round_jiffies_up_relative - function to round jiffies up to a full second
unsigned long round_jiffies_up_relative(unsigned long j);
This is the same as round_jiffies_relative 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.
|January 2017||Kernel Hackers Manual 4.8.|