linux-kernel - Re: [PATCH v5 2/4] arm64: split syscall_trace() into separate functions for enter/exit

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Date:	Mon, 28 Apr 2014 18:58:35 +0900
From:	AKASHI Takahiro <takahiro.akashi@...aro.org>
To:	Will Deacon <will.deacon@....com>
CC:	"viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
	"eparis@...hat.com" <eparis@...hat.com>,
	"rgb@...hat.com" <rgb@...hat.com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"dsaxena@...aro.org" <dsaxena@...aro.org>,
	"arndb@...db.de" <arndb@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-audit@...hat.com" <linux-audit@...hat.com>
Subject: Re: [PATCH v5 2/4] arm64: split syscall_trace() into separate functions
 for enter/exit

On 04/16/2014 10:27 PM, Will Deacon wrote:
> Hi Akashi,
>
> On Sat, Mar 15, 2014 at 05:39:06AM +0000, AKASHI Takahiro wrote:
>> As done in arm, this change makes it easy to confirm we invoke syscall
>> related hooks, including syscall tracepoint, audit and seccomp which would
>> be implemented later, in correct order. That is, undoing operations in the
>> opposite order on exit that they were done on entry.
>>
>> Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org>
>
> [...]
>
>> +static void tracehook_report_syscall(struct pt_regs *regs,
>> +				     enum ptrace_syscall_dir dir)
>>   {
>> +	int scrach;
>
> s/scrach/scratch/

I will fix it.

> Although, I'd rather have a variable with a more meaningful name. How about
> regno?

OK, I will use regno in the next revision, which I will submit soon.

> With that,
>
>    Acked-by: Will Deacon <will.deacon@....com>

Thank you so much,
-Takahiro AKASHI

> Cheers,
>
> Will
>
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