linux-kernel - Re: [PATCH]drivers:base:power:trace.c Add "UTC" Coordinated Universal Time to the printk.

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Message-ID: <4DF4E0CB.4090900@gmail.com>
Date:	Sun, 12 Jun 2011 08:52:43 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Len Brown <lenb@...nel.org>
Subject: Re: [PATCH]drivers:base:power:trace.c Add "UTC" Coordinated Universal
 Time to the printk.

On 06/12/2011 05:12 AM, Rafael J. Wysocki wrote:
> Hi,
>
> On Thursday, June 09, 2011, Justin P. Mattock wrote:
>> From: "Justin P. Mattock"<justinmattock@...il.com>
>>
>> sounds stupid, but taking a glance at the time, and seeing the wrong time, or what seemed
>> wrong in dmesg, caused me to go into total check the time clock panic mode.. So the patch below adds:
>> "UTC" Coordinated Universal Time abreviation to the printk so people like me dont flip out over the time!
>>
>> before:
>> [    0.114915] Time:  1:47:03  Date: 06/09/11
>>
>> after:
>> [    0.114728] Time:  5:46:02 UTC Date: 06/09/11
>>
>> Signed-off-by: Justin P. Mattock<justinmattock@...il.com>
>
> I suspect the goal is to mark messages printed by the PM trace code so that
> they can be easily distinguished from messages from other sources to avoid
> confusion.  Why do you think it's a good idea to use the "UTC" string for
> this purpose?  The time printed in those messages need not be UTC.
>
> It would be better to simply print "RTC time: ..., date: ..." IMO.
>
> Thanks,
> Rafael
>

well.. if thats better, then thats better.. over here(people that dont 
know what RTC time is) would not get so confused with a simple UTC or 
PDT or whatever the time zone is but if RTC is bettr, then its better.

>
>> ---
>>   drivers/base/power/trace.c |    2 +-
>>   1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
>> index c80e138..009f459 100644
>> --- a/drivers/base/power/trace.c
>> +++ b/drivers/base/power/trace.c
>> @@ -112,7 +112,7 @@ static unsigned int read_magic_time(void)
>>   	unsigned int val;
>>
>>   	get_rtc_time(&time);
>> -	pr_info("Time: %2d:%02d:%02d  Date: %02d/%02d/%02d\n",
>> +	pr_info("Time: %2d:%02d:%02d UTC Date: %02d/%02d/%02d\n",
>>   		time.tm_hour, time.tm_min, time.tm_sec,
>>   		time.tm_mon + 1, time.tm_mday, time.tm_year % 100);
>>   	val = time.tm_year;				/* 100 years */
>>
>
>

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