linux-kernel - Re: jiffies got lost because of printk

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Message-ID: <63386a3d0907140823s62140f85t7947a8ebe02382e9@mail.gmail.com>
Date:	Tue, 14 Jul 2009 17:23:47 +0200
From:	Linus Walleij <linus.ml.walleij@...il.com>
To:	林建安 <colin@...ltek.com.tw>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: jiffies got lost because of printk

2009/7/14 林建安 <colin@...ltek.com.tw>:

> We found that system time is not synced with RTC time on our embedded
> system. (...)
> interrupt will be disabled for more than 1 HZ and timer interrupt will be
> lost.

This sounds like you're using some kind of old timekeeping code.
Make sure you migrate to using a proper time source and clock
events. It will compensate for lost jiffies in situations like this.

Linus Walleij
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