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

From: David Howells <[email-masked]>
Date: Wed, 26 May 2010 10:54:41 +0100

K.Prasad <[email-masked]> 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