44 строки
1.1 KiB
C
44 строки
1.1 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
// Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com>
|
||
|
|
|
||
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/workqueue.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
|
||
|
|
static int sleep_secs;
|
||
|
|
module_param(sleep_secs, int, 0644);
|
||
|
|
MODULE_PARM_DESC(sleep_secs, "sleep_secs (default=0)");
|
||
|
|
|
||
|
|
static void busymod_work_func(struct work_struct *work);
|
||
|
|
static DECLARE_DELAYED_WORK(work, busymod_work_func);
|
||
|
|
|
||
|
|
static void busymod_work_func(struct work_struct *work)
|
||
|
|
{
|
||
|
|
pr_info("%s, sleeping %d seconds ...\n", __func__, sleep_secs);
|
||
|
|
msleep(sleep_secs * 1000);
|
||
|
|
pr_info("%s exit\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int test_klp_callbacks_busy_init(void)
|
||
|
|
{
|
||
|
|
pr_info("%s\n", __func__);
|
||
|
|
schedule_delayed_work(&work,
|
||
|
|
msecs_to_jiffies(1000 * 0));
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void test_klp_callbacks_busy_exit(void)
|
||
|
|
{
|
||
|
|
cancel_delayed_work_sync(&work);
|
||
|
|
pr_info("%s\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(test_klp_callbacks_busy_init);
|
||
|
|
module_exit(test_klp_callbacks_busy_exit);
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
MODULE_AUTHOR("Joe Lawrence <joe.lawrence@redhat.com>");
|
||
|
|
MODULE_DESCRIPTION("Livepatch test: busy target module");
|