linux-kernel - sleep in microsecond granularity in linux

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Message-ID: <AANLkTinjv_cLfZfNEf0LOxXAOEUNhsJ3uzPHiRVGGTWh@mail.gmail.com>
Date:	Tue, 18 Jan 2011 17:33:34 -0600
From:	Leo Prasath <leo.prasath@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Yiying Zhang <eggbaby150@...il.com>
Subject: sleep in microsecond granularity in linux

Hi there,

Is it possible to sleep in granularity of microseconds ?
>From what i know, there is msleep() which can sleep in milliseconds
and there is udelay() which busy waits for time in microsecond
granularity.
But I need to sleep ( not busy wait ) for granularity of microseconds ...

Is there a way to code a new API in linux kernel to allow this ? For
example using interrupts ..
Or is there a way to some external hardware timer cards that issue
interrupts after certain usecs ?

Any help / pointers/ tips will be very appreciated.

Thanks,
-Leo
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