From: Dave Jones <davej@redhat.com>
To: jeff shia <tshxiayu@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: do we still need the jiffies wraparound functions ?
Date: Mon, 26 Dec 2005 23:04:52 -0500 [thread overview]
Message-ID: <20051227040452.GA27781@redhat.com> (raw)
In-Reply-To: <7cd5d4b40512261932v12149210u52cf97c4bc203871@mail.gmail.com>
On Tue, Dec 27, 2005 at 11:32:41AM +0800, jeff shia wrote:
> Hello,
>
> Under the kernel 2.6.x,the jiffies is defined as u64.We cannot count
> on it to overflow.
You can guarantee it will overflow within a few minutes of booting.
This is done deliberatly to catch jiffy-wrap bugs.
> Do we still need the functions to solve this problem?
yes.
Dave
prev parent reply other threads:[~2005-12-27 4:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-27 3:32 do we still need the jiffies wraparound functions ? jeff shia
2005-12-27 4:02 ` Tim Schmielau
2005-12-27 4:04 ` Dave Jones [this message]
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