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From: Mikael Pettersson <mikpe@csd.uu.se>
To: Bernard Blackham <bernard@blackham.com.au>
Cc: Pavel Machek <pavel@ucw.cz>, Shaw <shawv@comcast.net>,
	linux-kernel@vger.kernel.org
Subject: Re: Screwy clock after apm suspend
Date: Tue, 11 Jan 2005 13:36:10 +0100	[thread overview]
Message-ID: <16867.51258.916944.195917@alkaid.it.uu.se> (raw)
In-Reply-To: <20050111011611.GE4641@blackham.com.au>

Bernard Blackham writes:
 > Looking harder, in arch/i386/kernel/apm.c the system time is also
 > saved and restored in a very similar way to timer_suspend/resume.
 > Would this account for the time drift in APM mode? (sleep time being
 > accounted for twice?)

No, apm.c's update to xtime is absolute, just like time.c's.
Doing both is pointless but not harmful. (I've already tried
with apm.c's xtime update commented out, but the time-warp
bug remained.)

My 0.02 SEK says it's the jiffies update that's broken.

  parent reply	other threads:[~2005-01-11 12:36 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
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 [this message]
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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