Re: [PATCH 2/2] kernel: add support for live patching

[Jiri Kosina <jkosina@suse.cz>]

On Thu, 6 Nov 2014, Seth Jennings wrote:

> > Thanks a lot for having started the work on this!
> > 
> > We will be reviewing it carefully in the coming days and will getting back 
> > to you (I was surprised to see that that diffstat indicates that it's 
> > actually more code than our whole kgraft implementation including the 
> > consistency model :) ).
> 
> The structure allocation and sysfs stuff is a lot of (mundane) code.
> Lots of boring error path handling too.

Also, lpc_create_object(), lpc_create_func(), lpc_create_patch(), 
lpc_create_objects(), lpc_create_funcs(), ... they all are pretty much 
alike, and are asking for some kind of unification ... perhaps iterator 
for generic structure initialization?

I am not also really fully convinced that we need the patch->object->funcs 
abstraction hierarchy (which also contributes to the structure allocation 
being rather a spaghetti copy/paste code) ... wouldn't patch->funcs be 
suffcient, with the "object" being made just a property of the function, 
for example?

> Plus, I show that kernel/kgraft.c + kernel/kgraft_files.c is
> 906+193=1099.  I'd say they are about the same size :)

Which is still seem to me to be a ratio worth thinking about improving :)

Thanks,

-- 
Jiri Kosina
SUSE Labs