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Date:   Sun, 15 Aug 2010 10:13:23 +0800
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Subject: Clock Source in hrtimer
From:   "wilbur.chan" <wilbur512@gmail.com>
To:     Linux MIPS Mailing List <linux-mips@linux-mips.org>
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I am planning to use  linux 2.6.24  with hrtimer enabled and with
CONFIG_NO_HZ  on mips xlr 732.


As we know, a   monotomic increasing Clock Source is required to
support hrtimer,  whose cycles could be retrieved  from
clocksource->read function.

However  on  xlr 732 ,there is only a 32 bits counter register, which
would overflow in 4s ( 2^32 / 1GHZ = 4).

How to solve this ?


Thanks in advance