From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] nomadik: prevent sched_clock() wraparound
Date: Wed, 17 Nov 2010 08:38:42 +0000 [thread overview]
Message-ID: <20101117083842.GA32476@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <AANLkTi=pa+oa3GXr5vfBtdrfnHpRc_2cwgBYQLJRvYXM@mail.gmail.com>
On Wed, Nov 17, 2010 at 09:34:56AM +0100, Linus Walleij wrote:
> And the Tegra code in mach-tegra/timer.c:
>
> static cycle_t tegra_clocksource_read(struct clocksource *cs)
> {
> return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US));
> }
>
> This just won't fly for long either, the mult for the clocksource is
> usually something in the order of 20.
I thought John/Thomas said that using cnt32_to_63 in there wasn't a good
idea - sounds like it needs to be killed. Colin?
next prev parent reply other threads:[~2010-11-17 8:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-16 9:11 [PATCH] nomadik: prevent sched_clock() wraparound Linus Walleij
2010-11-16 20:53 ` john stultz
2010-11-16 22:15 ` Linus Walleij
2010-11-16 22:31 ` Russell King - ARM Linux
2010-11-17 8:34 ` Linus Walleij
2010-11-17 8:38 ` Russell King - ARM Linux [this message]
2010-11-17 15:15 ` Nicolas Pitre
2010-11-17 9:26 ` Linus Walleij
2010-11-17 15:04 ` Nicolas Pitre
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