last_count 392 arch/i386/isa/clock.c unsigned long long count, last_count; last_count 394 arch/i386/isa/clock.c __asm __volatile("rdtsc" : "=A" (last_count)); last_count 397 arch/i386/isa/clock.c cpuspeed = ((count - last_count) + 999999) / 1000000;