HelloWorld模块加入内核

908416047

1.将linux内核包解压

2.make编译内核

3.make menuconfig

4.将helloword模块加入内核

(1)copy helloworld 到 driver/char/helloworld

(2)vim Kconfig

加入

config HELLO_WORLD

tristate "helloworld"

default m

help

this is a test

(3)vim driver/char/Kconfig

在endmenu前加入

source  "driver/char/helloworld/Kconfig"

(4)vim driver/char/Makefile

obj-$(CONFIG_HELLO_WORLD)+=helloword/(是文件夹)

hello.c文件

1. #include <linux/init.h>
   
2. #include <linux/module.h>
   
3. 
   
4. static int hello_init()
   
5. {
   
6.     printk(KERN_ALERT "Hello,world\n");
   
7.     return 0;
   
8. }
   
9. static void hello_exit()
   
10. {
    
11.     printk(KERN_ALERT "Goodbye,cruel world\n");
    
12. }
    
13. module_init(hello_init);
    
14. module_exit(hello_exit);
    
15. MODULE_LICENSE("Dual BSD/GPL");

Makefile文件

1. CONFIG_HELLO_WORLD ?= m
   
2. ifneq ($(KERNELRELEASE),)
   
3. hello_world-objs := hello.o
   
4. obj-$(CONFIG_HELLO_WORLD) += hello_world.o
   
5. else
   
6. KERNELDIR=/home/zhb/software/linux-2.6.30.4/
   
7. PWD := $(shell pwd)
   
8. modules:
   
9. $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
   
10. endif
    
11.  clean:
    
12. rm -rf *.o *.ko *.order *.symvers *.mod.c *.markers

Kconfig文件(和driver/char/Kconfig不是同一个文件)

1. config HELLO_WORLD
   
2. tristate "helloworld"
   
3. default m
   
4. help
   
5.     this is a test