Re: CVS commit: src/sys/dev/acpi

[David Young <dyoung%pobox.com@localhost>]

On Wed, Apr 08, 2009 at 07:19:58PM +0000, Andrew Doran wrote:
> On Wed, Apr 08, 2009 at 12:15:45AM +0000, David Young wrote:
> 
> > Modified Files:
> >     src/sys/dev/acpi: acpi_timer.c acpi_timer.h
> > 
> > Log Message:
> > Add acpitimer_detach() to eventually support acpi(4) detachment.
> 
> tc_detach() does not work correctly on a running system. It can race with
> binuptime(), so the timecounter may still be in use when it is destroyed.
> 
> One solution would be to use the passive serialization patch that I posted
> to tech-kern@. I believe rmind@ is working on it.

Thanks, I will have a look at this problem and the solution that you
suggest.  I hope that the passive serialization patch will hit the tree
before/if I need it.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933