printing logs in kernel mode

["siddhesh divekar" <siddhesh.divekar@xxxxxxxxx>]

Hi, 
I am adding some logs in the kernel code and want them to be written to some file.
Can I achieve this using kprint ?
How do I open a file in kernel mode, 
also which time function should be used to get the current time in the logs.

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Thank You,
Siddhesh M. Divekar.