Esempio n. 1
0
File: timer.c Progetto: 08opt/linux
/* Overwrite weak default sched_clock with more precise one */
unsigned long long notrace sched_clock(void)
{
	static int is_mapped;

	/*
	 * sched_clock is called earlier than .init of sys_timer
	 * if we map timer memory in .init of sys_timer, system
	 * will panic due to illegal memory access
	 */
	if (!is_mapped) {
		sirfsoc_of_timer_map();
		is_mapped = 1;
	}

	return sirfsoc_timer_read(NULL) * (NSEC_PER_SEC / CLOCK_TICK_RATE);
}
Esempio n. 2
0
/* Overwrite weak default sched_clock with more precise one */
static u64 notrace sirfsoc_read_sched_clock(void)
{
    return sirfsoc_timer_read(NULL);
}