ovs/datapath/linux/compat/time.c

#include <linux/time.h>

#include <linux/version.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)

/* "set_normalized_timespec" is defined but not exported in kernels
 * before 2.6.26. */

/**
 * set_normalized_timespec - set timespec sec and nsec parts and normalize
 *
 * @ts:         pointer to timespec variable to be set
 * @sec:        seconds to set
 * @nsec:       nanoseconds to set
 *
 * Set seconds and nanoseconds field of a timespec variable and
 * normalize to the timespec storage format
 *
 * Note: The tv_nsec part is always in the range of
 *      0 <= tv_nsec < NSEC_PER_SEC
 * For negative values only the tv_sec field is negative !
 */
void set_normalized_timespec(struct timespec *ts,
                   time_t sec, long nsec)
{
	while (nsec >= NSEC_PER_SEC) {
		nsec -= NSEC_PER_SEC;
		++sec;
	}
	while (nsec < 0) {
		nsec += NSEC_PER_SEC;
		--sec;
	}
	ts->tv_sec = sec;
	ts->tv_nsec = nsec;
}

#endif /* linux kernel < 2.6.26 */