Makefile

# SPDX-License-Idenfitier: GPL-2.0
MODS  := open
MODS  += read
MODS  += write
MODS  += readv
MODS  += writev
MODS  += append
MODS  += scull
MODS  += proc
MODS  += seq
MODS  += faulty
MODS  += sem
MODS  += rwsem
MODS  += mutex
MODS  += comp
MODS  += spinlock
MODS  += rwlock
MODS  += kfifo
MODS  += seqlock
MODS  += rculock
MODS  += sleepy
MODS  += scullpipe
MODS  += scullfifo
MODS  += poll
MODS  += lseek
MODS  += hz
MODS  += jiffies
MODS  += jitbusy
MODS  += jitsched
MODS  += jitqueue
MODS  += jitimer
MODS  += jitasklet
MODS  += jiwq
MODS  += alloc
MODS  += scullc
# ldd bus based drivers
MODS  += ldd
MODS  += sculld
MODS  += snull
KMAJ  := $(shell uname -r|sed -e 's/\([0-9]\+\)\..*/\1/')
ifeq ($(KMAJ),4)
	NOMODS := proc seq poll hz jiffies jitbusy jitsched
	NOMODS += jitqueue jitimer jitasklet jiwq
	MODS := $(filter-out $(NOMODS),$(MODS))
endif
obj-m += $(patsubst %,%.o,$(MODS))
TESTS := $(patsubst %,%_test,$(MODS))
KDIR  ?= /lib/modules/$(shell uname -r)/build
all default: modules
install: modules_install
modules modules_install help:
	$(MAKE) -C $(KDIR) M=$(shell pwd) $@
.PHONY: clean load unload reload
clean: clean_tests
	$(MAKE) -C $(KDIR) M=$(shell pwd) $@
load:
	$(info loading modules...)
	@for mod in $(shell cat modules.order);   \
		do insmod ./$$(basename $${mod}); \
	done
unload:
	$(info unloading modules...)
	@-for mod in $(shell cat modules.order|sort -r); \
		do rmmod ./$$(basename $${mod});         \
	done
reload: unload load
# selftest based unit tests under tests directory.
.PHONY: test run_tests clean_tests
test $(TESTS): modules clean_tests reload
	@# exclude rculock_test, as it crashes the kernel.
	@TESTS="$(filter-out rculock_test,$(TESTS))" $(MAKE) -C tests $@
run_tests: modules reload
	@TESTS="$(filter-out rculock_test,$(TESTS))" $(MAKE) \
		-C tests top_srcdir=$(KDIR) OUTPUT=$(shell pwd)/tests $@
clean_tests:
	@$(MAKE) -C tests top_srcdir=$(KDIR) OUTPUT=$(shell pwd)/tests clean