On Tue, Aug 13, 2019 at 02:47:08PM +0200, Greg KH wrote:

On Tue, Aug 13, 2019 at 01:17:07PM +0100, Matthias Maennich wrote:

quoted

Modules using these symbols are required to explicitly import the
namespace. This patch was generated with the following steps and serves
as a reference to use the symbol namespace feature:

 1) Define DDEFAULT_SYMBOL_NAMESPACE in the corresponding Makefile
 2) make  (see warnings during modpost about missing imports)
 3) make nsdeps

Instead of a DEFAULT_SYMBOL_NAMESPACE definition, the EXPORT_SYMBOL_NS
variants can be used to explicitly specify the namespace. The advantage
of the method used here is that newly added symbols are automatically
exported and existing ones are exported without touching their
respective EXPORT_SYMBOL macro expansion.

Ok, I can't read text, this answers my previous question.

But, as an example, shouldn't we also have some code here that uses the
EXPORT_SYMBOL_NS() macro to ensure that it actually works?

I will create another patch for a different subsystem where the use of
the macros is more appropriate. Then we have both use cases covered.

Cheers,
Matthias