1ROUND_JIFFIES_RELATI(9)          Driver Basics         ROUND_JIFFIES_RELATI(9)
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NAME

6       round_jiffies_relative - function to round jiffies to a full second
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SYNOPSIS

9       unsigned long round_jiffies_relative(unsigned long j);
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ARGUMENTS

12       j
13           the time in (relative) jiffies that should be rounded
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DESCRIPTION

16       round_jiffies_relative rounds a time delta in the future (in jiffies)
17       up or down to (approximately) full seconds. This is useful for timers
18       for which the exact time they fire does not matter too much, as long as
19       they fire approximately every X seconds.
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21       By rounding these timers to whole seconds, all such timers will fire at
22       the same time, rather than at various times spread out. The goal of
23       this is to have the CPU wake up less, which saves power.
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25       The return value is the rounded version of the j parameter.
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28Kernel Hackers Manual 2.6.       November 2011         ROUND_JIFFIES_RELATI(9)
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