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Message-Id: <20240506175040.410446-1-florian.fainelli@broadcom.com>
Date: Mon,  6 May 2024 10:50:40 -0700
From: Florian Fainelli <florian.fainelli@...adcom.com>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org,
	jgg@...dia.com,
	leonro@...dia.com,
	horms@...nel.org,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tal Gilboa <talgi@...dia.com>,
	linux-kernel@...r.kernel.org (open list:LIBRARY CODE)
Subject: [PATCH net-next v2] lib: Allow for the DIM library to be modular

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@...adcom.com>
---
Changes in v2:

- Added MODULE_DESCRIPTION()

 lib/Kconfig      | 2 +-
 lib/dim/Makefile | 4 ++--
 lib/dim/dim.c    | 3 +++
 3 files changed, 6 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..83b65ac74d73 100644
--- a/lib/dim/dim.c
+++ b/lib/dim/dim.c
@@ -82,3 +82,6 @@ bool dim_calc_stats(struct dim_sample *start, struct dim_sample *end,
 	return true;
 }
 EXPORT_SYMBOL(dim_calc_stats);
+
+MODULE_DESCRIPTION("Dynamic Interrupt Moderation (DIM) library");
+MODULE_LICENSE("Dual BSD/GPL");
-- 
2.34.1


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