[CRIU] [PATCH 3/4] cg: Add ability to dump specified controllers only

[Cyrill Gorcunov]

On Mon, May 16, 2016 at 03:39:48PM +0300, Pavel Emelyanov wrote:
> > @@ -631,6 +632,10 @@ int main(int argc, char *argv[], char *envp[])
> >  		case 1081:
> >  			opts.cgroup_props_file = optarg;
> >  			break;
> > +		case 1082:
> > +			if (!cgp_add_dump_controller(optarg))
> 
> Why not rely on --cgroup-props[-file] option?
> 
> > +				return 1;
> > +			break;

This is different. This particular feature allows us to skip
controllers without specifying properties, ie when we're fine
with built-in props criu provides. This saves space in command
line arguments.