Re: 2.6.29-rc1: thinkpad problems during resume

Pavel Machek
2009-01-16T10:43:00Z

Hi!

> >> > Please let me know if that helped.
> >>
> >> I tested rc1+ these two reverts yesterday on my T61p. Doesnt work. There must
> >> be at least one more patch that broke S2R on my thinkpad. In fact, it is cpu
> >> hotplug that is broken (unplug works).
> >
> > I reproduced that: echo 0 > online works, echo 1 > online hangs. Will
> > compile SMP-less kernel to verify that there are no more problems...
> > Pavel
> > --
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>
> I've a X61 running 32-bit and it's able to suspend-to-ram.
>
> Please see "[Bug #12422] 2.6.28-git can't resume from str" if it's
> fixes your problem. Try to pull Linus' latest tree first and you need
> apply only Rafael's latest patch.

Which patch?

Anyway, it is CPU hotplug vs. cpufreq interaction:

bash D c024ed50 0 1780 1
f71ae6b8 00000082 00000004 c024ed50 f71ae6b8 00000001 00000000
00000000
c2010db4 f71ae6b8 f71166b8 f71ae910 c201b500 00000001 c0ab4500
f5d04dd0
ffff8659 00000000 f71aeb68 00000000 00000046 00000000 c077b5c9
c2010da4
Call Trace:
[<c024ed50>] __lock_acquire+0x240/0xac0
[<c077b5c9>] rwsem_down_failed_common+0x29/0x170
[<c077b615>] rwsem_down_failed_common+0x75/0x170
[<c077b72a>] rwsem_down_write_failed+0x1a/0x30
[<c077b7a2>] call_rwsem_down_write_failed+0x6/0x8
[<c077abd5>] down_write+0x45/0x50
[<c05c0f7c>] lock_policy_rwsem_write+0x2c/0x60
[<c05c0f7c>] lock_policy_rwsem_write+0x2c/0x60
[<c05c12ea>] cpufreq_add_dev+0x1ca/0x4f0
[<c05c0988>] cpufreq_cpu_get+0xa8/0xb0
[<c05c0fdf>] cpufreq_update_policy+0x2f/0xf0
[<c0778b54>] coretemp_device_add+0xb4/0xd0
[<c0778c9f>] cpufreq_cpu_callback+0x6f/0x80
[<c02455ec>] notifier_call_chain+0x3c/0x80
[<c0245677>] raw_notifier_call_chain+0x17/0x20
[<c0776e8a>] _cpu_up+0x10a/0x110
[<c0776edb>] cpu_up+0x4b/0x70
[<c074b629>] store_online+0x59/0x80
[<c074b5d0>] store_online+0x0/0x80
[<c04220ad>] sysdev_store+0x2d/0x40
[<c02cc6d6>] sysfs_write_file+0xa6/0x100
[<c028a913>] vfs_write+0xa3/0x140
[<c02cc630>] sysfs_write_file+0x0/0x100
[<c028af61>] sys_write+0x41/0x70
[<c020323e>] syscall_call+0x7/0xb

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html