in_suspend and __nosave

[Sam Ravnborg]

Hi Rafael & Linus.

While unifying vmlinux.lds for x86 I stumbled
over the .data.nosave section.

Searching a bit I found only a single user:

swsusp.c:int in_suspend __nosavedata = 0;

Do we really needs all this complexity for this single integer?
We have this section defined in several arch lds files.

I understand that in_suspend is special as in that we do not
want the value restored while resuming.
But is there no other way to do so today?

All I want is to kill a lot from the vmlinux.lds files.

It also occur to me that only: x86, powerpc, and sh
implement pfn_is_nosave() which I think is the only
place where we decide if we want to save a page or not.

But we define the .data.nosave section in following
architectures:
arm, m32r, mips, mn10300, parisc, s390 in addition
to the above archs that define pfn_is_nosave().
Is this something to be cleaned up?

	Sam
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