ticks             140 kernel/defs.h  extern uint     ticks;
ticks              77 kernel/sysproc.c   ticks0 = ticks;
ticks              78 kernel/sysproc.c   while(ticks - ticks0 < n){
ticks              83 kernel/sysproc.c     sleep(&ticks, &tickslock);
ticks             106 kernel/sysproc.c   xticks = ticks;
ticks              10 kernel/trap.c  uint ticks;
ticks             169 kernel/trap.c      ticks++;
ticks             170 kernel/trap.c      wakeup(&ticks);