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http://blog.chinaunix.net/u1/34474/showart_404278.html
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LinuxÉ豸Çý¶¯³ÌÐòѧϰ£¨0£©£­Hello, world£¡Ä£¿é
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#include <linux/init.h>
#include <linux/module.h>
MODULE_LICENSE("Dual BSD/GPL");
static int hello_init(void)
{
    printk(KERN_ALERT "Hello, Tekkaman Ninja £¡\n");
    return 0;
}
static void hello_exit(void)
{
    printk(KERN_ALERT "Goodbye, Tekkaman Ninja £¡\n Love Linux !Love ARM ! Love KeKe !\n");
}
module_init(hello_init);
module_exit(hello_exit);
ÎÒ½«Æ临ÖƵ½ÎҵŤ×÷Ŀ¼£¬²¢±àдÁËÒ»¸ö¼òµ¥µÄMakefileÎļþ£º
KERNELDIR = /home/tekkaman/working/SBC2440/linux-2.6.22.2
    # The current directory is passed to sub-makes as argument
PWD := $(shell pwd)
INSTALLDIR = /home/tekkaman/working/rootfs/lib/modules
CROSS_COMPILE    =/home/tekkaman/working/crosstool-gcc410-k26222/gcc-4.1.0-glibc-2.3.2/arm-9tdmi-linux-gnu/bin/arm-9tdmi-linux-gnu-
CC    = $(CROSS_COMPILE)gcc
obj-m := hello.o
modules:
    $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
modules_install:
    cp hello.ko $(INSTALLDIR)
clean:
    rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
.PHONY: modules modules_install clean
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È»ºó¾ÍÊÇmake  modules ¡¢ make  modules_install ¡£
[root@Tekkaman-Ninja Helloworld]# make modules
make -C /home/tekkaman/working/SBC2440/linux-2.6.22.2 M=/home/tekkaman/working/Linuxdriver/Helloworld modules
make[1]: Entering directory `/home/tekkaman/working/SBC2440/linux-2.6.22.2