linux-kernel - Re: [PATCH 2/3] powerpc: Bail out of KGDB when we've been triggered

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Message-ID: <50358D6E.20209@windriver.com>
Date:	Thu, 23 Aug 2012 09:54:54 +0800
From:	"tiejun.chen" <tiejun.chen@...driver.com>
To:	Tabi Timur-B04825 <B04825@...escale.com>
CC:	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	"jason.wessel@...driver.com" <jason.wessel@...driver.com>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] powerpc: Bail out of KGDB when we've been triggered

On 08/22/2012 11:07 PM, Tabi Timur-B04825 wrote:
> On Wed, Aug 22, 2012 at 5:43 AM, Tiejun Chen <tiejun.chen@...driver.com> wrote:
> 
>> +int kgdb_skipexception(int exception, struct pt_regs *regs)
>> +{
>> +       if (kgdb_isremovedbreak(regs->nip))
>> +               return 1;
>> +
>> +       return 0;
>> +}
> 
> int kgdb_skipexception(int exception, struct pt_regs *regs)
> {
>         return !!kgdb_isremovedbreak(regs->nip));
> }
> 
> If the caller only cares about zero vs. non-zero, you can drop the !!.

Yes, so 'return kgdb_isremovedbreak(regs->nip);' is already fine and simple.

I'll update this as v2 so thanks your comment.

Tiejun
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