module_init
时间: 2023-11-26 11:04:14 浏览: 45
The `module_init` macro is used to define the entry point for a Linux kernel module. It is placed at the beginning of the module source file and specifies a function that will be called when the module is loaded into the kernel.
The syntax for `module_init` is as follows:
```
module_init(init_function);
```
where `init_function` is the name of the function that will be called when the module is loaded.
For example, to define a module called `hello` with an initialization function called `hello_init`, the code would look like this:
```
#include <linux/module.h>
static int hello_init(void)
{
printk(KERN_INFO "Hello, world!\n");
return 0;
}
module_init(hello_init);
```
When the `hello` module is loaded, the `hello_init` function will be called and the message "Hello, world!" will be printed to the kernel log.
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