Re: [PATCH 1/6] Hibernation: Introduce new system state for thelast phase of hibernation

[Arjan van de Ven]

On Fri, 3 Oct 2008 13:27:18 +0200
"Rafael J. Wysocki" <rjw@xxxxxxx> wrote:

> On Friday, 3 of October 2008, Andrew Morton wrote:
> > On Tue, 30 Sep 2008 00:10:37 +0200 "Rafael J. Wysocki"
> > <rjw@xxxxxxx> wrote:
> > 
> > > Hibernation: Introduce new system state for the last phase of
> > > hibernation
> > > 
> > > Replace unused SYSTEM_SUSPEND_DISK with a new system_state value
> > > SYSTEM_HIBERNATE_ENTER that can be used by device drivers to
> > > check if the system is in the last phase of hibernation.
> > 
> > Violent objections.
> > 
> > We just don't know what this change will do.  It potentially affects
> > every code site in the kernel which looks at system_state.
> 
> Do you mean anyone checking 'system_state != SOMETHING' ?  Oh well.

I think Andrew also means things looking for system_state > something
like

arch/powerpc/platforms/cell/smp.c:      if (system_state < SYSTEM_RUNNING &&
arch/powerpc/kernel/smp.c:      if (system_state < SYSTEM_RUNNING)
arch/powerpc/kernel/smp.c:      if (system_state > SYSTEM_BOOTING)
drivers/xen/xenbus/xenbus_probe.c:      if (system_state > SYSTEM_RUNNING) {


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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