linux-cr ported to 3.1

linux-cr ported to 3.1

[Adrian Reber]

I  have ported the linux-cr patches from www.linux-cr.org/pub/git/linux-cr.git
to the latest kernel (3.1). What I have tested so far it still seems to work.

Can anybody tell me what the latest state of these patches was?
Development seemed to have stopped after 2.6.37 and with the wiki[1] being
down I do not know if anybody is still working on these patches. What
was the latest status about those patches being integrated into
mainline? Is someone still trying to get it included?

Here is my git tree with all the patches on top of 3.1.

http://lisas.de/~adrian/linux-cr.git

		Adrian

[1] http://ckpt.wiki.kernel.org/

Re: linux-cr ported to 3.1

[Serge E. Hallyn]

Quoting Adrian Reber (adrian-5+Cda9B46AM@public.gmane.org):
> 
> I  have ported the linux-cr patches from www.linux-cr.org/pub/git/linux-cr.git
> to the latest kernel (3.1). What I have tested so far it still seems to work.

Wow, that's great!

Since you went to the trouble of doing this, can we assume you have a pretty
strong interest in this set? :)  If so, 

> Can anybody tell me what the latest state of these patches was?
> Development seemed to have stopped after 2.6.37 and with the wiki[1] being
> down I do not know if anybody is still working on these patches. What

Matt and Dan, if there is outside interest, are you able to help out at
all?  Are you still using this set at all?

Oren, what's your status?

> was the latest status about those patches being integrated into
> mainline? Is someone still trying to get it included?

There is a new upstream effort based around pushing smaller debugging-style
patches, which rather than adding a 'sys_checkpoint' syscall, allow userspace
to get the information they need to reconstruct a process set.  Several people,
Daniel (Cc:d) included, seem to prefer this approach.  See
http://lwn.net/Articles/452184/ for instance.

You might peruse the recent lkml threads (and the above article).  If you are
ok with that approach, you might consider joining them.  AFAICS they've not
done much in the last few months, though I may just have missed it.

> Here is my git tree with all the patches on top of 3.1.
> 
> http://lisas.de/~adrian/linux-cr.git
> 
> 		Adrian
> 
> [1] http://ckpt.wiki.kernel.org/

-serge

Re: linux-cr ported to 3.1

[Adrian Reber]

On Thu, Oct 27, 2011 at 02:41:25PM +0000, Serge E. Hallyn wrote:
> Quoting Adrian Reber (adrian-5+Cda9B46AM@public.gmane.org):
> > 
> > I  have ported the linux-cr patches from www.linux-cr.org/pub/git/linux-cr.git
> > to the latest kernel (3.1). What I have tested so far it still seems to work.
> 
> Wow, that's great!
> 
> Since you went to the trouble of doing this, can we assume you have a pretty
> strong interest in this set? :)  If so, 

Yes, I have.

> > Can anybody tell me what the latest state of these patches was?
> > Development seemed to have stopped after 2.6.37 and with the wiki[1] being
> > down I do not know if anybody is still working on these patches. What
> 
> Matt and Dan, if there is outside interest, are you able to help out at
> all?  Are you still using this set at all?
> 
> Oren, what's your status?
> 
> > was the latest status about those patches being integrated into
> > mainline? Is someone still trying to get it included?
> 
> There is a new upstream effort based around pushing smaller debugging-style
> patches, which rather than adding a 'sys_checkpoint' syscall, allow userspace
> to get the information they need to reconstruct a process set.  Several people,
> Daniel (Cc:d) included, seem to prefer this approach.  See
> http://lwn.net/Articles/452184/ for instance.
> 
> You might peruse the recent lkml threads (and the above article).  If you are
> ok with that approach, you might consider joining them.  AFAICS they've not
> done much in the last few months, though I may just have missed it.

I interested in whatever approach works best. I just choose the linux-cr
tree because it seemed to be the most recent development and it worked.

		Adrian

Re: linux-cr ported to 3.1

[Dan Smith]

SH> Matt and Dan, if there is outside interest, are you able to help out
SH> at all?  Are you still using this set at all?

We're really not available to help with this effort anymore, as plans
and priorities have shifted. After investing a lot of time and effort in
trying to get linux-cr upstream, as well as trying to support it
internally, I recommend that you follow whatever path has the most
traction upstream.

-- 
Dan Smith
IBM Linux Technology Center
email: danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org