示例#1
0
static void __init arch_counter_register(unsigned type)
{
	u64 start_count;

	/* Register the CP15 based counter if we have one */
	if (type & ARCH_CP15_TIMER) {
		if (IS_ENABLED(CONFIG_ARM64) || arch_timer_use_virtual)
			arch_timer_read_counter = arch_counter_get_cntvct;
		else
			arch_timer_read_counter = arch_counter_get_cntpct;
	} else {
		arch_timer_read_counter = arch_counter_get_cntvct_mem;

		/* If the clocksource name is "arch_sys_counter" the
		 * VDSO will attempt to read the CP15-based counter.
		 * Ensure this does not happen when CP15-based
		 * counter is not available.
		 */
		clocksource_counter.name = "arch_mem_counter";
	}

	start_count = arch_timer_read_counter();
	clocksource_register_hz(&clocksource_counter, arch_timer_rate);
	cyclecounter.mult = clocksource_counter.mult;
	cyclecounter.shift = clocksource_counter.shift;
	timecounter_init(&timecounter, &cyclecounter, start_count);

	/* 56 bits minimum, so we assume worst case rollover */
	sched_clock_register(arch_timer_read_counter, 56, arch_timer_rate);
}
示例#2
0
static void __init arch_counter_register(unsigned type)
{
	u64 start_count;

	/* Register the CP15 based counter if we have one */
	if (type & ARCH_CP15_TIMER)
		arch_timer_read_counter = arch_counter_get_cntvct_cp15;
	else
		arch_timer_read_counter = arch_counter_get_cntvct_mem;

	start_count = arch_timer_read_counter();
	clocksource_register_hz(&clocksource_counter, arch_timer_rate);
	cyclecounter.mult = clocksource_counter.mult;
	cyclecounter.shift = clocksource_counter.shift;
	timecounter_init(&timecounter, &cyclecounter, start_count);
}
示例#3
0
static void __init arch_counter_register(unsigned type)
{
	u64 start_count;

	/* Register the CP15 based counter if we have one */
	if (type & ARCH_CP15_TIMER)
		arch_timer_read_counter = arch_counter_get_cntvct_cp15;
	else
		arch_timer_read_counter = arch_counter_get_cntvct_mem;

	start_count = arch_timer_read_counter();
	clocksource_register_hz(&clocksource_counter, arch_timer_rate);
	cyclecounter.mult = clocksource_counter.mult;
	cyclecounter.shift = clocksource_counter.shift;
	timecounter_init(&timecounter, &cyclecounter, start_count);

	/* 56 bits minimum, so we assume worst case rollover */
	sched_clock_register(arch_timer_read_counter, 56, arch_timer_rate);
}
示例#4
0
static void __init arch_counter_register(unsigned type)
{
	u64 start_count;

	/* Register the CP15 based counter if we have one */
	if (type & ARCH_CP15_TIMER) {
		if (IS_ENABLED(CONFIG_ARM64) || arch_timer_uses_ppi == VIRT_PPI)
			arch_timer_read_counter = arch_counter_get_cntvct;
		else
			arch_timer_read_counter = arch_counter_get_cntpct;

		clocksource_counter.archdata.vdso_direct = true;

#ifdef CONFIG_FSL_ERRATUM_A008585
		/*
		 * Don't use the vdso fastpath if errata require using
		 * the out-of-line counter accessor.
		 */
		if (static_branch_unlikely(&arch_timer_read_ool_enabled))
			clocksource_counter.archdata.vdso_direct = false;
#endif
	} else {
		arch_timer_read_counter = arch_counter_get_cntvct_mem;
	}

	if (!arch_counter_suspend_stop)
		clocksource_counter.flags |= CLOCK_SOURCE_SUSPEND_NONSTOP;
	start_count = arch_timer_read_counter();
	clocksource_register_hz(&clocksource_counter, arch_timer_rate);
	cyclecounter.mult = clocksource_counter.mult;
	cyclecounter.shift = clocksource_counter.shift;
	timecounter_init(&arch_timer_kvm_info.timecounter,
			 &cyclecounter, start_count);

	/* 56 bits minimum, so we assume worst case rollover */
	sched_clock_register(arch_timer_read_counter, 56, arch_timer_rate);
}
示例#5
0
static u64 arch_counter_read_cc(const struct cyclecounter *cc)
{
	return arch_timer_read_counter();
}
示例#6
0
static u64 arch_counter_read(struct clocksource *cs)
{
	return arch_timer_read_counter();
}
示例#7
0
static notrace u32 arch_timer_read_counter_u32(void)
{
	return arch_timer_read_counter();
}
示例#8
0
static unsigned long arch_timer_read_counter_long(void)
{
	return arch_timer_read_counter();
}
示例#9
0
u64 arch_counter_get_cntvct(void)
{
	return arch_timer_read_counter();
}