C++ (Cpp) pvclock_clocksource_read Examples

Example #1

File: pvclock.c Project: 03199618/linux

void pvclock_read_wallclock(struct pvclock_wall_clock *wall_clock,
			    struct pvclock_vcpu_time_info *vcpu_time,
			    struct timespec *ts)
{
	u32 version;
	u64 delta;
	struct timespec now;

	/* get wallclock at system boot */
	do {
		version = wall_clock->version;
		rmb();		/* fetch version before time */
		now.tv_sec  = wall_clock->sec;
		now.tv_nsec = wall_clock->nsec;
		rmb();		/* fetch time before checking version */
	} while ((wall_clock->version & 1) || (version != wall_clock->version));

	delta = pvclock_clocksource_read(vcpu_time);	/* time since system boot */
	delta += now.tv_sec * (u64)NSEC_PER_SEC + now.tv_nsec;

	now.tv_nsec = do_div(delta, NSEC_PER_SEC);
	now.tv_sec = delta;

	set_normalized_timespec(ts, now.tv_sec, now.tv_nsec);
}

Example #2

File: time.c Project: 325116067/semc-qsd8x50

cycle_t xen_clocksource_read(void)
{
        struct pvclock_vcpu_time_info *src;
	cycle_t ret;

	src = &get_cpu_var(xen_vcpu)->time;
	ret = pvclock_clocksource_read(src);
	put_cpu_var(xen_vcpu);
	return ret;
}

Example #3

File: time.c Project: Camedpuffer/linux

u64 xen_clocksource_read(void)
{
        struct pvclock_vcpu_time_info *src;
	u64 ret;

	preempt_disable_notrace();
	src = &__this_cpu_read(xen_vcpu)->time;
	ret = pvclock_clocksource_read(src);
	preempt_enable_notrace();
	return ret;
}

Example #4

File: time.c Project: openube/android_kernel_sony_c2305

cycle_t xen_clocksource_read(void)
{
        struct pvclock_vcpu_time_info *src;
	cycle_t ret;

	preempt_disable_notrace();
	src = &__get_cpu_var(xen_vcpu)->time;
	ret = pvclock_clocksource_read(src);
	preempt_enable_notrace();
	return ret;
}