From: David Miller <davem@davemloft.net>
To: linux-kernel@vger.kernel.org
Subject: radeon breaks with clocksource_jiffies
Date: Fri, 23 Feb 2007 13:45:05 -0800 (PST) [thread overview]
Message-ID: <20070223.134505.74749340.davem@davemloft.net> (raw)
While probeing PLL information via radeon_get_pllinfo(), it does a
"gettimeofday(); do_something(); gettimeofday();" type sequence
explicitly with interrupts disabled, so ends up with a zero
measurement which then results in a bunch of divisions by zero.
We should decide whether gettimeofday() can be expected to advance with
interrupts disabled, or that clocksource_jiffies is simply invalid because
of this behavior.
next reply other threads:[~2007-02-23 21:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-23 21:45 David Miller [this message]
2007-02-23 22:03 ` David Miller
2007-02-23 22:10 ` john stultz-lkml
2007-02-23 22:32 ` David Miller
[not found] ` <1f1b08da0702231408l19207805o5555ee3ebf6bd426@mail.gmail.com>
2007-02-23 22:13 ` john stultz
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