The Linux kernel maintains a global variable called jiffies, which represents the
number of timer ticks since the
machine started. This variable is initialized to
zero and increments each timer interrupt.
The jiffies global and associated functions are provided in ./linux/include/linux/jiffies.h.
asmlinkage long
sys_getjiffies(
void )
{
return (long)get_jiffies_
64();
}
do you know your jiffer ?