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 ?