linux-kernel - Re: [PATCH] ARM: mm: Fix ECC mem policy printk

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Date:	Wed, 30 Oct 2013 15:23:22 +0100
From:	Michal Simek <monstr@...str.eu>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	Michal Simek <michal.simek@...inx.com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Nicolas Pitre <nico@...aro.org>,
	Vitaly Andrianov <vitalya@...com>,
	Cyril Chemparathy <cyril@...com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: mm: Fix ECC mem policy printk

On 10/30/2013 02:07 PM, Russell King - ARM Linux wrote:
> On Wed, Oct 30, 2013 at 01:46:18PM +0100, Michal Simek wrote:
>> Russell, Will: We discussed this at KS that will be good
>> to rephrase it or have different logic around this.
>> I am not sure if we can also test that this bit is
>> implemented by particular SoC or not.
>>
>> Maybe logic should be that if SoC uses this bit
>> that message is shown in origin format to declare
>> that ECC is enabled or disabled.
>> When SoC doesn't implement it then do not show this message.
> 
> This is not quite what I meant - by making the change you have, you also
> omit to print the data cache policy.
> 
>> @@ -556,8 +556,9 @@ static void __init build_mem_type_table(void)
>>  		mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WB;
>>  		break;
>>  	}
>> -	printk("Memory policy: ECC %sabled, Data cache %s\n",
>> -		ecc_mask ? "en" : "dis", cp->policy);
>> +	if (ecc_mask)
>> +		pr_info("Memory policy: ECC enabled, Data cache %s\n",
>> +			cp->policy);
> 
> 	pr_info("Memory policy: %sData cache %s\n",
> 		ecc_mask ? "ECC enabled, " : "", cp->policy);
> 
> is more what I was suggesting.

If this is what you would like to see it there, I am fine with that too.

Thanks,
Michal


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform



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