On 07/18/2017 10:50 AM, Joe Perches wrote:

On Thu, 2017-06-08 at 16:47 +0300, Andy Shevchenko wrote:

quoted

Recently I have noticed too many users of struct rtc_time that printing
its content field by field.

In this series I introduce %pt[dt][rv] specifier to make life a bit
easier.

Hey Andy.

I just saw a patch with a printk for rtc time from Mark Salyzyn.
https://lkml.org/lkml/2017/7/18/885

Any idea if you want to push this extension?

I like the concept and still think it could be extended a bit more.

from: https://lkml.org/lkml/2017/6/8/1134

My preference would be for %pt[type]<output style>
where <type> is mandatory and could be:

         r for struct rtc_time
         6 for time64_t
         k for ktime_t
         T for struct timespec64
         etc

and <output style> has an unspecified default of
YYYY-MM-DD:hh:mm:ss

Perhaps use the "date" formats without the leading
% uses for <output style> for additional styles.

YYYY-MM-DD hh:mm:ss.nnnnnnnnn ?