svn commit: r277796 - in head/sys: dev/acpica dev/syscons dev/vt sys

[Ivan Klymenko]

В Tue, 27 Jan 2015 17:33:19 +0000 (UTC)
Andriy Gapon <avg at FreeBSD.org> пишет:

> Author: avg
> Date: Tue Jan 27 17:33:18 2015
> New Revision: 277796
> URL: https://svnweb.freebsd.org/changeset/base/277796
> 
> Log:
>   hook userland threads suspend + resume into acpi suspend code
>   
>   Also, split power_suspend into power_suspend and
> power_suspend_early. 
>   power_suspend_early is called before the userland is frozen.
>   power_suspend is called after the userland is frozen.
>   
>   Currently only VT switching is hooked to power_suspend_early.
>   This is needed because switching away from X server requires its
>   cooperation, so obviously X server must not be frozen when that
> happens. 
>   Freezing userland during ACPI suspend is useful because not all
> drivers correctly handle suspension concurrent with other activity.
> This is especially applicable to drivers ported from other operating
> systems that suspend all software activity between placing drivers
> and hardware into suspended state.
>   In particular drm2/radeon (radeonkms) depends on the described
>   procedure.  The driver does not have any internal synchronization
>   between suspension activities and processing of userland requests.
>   
>   Many thanks to kib for the code that allows to freeze and thaw all
>   userland threads.
>   
>   Note that ideally we also need to park / inhibit (non-special)
> kernel threads as well to ensure that they do not call into drivers.
>   
>   MFC after:	17 days
> 

Thank you for your work!

acpiconf -s 3 works perfectly, but there is one problem.
I use not the main timecounter
kern.timecounter.hardware=HPET
after turning on the power button does not occur laptop recovery hdac0
and it is likely that the same applies to the timer.
Indirect evidence of this - it's a quick video playback, for example in
flash on YouTube.

dmesg_first : http://pastebin.com/a4gC5PGy
dmesg_afterS3 : http://pastebin.com/vyHtrakZ

my HW:

pciconf -lvbce :
https://bz-attachments.freebsd.org/attachment.cgi?id=148947
devinfo -vr :
https://bz-attachments.freebsd.org/attachment.cgi?id=148948

Thanks.