list_head

#include <linux/module.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/string.h>
#include <linux/slab.h>

static struct list_head head;

struct myinfo
{
    struct list_head list;
    int var;
};

static int __init sky_init(void)
{
    struct myinfo *ptr;
    struct list_head *p;
    int i;
    
    INIT_LIST_HEAD(&head);

    for (i = 0; i < 10; i++)
    {
        ptr = kmalloc(sizeof(struct myinfo), GFP_KERNEL);
        if (ptr)
        {
            memset(ptr, '\0', sizeof(struct myinfo));
            ptr->var = i;
            list_add_tail(&ptr->list, &head);
        }
    }

    list_for_each(p, &head)
    {
        ptr = list_entry(p, struct myinfo, list);
        printk(KERN_NOTICE "var = %d\n", ptr->var);    
    }
    
    while (!list_empty(&head))
    {
        p = (&head)->next;
        list_del(p);
        ptr = list_entry(p, struct myinfo, list);
        kfree(ptr);
    }

    return 0;
}

static void __exit sky_exit(void)
{
}

module_init(sky_init);
module_exit(sky_exit);
MODULE_LICENSE("GPL");