linux-kernel - Re: [RFC PATCH 1/4] mm: move memtest under /mm

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Date:	Tue, 03 Mar 2015 09:46:41 -0800
From:	Randy Dunlap <rdunlap@...radead.org>
To:	Vladimir Murzin <vladimir.murzin@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
CC:	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"hpa@...or.com" <hpa@...or.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"lauraa@...eaurora.org" <lauraa@...eaurora.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"arnd@...db.de" <arnd@...db.de>,
	Mark Rutland <Mark.Rutland@....com>,
	"ard.biesheuvel@...aro.org" <ard.biesheuvel@...aro.org>
Subject: Re: [RFC PATCH 1/4] mm: move memtest under /mm

On 03/03/15 01:22, Vladimir Murzin wrote:
> On 03/03/15 01:52, Randy Dunlap wrote:
>> On 03/02/15 06:55, Vladimir Murzin wrote:
>>> There is nothing platform dependent in the core memtest code, so other platform
>>> might benefit of this feature too.
>>>
>>> Signed-off-by: Vladimir Murzin <vladimir.murzin@....com>
>>> ---
>>>  arch/x86/Kconfig            |   11 ----
>>>  arch/x86/include/asm/e820.h |    8 ---
>>>  arch/x86/mm/Makefile        |    2 -
>>>  arch/x86/mm/memtest.c       |  118 -------------------------------------------
>>>  include/linux/memblock.h    |    8 +++
>>>  lib/Kconfig.debug           |   11 ++++
>>>  mm/Makefile                 |    1 +
>>>  mm/memtest.c                |  118 +++++++++++++++++++++++++++++++++++++++++++
>>>  8 files changed, 138 insertions(+), 139 deletions(-)
>>>  delete mode 100644 arch/x86/mm/memtest.c
>>>  create mode 100644 mm/memtest.c
>>
>>> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
>>> index c5cefb3..8eb064fd 100644
>>> --- a/lib/Kconfig.debug
>>> +++ b/lib/Kconfig.debug
>>> @@ -1732,6 +1732,17 @@ config TEST_UDELAY
>>>  
>>>  	  If unsure, say N.
>>>  
>>> +config MEMTEST
>>> +	bool "Memtest"
>>> +	---help---
>>> +	  This option adds a kernel parameter 'memtest', which allows memtest
>>> +	  to be set.
>>> +	        memtest=0, mean disabled; -- default
>>> +	        memtest=1, mean do 1 test pattern;
>>> +	        ...
>>> +	        memtest=4, mean do 4 test patterns.
>>
>> This sort of implies a max of 4 test patterns, but it seems to be 17
>> if I counted correctly, so if someone wants to test all of the possible
>> 'memtest' patterns, they would need to use 'memtest=17', is that correct?
>>
> 
> Yes, that correct. Additional patterns were introduced since 63823126
> "x86: memtest: add additional (regular) test patterns", but looks like
> Kconfig was not updated that time. Do you want me to fold updates for
> that info or make a separate patch?

Either is OK with me but it probably should be a separate patch.

Thanks.
-- 
~Randy
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