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From: Milan Broz <mbroz@redhat.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Thomas Meyer <thomas@m3y3r.de>,
	linux-kernel@vger.kernel.org, Pavel Machek <pavel@ucw.cz>
Subject: Re: SwSusp to disk doesn't work - Try 2
Date: Sun, 11 Mar 2007 20:04:02 +0100	[thread overview]
Message-ID: <45F452A2.2050009@redhat.com> (raw)
In-Reply-To: <200703111926.20183.rjw@sisk.pl>

Rafael J. Wysocki napsal(a):
> On Sunday, 11 March 2007 19:08, Thomas Meyer wrote:
>> Suspend to disk doesn't work on my laptop.
>>
>> The suspend seems to hang while enabling the non-boot cpus again.
>>
>> with platform = "test" and state = "disk" i get this:

>> Enabling non-boot CPUs ...
...
> 
> Could you please put some printk()s in kernel/cpu.c:_cpu_up() to see where
> it gets stuck?  I bet one of the notifiers goes to sleep (cpufreq, maybe).

Hi,
I see the same problem - 2.6.21-rc3 with NO_HZ set (tickless), 
short printk trace 

enable_nonboot_cpus
 _cpu_up
  raw_notifier_callchain (CPU_UP_PREPARE)
    ...
    update_sched_domains
     detach_destroy_domains
       [waits here] --> synchronize_sched (==synchronize_rcu)


Milan



  parent reply	other threads:[~2007-03-11 19:04 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-11 18:08 SwSusp to disk doesn't work - Try 2 Thomas Meyer
2007-03-11 18:26 ` Rafael J. Wysocki
2007-03-11 18:37   ` Thomas Meyer
2007-03-11 19:27     ` Rafael J. Wysocki
2007-03-11 19:04   ` Milan Broz [this message]
2007-03-11 19:16     ` Thomas Meyer
2007-03-11 19:50       ` Rafael J. Wysocki
2007-03-11 20:04         ` Thomas Meyer
2007-03-11 19:38     ` Rafael J. Wysocki
2007-03-11 20:23       ` Milan Broz
2007-03-11 20:32         ` Rafael J. Wysocki
2007-03-11 20:28           ` Thomas Meyer
2007-03-11 20:45             ` Rafael J. Wysocki
2007-03-11 20:49               ` Thomas Meyer
2007-03-11 20:57             ` Milan Broz
2007-03-11 21:02               ` Thomas Meyer
2007-03-11 21:09               ` Rafael J. Wysocki
2007-03-11 21:56                 ` Thomas Gleixner
2007-03-11 21:57                   ` Thomas Meyer

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