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SubjectRe: [PATCH 05/34] PCI: Use a weak symbol for the empty version of pcibios_add_platform_entries()
On Wed, Jul 11, 2007 at 05:49:22PM -0600, Matthew Wilcox wrote:
> On Wed, Jul 11, 2007 at 04:31:19PM -0700, Greg Kroah-Hartman wrote:
> > I'm not sure if this is going to fly, weak symbols work on the compilers I'm
> > using, but whether they work for all of the affected architectures I can't say.
> > I've cc'ed as many arch maintainers/lists as I could find.
> >
> > But assuming they do, we can use a weak empty definition of
> > pcibios_add_platform_entries() to avoid having an empty definition on every
> > arch.
> This seems like a regression. We go from having an empty inline
> function that gets optimised away to 0 to having a function call to a
> trivial function. And on any architecture that *does* define this,
> (unless I misunderstand the GCC manual), we still include the weak
> definition, thus wasting space.

Yeah, but it can be a big pain to add it to every architecture when only
1 or two need it, which is why I see people using the week symbol stuff
more and more, right? This is just following that trend.


greg k-h
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