Re: [S390] add arch_trampoline_kprobe.

[Ananth N Mavinakayanahalli <ananth@in.ibm.com>]

On Fri, Apr 20, 2007 at 01:08:42PM +0200, Martin Schwidefsky wrote:
> From: Martin Schwidefsky <schwidefsky@de.ibm.com>
> 
> Add the missing arch_trampoline_kprobe function for s390 required by
> kprobes-the-on-off-knob-thru-debugfs-updated.patch.

Martin,

Cornelia provided this patch sometime earlier
(http://marc.info/?l=linux-kernel&m=117620748921086&w=2). Andrew has
picked it up into -mm.

Ananth

> 
> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
> Cc: Srinivasa DS <srinivasa@in.ibm.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
> ---
> 
>  arch/s390/kernel/kprobes.c |    7 +++++++
>  1 files changed, 7 insertions(+)
> 
> diff -urpN linux-2.6/arch/s390/kernel/kprobes.c linux-2.6-patched/arch/s390/kernel/kprobes.c
> --- linux-2.6/arch/s390/kernel/kprobes.c	2007-04-19 17:12:40.000000000 +0200
> +++ linux-2.6-patched/arch/s390/kernel/kprobes.c	2007-04-19 17:12:09.000000000 +0200
> @@ -658,6 +658,13 @@ static struct kprobe trampoline_p = {
>  	.pre_handler = trampoline_probe_handler
>  };
> 
> +int __kprobes arch_trampoline_kprobe(struct kprobe *p)
> +{
> +	if (p->addr == (kprobe_opcode_t *)&kretprobe_trampoline)
> +		return 1;
> +	return 0;
> +}
> +
>  int __init arch_init_kprobes(void)
>  {
>  	return register_kprobe(&trampoline_p);
-
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