FSEC_PER_NSEC 212 arch/x86/kernel/hpet.c hpet_clockevent.mult = div_sc((unsigned long) FSEC_PER_NSEC, FSEC_PER_NSEC 360 arch/x86/kernel/hpet.c clocksource_hpet.mult = div_sc(hpet_period, FSEC_PER_NSEC, HPET_SHIFT);