Re: [PATCH v2] x86/setup: Merge {early_,}reserve_initrd() to one function

[Ingo Molnar]

* Alexander Kuleshov <kuleshovmail@xxxxxxxxx> wrote:

> Hello Ingo,
> 
> On Tue, Feb 9, 2016 at 3:16 PM, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
> >
> > So I don't think the code got easier to understand - in particular the
> > memblock_reserve()/free() pattern, depending on a flag value, is confusing.
> >
> > The duplication is there - but please factor it out into a helper structure
> > ('struct ramdisk') and a helper function that sets up the structure.
> 
> What if instead of `struct ramdisk`, we will move all definitions/check from
> the early_reserve_initrd to the setup_arch() and than will pass these values
> to the reserve_initrd()?

There's too many of them, putting them into 'struct ramdisk' cleans up and 
documents the whole code.

And yes, 'struct ramdisk' state should be defined in setup_arch(), that way it 
does not have to be calculated twice: so the patch becomes not just a code size 
reduction but a (small) runtime reduction as well.

Should be tested with a real ramdisk, to make sure everything still works fine.

Thanks,

	Ingo