__round_jiffies_up — function to round jiffies up to a full second
| unsigned long __round_jiffies_up ( | unsigned long j, | 
| int cpu ); | 
jthe time in (absolute) jiffies that should be rounded
cputhe processor number on which the timeout will happen
   This is the same as __round_jiffies except that it will never
   round down.  This is useful for timeouts for which the exact time
   of firing does not matter too much, as long as they don't fire too
   early.