Extended Makefile to load kernel modules

Already built kernel modules can be load in an out-of-tree build with the load_modules target into the kernel. The correct loading order of the modules is preserved by this Makefile target. Furthermore, the modules can be unloaded with the target unload_modules later on.

2 files changed, 24 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 9ac1860..b009bb6 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,7 @@
 # Global configuration (file paths and config)
 #------------------------------------------------------------------------------
 KERNEL_SRC_DIR    := $(shell pwd)/implementation/loop
+KERNEL_MOD_PATH   := drivers/block/loop/
 KERNEL_HDR_DIR    := /lib/modules/$(shell uname -r)/build
 LOSETUP_SRC_DIR   := $(shell pwd)/implementation/losetup
 KERNEL_MOD_CONFIG := $(shell pwd)/config/kernel-qcow2_x86-64_module.config
@@ -19,7 +20,7 @@ LOCAL_MOD_CONFIG  += CONFIG_BLK_DEV_LOOP_FILE_FMT_QCOW=m
 BUILD             ?= vanilla
 KERNEL_DIR        ?= $(KERNEL_SRC_DIR)
 CONFIG            ?= KCONFIG_CONFIG=$(KERNEL_MOD_CONFIG)
-TARGET_PATH_PREFX ?= drivers/block/loop/
+TARGET_PATH_PREFX ?= $(KERNEL_MOD_PATH)
 
 ifeq ($(BUILD),out-of-tree)
 PATCH              = patch
@@ -73,6 +74,28 @@ clean_losetup:
 	@cd $(LOSETUP_SRC_DIR) && \
 		$(MAKE) --no-print-directory clean
 
+ifeq ($(BUILD),out-of-tree)
+loop.load: loop.ko
+loop_file_fmt_raw.load: loop_file_fmt_raw.ko loop.load
+loop_file_fmt_qcow.load: loop_file_fmt_qcow.ko loop.load
+
+loop.unload: loop_file_fmt_raw.unload loop_file_fmt_qcow.unload
+loop_file_fmt_raw.unload:
+loop_file_fmt_qcow.unload:
+
+load_modules: loop.load loop_file_fmt_raw.load loop_file_fmt_qcow.load
+
+unload_modules: loop_file_fmt_qcow.unload loop_file_fmt_raw.unload loop.unload
+
+%.load:
+	$(call print_heading,"Load kernel module $(basename $@)")
+	sudo insmod $(KERNEL_SRC_DIR)/$(KERNEL_MOD_PATH)$(basename $@).ko
+
+%.unload:
+	$(call print_heading,"Unload kernel module $(basename $@)")
+	sudo rmmod $(basename $@)
+endif
+
 #------------------------------------------------------------------------------
 # Function definitions
 #------------------------------------------------------------------------------
diff --git a/implementation/loop b/implementation/loop
-Subproject 6f5dc67946313ced450de6546fc7f28e0afdf1a
+Subproject b9562e46df0f2ddfbd01b99a44a3c4eaa3f32fe