/* * SPDX-License-Identifier: GPL-2.0+ */#ifndef _TIME_H#define _TIME_Hunsigned longget_timer(unsigned long base);/* * Return the current value of a monotonically increasing microsecond timer. * Granularity may be larger than 1us if hardware does not support this. */unsigned longtimer_get_us(void);#endif/* _TIME_H */