linux-kernel - Re: [PATCH 2/2] mtd: torturetest: add the support for random data pattern

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Message-ID: <alpine.DEB.2.00.1302050900010.3736@lnxricardw.se.axis.com>
Date:	Tue, 5 Feb 2013 09:05:18 +0100
From:	Ricard Wanderlof <ricard.wanderlof@...s.com>
To:	Huang Shijie <b32955@...escale.com>
CC:	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"dedekind1@...il.com" <dedekind1@...il.com>
Subject: Re: [PATCH 2/2] mtd: torturetest: add the support for random data
 pattern


On Tue, 5 Feb 2013, Huang Shijie wrote:

> Add a new module parameter 'pattern'. If it is set to zero, we will use 
> the 55/AA pattern to torture the nand blocks; if it is set to a non-zero 
> value, we will use the random data pattern.

Not a big issue in any way, but if you're using a numeric parameter value 
anyway, could not one use a range of the permissable values to set a seed 
for the random generation, so that the test can be repeated with the same 
set of random numbers?

Something like

0 => 55/AA
-1 => random
1 and up => random, specifying seed for random number generator.

> +MODULE_PARM_DESC(pattern, "0 for 55/AA pattern(default), else for
> +				the random pattern");

I'd suggest something like "0 for 55/AA pattern (default), non-zero for 
random pattern".

(Or "-1 for 55/AA pattern (default), else random; >=1 sets seed" if 
changed according to the above).

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30
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