From: Ben Collins <ben.collins@ubuntu.com>
To: jeff shia <tshxiayu@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: something about jiffies wraparound overflow
Date: Tue, 27 Dec 2005 09:54:45 -0500 [thread overview]
Message-ID: <1135695285.31669.2.camel@localhost.localdomain> (raw)
In-Reply-To: <7cd5d4b40512262046w6f7a8161jfaf1e618e5722b4@mail.gmail.com>
On Tue, 2005-12-27 at 12:46 +0800, jeff shia wrote:
> 1.why the macros of time_after can solve the jiffies wraparound problem?
Basically it assumes that the two values you are comparing will never be
more than MAX_ULONG/2 apart. Which for jiffies means 270 some odd days
on 32-bit platforms.
--
Ben Collins <ben.collins@ubuntu.com>
Developer
Ubuntu Linux
next prev parent reply other threads:[~2005-12-27 14:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-27 4:46 something about jiffies wraparound overflow jeff shia
2005-12-27 8:54 ` lk
2005-12-27 9:05 ` Con Kolivas
2005-12-27 14:54 ` Ben Collins [this message]
[not found] <5oeWK-5Od-11@gated-at.bofh.it>
2005-12-27 10:06 ` Bodo Eggert
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