Suspend-Resume support in sparc64 kernel?

Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Hi,

Is there any Suspend-Resume support in the sparc64 kernel?

TIA,
Shaddy

Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Hi,

I've asked this question at the Linux power management mailing list, and 
it was recommended I ask it here 
[https://lists.linux-foundation.org/pipermail/linux-pm/2008-October/018793.html].

Basically, I've long been aware that my Ultra 10 was capable of 
supporting suspend to RAM under Solaris, and confirmed this feature 
under the name Suspend-Resume from here 
[http://docs.sun.com/app/docs/doc/805-4433/6j46udqi7?l=en&a=view&q=power+management]. 


I could find no evidence that the Linux sparc64 kernel supports this 
power management feature, nor the Auto Waking feature. Does the Linux 
sparc64 kernel support the Suspend-Resume pm function?

If not, is there some historic reason for this?

Thanks in advance,
Shaddy

Re: Suspend-Resume support in sparc64 kernel?

[David Miller]

From: Shaddy Baddah <shaddy_baddah@hotmail.com>
Date: Fri, 31 Oct 2008 22:51:59 +1100

> I could find no evidence that the Linux sparc64 kernel supports this
> power management feature, nor the Auto Waking feature. Does the
> Linux sparc64 kernel support the Suspend-Resume pm function?

No.

> If not, is there some historic reason for this?

I'm the only person working on the port and there are only
24 hours per day.

Re: Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

David Miller wrote:
>> If not, is there some historic reason for this?
> 
> I'm the only person working on the port and there are only
> 24 hours per day.

That's fair enough. Totally understand where you are coming from. It's 
an almighty effort that you've made too, because the sparc port is very 
good.

I aspire to be able to contribute, but will need to self learn kernel 
development before I am in a position to do that.

Thanks,
Shaddy

Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Hi,

Is there any Suspend-Resume support in the sparc64 kernel?

TIA,
Shaddy

Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Hi,

Is there any Suspend-Resume support in the sparc64 kernel?

TIA,
Shaddy

Re: Suspend-Resume support in sparc64 kernel?

[Rafael J. Wysocki]

On Wednesday, 29 of October 2008, Shaddy Baddah wrote:
> Hi,
> 
> Is there any Suspend-Resume support in the sparc64 kernel?

Do you mean suspend to RAM or hibernation?

Rafael

Re: Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Rafael J. Wysocki wrote:
> On Wednesday, 29 of October 2008, Shaddy Baddah wrote:
>> Hi,
>>
>> Is there any Suspend-Resume support in the sparc64 kernel?
> 
> Do you mean suspend to RAM or hibernation?

I mean suspend to RAM, which is what I believe the Suspend-Resume 
referred to in the document 
http://docs.sun.com/app/docs/doc/805-4433/6j46udqi7?l=en&a=view&q=power+management 
also refers to.

My uninformed research into it gives me an indication that it is not. 
And I'm curious as to whether there was some history to its possible 
exclusion, or it is just something that no one has ever attempt to 
implement.

Thanks in advance,
Shaddy

Re: Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Rafael J. Wysocki wrote:
> On Wednesday, 29 of October 2008, Shaddy Baddah wrote:
>> Hi,
>>
>> Is there any Suspend-Resume support in the sparc64 kernel?
> 
> Do you mean suspend to RAM or hibernation?

I mean suspend to RAM, which is what I believe the Suspend-Resume 
referred to in the document 
http://docs.sun.com/app/docs/doc/805-4433/6j46udqi7?l=en&a=view&q=power+management 
also refers to.

My uninformed research into it gives me an indication that it is not. 
And I'm curious as to whether there was some history to its possible 
exclusion, or it is just something that no one has ever attempt to 
implement.

Thanks in advance,
Shaddy

Re: Suspend-Resume support in sparc64 kernel?

[Rafael J. Wysocki]

On Wednesday, 29 of October 2008, Shaddy Baddah wrote:
> Rafael J. Wysocki wrote:
> > On Wednesday, 29 of October 2008, Shaddy Baddah wrote:
> >> Hi,
> >>
> >> Is there any Suspend-Resume support in the sparc64 kernel?
> > 
> > Do you mean suspend to RAM or hibernation?
> 
> I mean suspend to RAM, which is what I believe the Suspend-Resume 
> referred to in the document 
> http://docs.sun.com/app/docs/doc/805-4433/6j46udqi7?l=en&a=view&q=power+management 
> also refers to.
> 
> My uninformed research into it gives me an indication that it is not. 
> And I'm curious as to whether there was some history to its possible 
> exclusion, or it is just something that no one has ever attempt to 
> implement.

I think no one has ever tried it, although you should ask SPARC architecture
developers/maintainers about that.

Thanks,
Rafael

Re: Suspend-Resume support in sparc64 kernel?

[Pavel Machek]

On Wed 2008-10-29 23:51:09, Shaddy Baddah wrote:
> Rafael J. Wysocki wrote:
> > On Wednesday, 29 of October 2008, Shaddy Baddah wrote:
> >> Hi,
> >>
> >> Is there any Suspend-Resume support in the sparc64 kernel?
> > 
> > Do you mean suspend to RAM or hibernation?
> 
> I mean suspend to RAM, which is what I believe the Suspend-Resume 
> referred to in the document 
> http://docs.sun.com/app/docs/doc/805-4433/6j46udqi7?l=en&a=view&q=power+management 
> also refers to.
> 
> My uninformed research into it gives me an indication that it is not. 
> And I'm curious as to whether there was some history to its possible 
> exclusion, or it is just something that no one has ever attempt to 
> implement.

Noone every tried it, AFAICT. sparcs are big and power-hungry beasts,
so there was not real pressing need to suspend them...

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

Suspend-Resume support in sparc64 kernel?

[Shaddy Baddah]

Hi,

Is there any Suspend-Resume support in the sparc64 kernel?

TIA,
Shaddy