Scsi - Index of

你写的任何一个模块都需要使用她们来初始化或退出,或者说注册以及后来的注销.当你用
module_init()为一个模块注册了之后,在你使用insmod 这个命令去安装的时
候,module_init()注册的函数将会被执行,而当你用rmmod 这个命令去卸载一个模块的时
候,module_exit()注册的函数将会被执行.module_init()被称为驱动程序的初始化入口
(driver initialization entry point).
怎么样演示以上代码的运行呢?没错,你需要一个Makefile.
+++++++++++++++++++++Makefile++++++++++++++++++++++++
+++
1 # To build modules outside of the kernel tree, we run "make"
2 # in the kernel source tree; the Makefile these then includes this
3 # Makefile once again.
4 # This conditional selects whether we are being included from the
5 # kernel Makefile or not.
6 ifeq ($(KERNELRELEASE),)
7
8 # Assume the source tree is where the running kernel was built
9 # You should set KERNELDIR in the environment if it's elsewhere
10 KERNELDIR ?= /lib/modules/$(shell uname -r)/build
11 # The current directory is passed to sub-makes as argument
12 PWD := $(shell pwd)
8
13
14 modules:
15 $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
16
17 modules_install:
18 $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
19
20 clean:
21 rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions
22
23 .PHONY: modules modules_install clean
24
25 else
26 # called from kernel build system: just declare what our modules are
27 obj-m := hello.o
28 endif
++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++
在lwn 上可以找到这个例子,你可以把以上两个文件放在你的某个目录下,然后执行make,也许
你不一定能成功,因为LK 2.6 要求你编译模块之前,必须先在内核源代码目录下执行make,换言
之,你必须先配置过内核,执行过make,然后才能make 你自己的模块.原因我就不细说了,你按
着她要求的这么去做就行了.在内核顶层目录make 过之后,你就可以在你当前放置Makefile
的