lkmpg/examples/sched.c

/*
 * sched.c
 */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/workqueue.h>

static struct workqueue_struct *queue = NULL;
static struct work_struct work;

static void work_handler(struct work_struct *data)
{
    pr_info("work handler function.\n");
}

static int __init sched_init(void)
{
    queue = alloc_workqueue("HELLOWORLD", WQ_UNBOUND, 1);
    if (!queue) {
        pr_err("Failed to allocate workqueue\n");
        return -ENOMEM;
    }
    INIT_WORK(&work, work_handler);
    queue_work(queue, &work);
    return 0;
}

static void __exit sched_exit(void)
{
    flush_workqueue(queue);
    destroy_workqueue(queue);
}

module_init(sched_init);
module_exit(sched_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Workqueue example");