linux-kernel - Re: [PATCH 3/4] Add the "verbose" module option.

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Message-ID: <53DE5179.3080402@gmail.com>
Date:	Sun, 03 Aug 2014 17:12:57 +0200
From:	Goffredo Baroncelli <kreijack@...il.com>
To:	Jean Delvare <jdelvare@...e.de>
CC:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-kernel@...r.kernel.org, bryan@...troute.net,
	Goffredo Baroncelli <kreijack@...ind.it>
Subject: Re: [PATCH 3/4] Add the "verbose" module option.

On 08/03/2014 04:12 PM, Jean Delvare wrote:
> Hi Goffredo,
> 
> You messed up your Cc's ;-)

I fight hard with git-send-email.... In the next trip I will check two times !


> 
> On Fri,  1 Aug 2014 14:00:49 +0000, Goffredo Baroncelli wrote:
>> The "verbose" option controls the message in the kernel log
>> verbose = 0   no message
>> verbose = 1   log only the fan speed changes
>> verbose = 2   log the fan speed changes and the temperature changes
>>
>> Signed-off-by: Goffredo Baroncelli <kreijack@...ind.it>
>> ---
>>  drivers/macintosh/therm_windtunnel.c | 37 +++++++++++++++++++++++-------------
>>  1 file changed, 24 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
>> index 1e50455..0c4eb85 100644
>> --- a/drivers/macintosh/therm_windtunnel.c
>> +++ b/drivers/macintosh/therm_windtunnel.c
>> @@ -44,7 +44,11 @@
>>  #include <asm/sections.h>
>>  #include <asm/macio.h>
>>  
>> -#define LOG_TEMP		0			/* continuously log temperature */
>> +static int verbose = 1;	  /* see description below */
> 
> This comment seems useless.
ok

> 
>> +module_param(verbose, int, 0644);
>> +MODULE_PARM_DESC(verbose, "Vebosity level: 0=silent, "
> 
> Typo: Verbosity
Ok
> 
>> +				"1=log the fan tuning, "
>> +				"2=log the temperature.");
> 
> Trailing dot is not needed.
OK


>>  
>>  static struct {
[... cut cut cut ...]
>> +	/*
>> +	 * if verbose >0 log each fan tuning
>> +	 * if verbose >1 log each cpu temperature change
>> +	 */
> 
> I think it is a good idea to have all the printing in a single place.
> 
>> +	if ((verbose > 1 && x.temp != temp ) ||
> 
> No space before closing parenthesis. I know the original code did not
> follow the standard coding style but you have the opportunity to make
> it better. Same many times below. scripts/checkpatch.pl tells you about
> that and many other style issues, most of which are easily fixable.
> 
> Also don't you want to log changes of case temperature too?

yes it make sense.

> 
>> +	    (verbose > 0 && level >= 0)) {
>> +		print_temp("CPU-temp: ", temp );
>> +		if (casetemp)
>> +			print_temp(", Case: ", casetemp );
>> +		if (level >= 0)
>> +			printk(", Fan: %d (tuned %+d)\n", 11-level,
>> +				x.fan_level-level );
>> +		else
>> +			printk(", Fan: %d (tuned +0)\n",x.fan_level);
> 
> I think you can do without the "tuned +0" which doesn't add much value.

Me too. But the old driver does the same, so I preferred to 
leave it as is.

> 
>> +	}
>> +
>> +	x.temp = temp;
>> +	x.casetemp = casetemp;
>> +
>>  	if( level >= 0 )
>>  		tune_fan( level );
>>  }
> 
> 


-- 
gpg @keyserver.linux.it: Goffredo Baroncelli (kreijackATinwind.it>
Key fingerprint BBF5 1610 0B64 DAC6 5F7D  17B2 0EDA 9B37 8B82 E0B5
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