From: Johannes Berg <johannes@sipsolutions.net>
To: Gabriel Paubert <paubert@iram.es>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH 2/3] powermac: proper time of day after resume
Date: Thu, 25 Jan 2007 13:54:05 +0100 [thread overview]
Message-ID: <1169729645.19614.1.camel@johannes.berg> (raw)
In-Reply-To: <20070125110951.GA31911@iram.es>
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On Thu, 2007-01-25 at 12:09 +0100, Gabriel Paubert wrote:
> If we did suspend the machines to save power, the only solution
> would be to tell NTP to synchronize with the master clock by
> stepping the time (not slewing) at resume time.
You also know that you have such a requirement, and obviously also know
what you could do to fix it.
I see this as a non-issue. Even if we *try* to sync with the second
transition (which is likely rather hard to do) then we won't have the
required precision for a bunch of applications, so it's futile to try it
anyway.
Besides, if we don't do it at all the time just keeps running where it
was before suspend...
johannes
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next prev parent reply other threads:[~2007-01-25 12:55 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-13 12:38 [PATCH 0/3] some preparations for suspend on G5 powermac Johannes Berg
2006-12-13 12:38 ` [PATCH 1/3] windfarm: dont die on suspend thread signal Johannes Berg
2007-01-24 6:32 ` Benjamin Herrenschmidt
2006-12-13 12:38 ` [PATCH 2/3] powermac: proper time of day after resume Johannes Berg
2007-01-24 6:34 ` Benjamin Herrenschmidt
2007-01-24 8:46 ` Johannes Berg
2007-01-24 8:51 ` Benjamin Herrenschmidt
2007-01-24 8:54 ` Gabriel Paubert
2007-01-24 9:32 ` Benjamin Herrenschmidt
2007-01-24 10:36 ` Gabriel Paubert
2007-01-24 14:23 ` Segher Boessenkool
2007-01-24 21:44 ` Benjamin Herrenschmidt
2007-01-24 22:24 ` Segher Boessenkool
2007-01-24 22:35 ` Benjamin Herrenschmidt
2007-01-24 23:21 ` Segher Boessenkool
2007-01-25 7:39 ` Michel Dänzer
2007-01-25 8:06 ` Benjamin Herrenschmidt
2007-01-25 8:10 ` Michel Dänzer
2007-01-25 11:09 ` Gabriel Paubert
2007-01-25 12:54 ` Johannes Berg [this message]
2007-01-26 14:35 ` Johannes Berg
2007-02-01 19:16 ` [PATCH] " Johannes Berg
2007-02-02 12:19 ` Johannes Berg
2007-02-03 2:41 ` Michael Ellerman
2007-02-03 17:37 ` Johannes Berg
2007-05-02 4:45 ` Paul Mackerras
2007-05-02 4:47 ` Paul Mackerras
2007-05-02 8:26 ` Johannes Berg
2007-05-02 14:25 ` [PATCH] powerpc timer sysdev: use mktime Johannes Berg
2007-05-23 15:28 ` Johannes Berg
2007-05-28 4:33 ` Paul Mackerras
2006-12-13 12:38 ` [PATCH 3/3] powerpc: fix comment in kernel/irq.c Johannes Berg
2006-12-13 13:13 ` Johannes Berg
2006-12-19 5:40 ` Paul Mackerras
2006-12-19 18:29 ` Johannes Berg
2007-01-24 6:35 ` Benjamin Herrenschmidt
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