linux-kernel - Re: [PATCH v6 05/10] irqchip/gic-v3: Prefix all pr

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Date:	Tue, 26 Apr 2016 18:52:00 +0100
From:	Julien Grall <julien.grall@....com>
To:	Hanjun Guo <hanjun.guo@...aro.org>, kvmarm@...ts.cs.columbia.edu
Cc:	christoffer.dall@...aro.org, marc.zyngier@....com,
	fu.wei@...aro.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	wei@...hat.com, al.stone@...aro.org, gg@...mlogic.co.uk
Subject: Re: [PATCH v6 05/10] irqchip/gic-v3: Prefix all pr_* messages by
 "GICv3: "

Hi Hanjun,

Sorry for the late answer.

On 13/04/16 11:01, Hanjun Guo wrote:
> On 2016/4/11 23:32, Julien Grall wrote:
>> Currently, most of the pr_* messages in the GICv3 driver don't have a
>> prefix.  Add one to make clear where the messages come from.
>>
>> Signed-off-by: Julien Grall <julien.grall@....com>
>>
>> ---
>>      Changes in v6:
>>          - Patch added
>> ---
>>   drivers/irqchip/irq-gic-v3.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
>> index 5b7d3c2..6dc6f03 100644
>> --- a/drivers/irqchip/irq-gic-v3.c
>> +++ b/drivers/irqchip/irq-gic-v3.c
>> @@ -15,6 +15,8 @@
>>    * along with this program.  If not, see
>> <http://www.gnu.org/licenses/>.
>>    */
>>
>> +#define pr_fmt(fmt)    "GICv3: " fmt
>
> I don't think this patch is needed, as GICv3 and GICv2 will
> not be probed at the same time, did I miss something?

True, however this make slightly easier to know which driver is in-use 
and avoid to prefix all the messages with "GIC:" or "GICv3:".

>
> Further more, there are prefixes in pr_fmt in this
> patch using GIC:, with your patch added, it will print:
>
> GIV3: GIC: .....
>
> which is not a good idea.

I think it is better than having message without prefix at all.

Regards,

-- 
Julien Grall