Mirrors_BOOKS/LDD-LinuxDeviceDrivers
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gatieme
2016-05-31 12:05:02 +08:00
parent 50ed9a7315
commit c563502b12
1 changed files with 18 additions and 5 deletions
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study/driver/hello/hello.c
+18 -5
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@@ -1,12 +1,13 @@
#include <linux/module.h>
#include <linux/init.h>
MODULE_LICENSE("Dual BSD/GPL");
static int hello_init(void)
/*
* print the module information
*/
static void print_module(void)
{
unsigned int cpu = get_cpu();
struct module *mod;
printk(KERN_ALERT "this module: %p==%p\n", &__this_module, THIS_MODULE);
@@ -15,14 +16,26 @@ static int hello_init(void)
list_for_each_entry(mod, *(&THIS_MODULE->list.prev), list);
printk(KERN_ALERT "module name: %s\n", mod->name);
printk(KERN_ALERT "module state: %d\n", THIS_MODULE->state);
}
static int hello_init(void)
{
print_module( );
printk(KERN_ALERT "run in cpu %d\n", get_cpu());
printk(KERN_ALERT "PAGE_OFFSET : 0x%lx, TASK_SIZE : 0x%lx", PAGE_OFFSET, TASK_SIZE);
return 0;
}
static void hello_exit(void)
{
printk(KERN_ALERT "module state: %d\n", THIS_MODULE->state);
}