Re: [PATCH v2 04/10] modpost: add support for symbol namespaces

[Greg KH]

On Tue, Aug 13, 2019 at 01:17:01PM +0100, Matthias Maennich wrote:
> Add support for symbols that are exported into namespaces. For that,
> extract any namespace suffix from the symbol name. In addition, emit a
> warning whenever a module refers to an exported symbol without
> explicitly importing the namespace that it is defined in. This patch
> consistently adds the namespace suffix to symbol names exported into
> Module.symvers.
> 
> Example warning emitted by modpost in case of the above violation:
> 
>  WARNING: module ums-usbat uses symbol usb_stor_resume from namespace
>  USB_STORAGE, but does not import it.
> 
> Co-developed-by: Martijn Coenen <maco@xxxxxxxxxxx>
> Signed-off-by: Martijn Coenen <maco@xxxxxxxxxxx>
> Reviewed-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Matthias Maennich <maennich@xxxxxxxxxx>
> ---
>  scripts/mod/modpost.c | 91 +++++++++++++++++++++++++++++++++++++------
>  scripts/mod/modpost.h |  7 ++++
>  2 files changed, 87 insertions(+), 11 deletions(-)

Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>