From: Pavel Machek <pavel@suse.cz>
To: bernard@blackham.com.au
Cc: Shaw <shawv@comcast.net>, linux-kernel@vger.kernel.org
Subject: Re: Screwy clock after apm suspend
Date: Mon, 10 Jan 2005 11:57:59 +0100 [thread overview]
Message-ID: <20050110105759.GM1353@elf.ucw.cz> (raw)
In-Reply-To: <20050110074422.GA17710@mussel>
Hi!
> > > Probably code to compensate clock after ACPI suspend breaks apm case
> > >
> > > arch/i386/kernel/time.c, can you comment out
> > > jiffies += sleep_length * HZ;
> > >
> > > in timer_resume to see if it goes away?
> >
> > Worked like a charm. I'm not seeing any time drift after your suggested
> > change.
>
> AIUI, this also means that a machine's uptime does not include time
> whilst suspended. This was the behaviour prior to 2.6.10 and seems to be
> more desirable as it counts the time the machine is actually running,
> not just time since boot. Is there a good reason why we can't go back to
> this?
I think it means very wrong system clock in ACPI state. Plus think
something wanting timeout of five minutes, then suspend one minute
after, machine sleeps for a hour.
With this approach, timeout should happen just after resume, with your
approach, it would wait 4 more minutes.
[Perhaps it needs to call lost_ticks or something like that.]
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
next prev parent reply other threads:[~2005-01-10 10:58 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-07 18:08 Screwy clock after apm suspend Shaw
2005-01-09 22:47 ` Pavel Machek
2005-01-10 2:15 ` Alex Romosan
2005-01-10 7:28 ` Shaw
2005-01-10 7:44 ` bernard
2005-01-10 10:57 ` Pavel Machek [this message]
2005-01-10 17:48 ` Bernard Blackham
2005-01-11 0:14 ` Pavel Machek
2005-01-11 1:10 ` Nigel Cunningham
2005-01-11 3:12 ` Pavel Machek
2005-01-11 1:16 ` Bernard Blackham
2005-01-11 3:21 ` Pavel Machek
2005-01-11 12:36 ` Mikael Pettersson
2005-01-11 13:10 ` Pavel Machek
2005-01-11 14:15 ` Mikael Pettersson
2005-01-11 20:18 ` Pavel Machek
2005-01-11 3:13 ` Stephen Rothwell
2005-01-11 3:19 ` Pavel Machek
2005-01-11 12:32 ` Mikael Pettersson
-- strict thread matches above, loose matches on Subject: below --
2005-01-15 18:30 Mikael Pettersson
2005-01-16 19:47 ` Alex Romosan
2004-12-29 11:38 Mikael Pettersson
2005-01-03 17:34 ` Pavel Machek
2004-12-29 0:29 Brannon Klopfer
2004-12-29 1:18 ` Nigel Cunningham
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