如何單獨編譯內核模塊

如何單獨編譯內核模塊

1.  hello.clinux

#include <linux/init.h>
#include <linux/module.h>
MODULE_LICENSE("Dual BSD/GPL");
static int hello_init(void)
{
printk(KERN_ALERT "Hello World enter\n");
return 0;
}
static void hello_exit(void)
{
printk(KERN_ALERT "Hello World exit\n");
}
module_init(hello_init);
module_exit(hello_exit);
MODULE_AUTHOR("Song YanNa");
MODULE_DESCRIPTION("A Sample Hello World Module");
MODULE_ALIAS("A Sample module");

  

2. Makefileshell

#
#Makefile for the helloworld.c
#
obj-m := hello.o
CURRENT_PATH := $(shell pwd)
LINUX_KERNEL := $(shell uname -r) LINUX_KERNEL_PATH := /usr/src/linux-headers-$(LINUX_KERNEL) all: $(MAKE) -C $(LINUX_KERNEL_PATH) M=$(CURRENT_PATH) modules clean: rm *.ko rm *.o

  

3.在shell終端輸入makebash

出現以下信息,說明編譯成功。ui

NaNa:/home/nana/driver # make
make -C /home/nana/driver/linux-3.1.10 M=/home/nana/driver modules

make[1]: Entering directory `/home/nana/driver/linux-3.1.10'
  CC [M]  /home/nana/driver/hello.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /home/nana/driver/hello.mod.o
  LD [M]  /home/nana/driver/hello.ko
make[1]: Leaving directory `/home/nana/driver/linux-3.1.10' 

4. 將模塊載入內核日誌

sudo insmod ./hello.ko

5. 刪除內核中的模塊 blog

rmmod hello.ko

在終端輸入dmesg,能夠查看內核的日誌信息it

查詢安裝的模塊編譯

lsmod
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