From: Andi Kleen <andi@firstfloor.org>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Simon Arlott <simon@fire.lp0.eu>,
linux-kernel@vger.kernel.org, dwalker@mvista.com
Subject: Re: [patch 0/3] fastboot patches series 1
Date: Sat, 19 Jul 2008 12:22:43 +0200 [thread overview]
Message-ID: <87tzem8970.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20080718221630.2809abbd@infradead.org> (Arjan van de Ven's message of "Fri, 18 Jul 2008 22:16:30 -0700")
Arjan van de Ven <arjan@infradead.org> writes:
>
> One possible theory is that we now run on both cpus and if they're out
> of sync timewise, things like delays suddenly are shorter than expected
> if time jumps around....
On systems with non synchronized TSC the clocksource watchdog tends
to disable the TSC time source only quite late in boot (on my systems
typically even after kernel boot). So yes this could be a problem.
However he has a AMD QC system where the TSCs are synchronized on the
hardware level and there's also no message from the watchdog disabling
TSC, so this isn't the problem causing this issue. Must be something else.
-Andi
next prev parent reply other threads:[~2008-07-19 10:24 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-18 22:15 [patch 0/3] fastboot patches series 1 Arjan van de Ven
2008-07-18 22:16 ` [patch 1/3] fastboot: Create a "asynchronous" initlevel Arjan van de Ven
2008-07-19 1:22 ` Daniel Walker
2008-07-19 3:44 ` Arjan van de Ven
2008-07-19 4:11 ` Daniel Walker
2008-07-19 4:58 ` Arjan van de Ven
2008-07-19 5:20 ` Arjan van de Ven
2008-07-19 15:24 ` Daniel Walker
2008-07-19 15:35 ` Arjan van de Ven
2008-07-19 16:08 ` Daniel Walker
2008-07-19 16:14 ` Arjan van de Ven
2008-07-19 4:28 ` Daniel Walker
2008-07-19 7:53 ` Rene Herman
2008-07-19 8:10 ` Rene Herman
2008-07-19 15:44 ` Arjan van de Ven
2008-07-20 7:23 ` Rene Herman
2008-07-20 11:10 ` Arjan van de Ven
2008-07-20 14:20 ` Rene Herman
2008-07-20 15:35 ` Arjan van de Ven
2008-07-18 22:16 ` [patch 2/3] fastboot: turn the USB hostcontroller initcalls into async initcalls Arjan van de Ven
2008-07-18 22:17 ` [patch 3/3] fastboot: convert a few non-critical ACPI drivers to " Arjan van de Ven
2008-07-19 4:51 ` [patch 0/3] fastboot patches series 1 Simon Arlott
2008-07-19 5:16 ` Arjan van de Ven
2008-07-19 5:47 ` Simon Arlott
2008-07-19 10:22 ` Andi Kleen [this message]
2008-07-20 8:31 ` Ingo Molnar
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