Get current time in seconds in kernel module

Question

What is the standard way to get the current time in seconds (since the epoch) in a kernel module?

I have seen techniques involving getting xtime which are very long-

Answer 1

You can use getnstimeofday for that.

/* getnstimeofday - Returns the time of day in a timespec */
void getnstimeofday(struct timespec *ts)

where struct timespec is:

struct timespec {
    time_t  tv_sec;     /* seconds */
    long    tv_nsec;    /* nanoseconds */
};

And yes, you'll need #include <linux/time.h>.