linux-kernel - Re: [PATCH v2 05/13] uprobes: add arch write opcode hook

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Date:	Sat, 2 Nov 2013 15:03:39 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	David Long <dave.long@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, Rabin Vincent <rabin@....in>,
	"Jon Medhurst (Tixy)" <tixy@...aro.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/13] uprobes: add arch write opcode hook

On 11/01, David Long wrote:
>
> On 10/29/13 15:59, Oleg Nesterov wrote:
>>
>> Or. arm can actually reimplement set_swbp(). This doesn't mean the
>> duplication of write_opcode() code, we can simply export this helper.
>>
>
> That actually looks to me like the cleanest approach.  I have changed
> the static write_opcode() to a global uprobe_write_opcode(), and now
> call it from an arm set_swbp().

OK, great.

> Please do *not* make set_swbp() (and set_orig_insn()) static's.  It
> looks like we now have a use for at least one of them.

I am not sure... it still seems to me it makes sense to cleanup this
interface...

But. I am not going to do this until we merge your changes. We will
see then.

Oleg.

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