc.
http://www.efficios.com
--
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