linux-kernel - Re: [PATCH v5 6/6] kprobes: Add arm64 case in kprobe example module

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Message-ID: <54E5F0D0.5030606@hitachi.com>
Date:	Thu, 19 Feb 2015 23:18:56 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	David Long <dave.long@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	Sandeepa Prabhu <sandeepa.prabhu@...aro.org>,
	William Cohen <wcohen@...hat.com>,
	Steve Capper <steve.capper@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"Jon Medhurst (Tixy)" <tixy@...aro.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	davem@...emloft.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 6/6] kprobes: Add arm64 case in kprobe example module

(2015/02/18 8:11), David Long wrote:
> From: Sandeepa Prabhu <sandeepa.prabhu@...aro.org>
> 
> Add info prints in sample kprobe handlers for ARM64
> 
> Signed-off-by: Sandeepa Prabhu <sandeepa.prabhu@...aro.org>

Looks good to me:)

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

Thanks!

> ---
>  samples/kprobes/kprobe_example.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
> index 366db1a..51d459c 100644
> --- a/samples/kprobes/kprobe_example.c
> +++ b/samples/kprobes/kprobe_example.c
> @@ -42,6 +42,10 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
>  			" ex1 = 0x%lx\n",
>  		p->addr, regs->pc, regs->ex1);
>  #endif
> +#ifdef CONFIG_ARM64
> +	pr_info("pre_handler: p->addr = 0x%p, pc = 0x%lx\n",
> +		p->addr, (long)regs->pc);
> +#endif
>  
>  	/* A dump_stack() here will give a stack backtrace */
>  	return 0;
> @@ -67,6 +71,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
>  	printk(KERN_INFO "post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
>  		p->addr, regs->ex1);
>  #endif
> +#ifdef CONFIG_ARM64
> +	pr_info("post_handler: p->addr = 0x%p, pc = 0x%lx\n",
> +		p->addr, (long)regs->pc);
> +#endif
>  }
>  
>  /*
> 


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


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