timer: Added usleep[_range] timer

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usleep[_range] are finer precision implementations of msleep
and are designed to be drop-in replacements for udelay where
a precise sleep / busy-wait is unnecessary. They also allow
an easy interface to specify slack when a precise (ish)
wakeup is unnecessary to help minimize wakeups

Signed-off-by: Patrick Pannuto <ppannuto@codeaurora.org>
Cc: akinobu.mita@gmail.com
Cc: sboyd@codeaurora.org
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
LKML-Reference: <4C44CDD2.1070708@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Patrick Pannuto 2010-07-19 15:09:26 -07:00 • committed by Thomas Gleixner

parent 866e26115c

commit 22b8f15c2f

2 changed files with 28 additions and 0 deletions

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6

include/linux/delay.h

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22

kernel/timer.c

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