linux-kernel - Re: [PATCH] dmaengine: dmatest: add a maximum number of test iterations

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Date:	Thu, 23 Jul 2009 10:40:51 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Dan Williams <dan.j.williams@...el.com>
CC:	maciej.sosnowski@...el.com, avictor.za@...il.com,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	haavard.skinnemoen@...el.com, patrice.vilchez@...el.com,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] dmaengine: dmatest: add a maximum number of test 	iterations

Dan Williams :
> On Fri, Jul 3, 2009 at 10:26 AM, Nicolas Ferre<nicolas.ferre@...el.com> wrote:
>> The dmatest usually waits for the killing of its kthreads to stop
>> running tests.  This patch adds a parameter that sets a maximum
>> number of test iterations.
>>
>> This feature is quite interesting for debugging when you set a lot of
>> traces in your dmaengine controller driver.
>>
>> Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>
>> ---
>>  drivers/dma/dmatest.c |   15 ++++++++++++++-
>>  1 files changed, 14 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
>> index fb7da51..0131a1f 100644
>> --- a/drivers/dma/dmatest.c
>> +++ b/drivers/dma/dmatest.c
>> @@ -38,6 +38,11 @@ module_param(max_channels, uint, S_IRUGO);
>>  MODULE_PARM_DESC(max_channels,
>>                "Maximum number of channels to use (default: all)");
>>
>> +static unsigned int iteration_nbr = 0;
>> +module_param(iteration_nbr, uint, S_IRUGO);
>> +MODULE_PARM_DESC(iteration_nbr,
>> +               "Iteration number before stopping test (default: infinite)");
>> +
> 
> This is a minor nit, but for a user facing interface I don't think we
> should export abbreviated variable names.  I'll apply this with the
> following fixups:
> 
> s/iteration_nbr/iterations/
> s/Iteration number/Iterations/
> 
> ...as well as a fix for the checkpatch violation of initializing a static to 0.

Ok fine.
(initialization to 0 has also been corrected by Andrew Morton in his
patch series).

Thanks Dan, Bye,
-- 
Nicolas Ferre

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