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From: "wilbur.chan" <wilbur512@gmail.com>
To: Linux MIPS Mailing List <linux-mips@linux-mips.org>
Subject: Clock Source in hrtimer
Date: Sun, 15 Aug 2010 10:13:23 +0800	[thread overview]
Message-ID: <AANLkTik5o+LsApwvkDTb7z+k=Ls60h9PJugrvM7ozO=p@mail.gmail.com> (raw)

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

             reply	other threads:[~2010-08-15  3:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-15  2:13 wilbur.chan [this message]
2010-08-15  6:14 ` Clock Source in hrtimer wu zhangjin
2010-08-15 16:00   ` wilbur.chan

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