Re: [Patch 1/4] Allow arch-specific cleanup before breakpoint unregistration

David Howells
2010-05-26T09:55:07Z

K.Prasad <prasad@linux.vnet.ibm.com> wrote:

> > My understanding is weak function definitions must appear in a different C
> > file than their call sites to work on some toolchains.
> >
>
> Atleast, there are quite a few precedents inside the Linux kernel for
> __weak functions being invoked from the file in which they are defined
> (arch_hwblk_init, arch_enable_nonboot_cpus_begin and hw_perf_disable to
> name a few).
> Moreover the online GCC docs haven't any such constraints mentioned.

I've seen problems in this area. gcc sometimes inlines a weak function that's
in the same file as the call point.

David