Re: [PATCH net-next] lib: Allow for the DIM library to be modular

From: Simon Horman
Date: Sat May 04 2024 - 16:17:53 EST


On Thu, May 02, 2024 at 05:25:40PM -0700, Florian Fainelli wrote:
> Allow the Dynamic Interrupt Moderation (DIM) library to be built as a
> module. This is particularly useful in an Android GKI (Google Kernel
> Image) configuration where everything is built as a module, including
> Ethernet controller drivers. Having to build DIMLIB into the kernel
> image with potentially no user is wasteful.
>
> Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
> ---
> lib/Kconfig | 2 +-
> lib/dim/Makefile | 4 ++--
> lib/dim/dim.c | 2 ++
> 3 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/lib/Kconfig b/lib/Kconfig
> index 4557bb8a5256..d33a268bc256 100644
> --- a/lib/Kconfig
> +++ b/lib/Kconfig
> @@ -628,7 +628,7 @@ config SIGNATURE
> Implementation is done using GnuPG MPI library
>
> config DIMLIB
> - bool
> + tristate
> help
> Dynamic Interrupt Moderation library.
> Implements an algorithm for dynamically changing CQ moderation values
> diff --git a/lib/dim/Makefile b/lib/dim/Makefile
> index 1d6858a108cb..c4cc4026c451 100644
> --- a/lib/dim/Makefile
> +++ b/lib/dim/Makefile
> @@ -2,6 +2,6 @@
> # DIM Dynamic Interrupt Moderation library
> #
>
> -obj-$(CONFIG_DIMLIB) += dim.o
> +obj-$(CONFIG_DIMLIB) += dimlib.o
>
> -dim-y := dim.o net_dim.o rdma_dim.o
> +dimlib-objs := dim.o net_dim.o rdma_dim.o
> diff --git a/lib/dim/dim.c b/lib/dim/dim.c
> index e89aaf07bde5..c50e5b4dc46e 100644
> --- a/lib/dim/dim.c
> +++ b/lib/dim/dim.c
> @@ -82,3 +82,5 @@ bool dim_calc_stats(struct dim_sample *start, struct dim_sample *end,
> return true;
> }
> EXPORT_SYMBOL(dim_calc_stats);
> +
> +MODULE_LICENSE("Dual BSD/GPL");

nit: If we follow this route then MODULE_DESCRIPTION should be added too,
right?