rdtsc

Name:dtsc() - returns the current TSC without ordering constraints* rdtsc() returns the result of RDTSC as a 64-bit integer

Proto:static __always_inline unsigned long long rdtsc(void)

Type:unsigned long long

Parameter:Nothing

203

Using 64-bit values saves one instruction clearing the high half of low (val, low, high)

205

asm volatile

207

Return EAX_EDX_VAL(val, low, high)

**Caller**
Name	Describe
read_current_timer
kaslr_get_random_long
init_espfix_random
cyc2ns_init_boot_cpu	Initialize cyc2ns for boot cpu
native_sched_clock	Scheduler clock - returns current time in nanosec units.
init_amd_k6
machine_check_poll	Poll for corrected events or events that happened before reset.* Those are just logged through /dev/mcelog.* This is executed in standard interrupt context.* Note: spec recommends to panic for fatal unsignalled* errors here
do_machine_check	The actual machine check handler. This only handles real* exceptions when something got corrupted coming in through int 18.* This is executed in NMI context not subject to normal locking rules. This* implies that most kernel services cannot be safely used
__log_error
apei_mce_report_mem_error
lapic_next_deadline
lapic_cal_handler	Temporary interrupt handler and polled calibration function.
calibrate_APIC_clock
delay_with_tsc
hpet_counting
apbt_clocksource_register
apbt_quick_calibrate	alled before apb_timer_enable, use early map
get_cycles

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