linux-kernel - Resume does not work after timekeeping change

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Message-ID: <5172B86C.5030606@suse.cz>
Date:	Sat, 20 Apr 2013 17:46:52 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <john.stultz@...aro.org>,
	Linux-pm mailing list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Resume does not work after timekeeping change

Hi,

my machine does not wake from suspend to RAM on my box running the -next
kernel. The last thing I see is "Disabling non-boot CPUs ...". I
bisected it to this commit:

commit 7ec98e15aa049b7a2ca73485f31cf4f90c34e2dd
Author: Thomas Gleixner <tglx@...utronix.de>
Date:   Thu Feb 21 22:51:39 2013 +0000

    timekeeping: Delay update of clock->cycle_last

Reverting that one on the top of -next-20130419 makes it work again.

I also tried it inside a VM using suspend to disk. There, it behaves
like it takes a minute or so to wake up. So I tried to wait on the real
HW too, but it never resumes there.

regards,
-- 
js
suse labs
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