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simple example for tasklet in Linux kernel
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/******************************************************************************* | |
* Copyright (c) 2015 Song Yang @ ittraining | |
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* All rights reserved. | |
* This program is free to use, but the ban on selling behavior. | |
* Modify the program must keep all the original text description. | |
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* 本程式可任意使用,但是禁止販售行為。 | |
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#include <linux/module.h> | |
#include <linux/init.h> | |
#include <linux/interrupt.h> | |
MODULE_LICENSE("Dual BSD/GPL"); | |
static void my_tasklet_handler(unsigned long flag); | |
DECLARE_TASKLET(my_tasklet, my_tasklet_handler, 0); | |
static void my_tasklet_handler(unsigned long flag) | |
{ | |
tasklet_disable(&my_tasklet); | |
printk("my_tasklet run: do what the tasklet want to do....\n"); | |
tasklet_enable(&my_tasklet); | |
} | |
static int hello_tasklet_init(void) | |
{ | |
printk("module init start. \n"); | |
printk("Hello tasklet!\n"); | |
tasklet_schedule(&my_tasklet); | |
printk("module init end.\n"); | |
return 0; | |
} | |
static void hello_tasklet_exit(void) | |
{ | |
tasklet_kill(&my_tasklet); | |
printk("Goodbye, tasklet!\n"); | |
} | |
module_init(hello_tasklet_init); | |
module_exit(hello_tasklet_exit); |
DECLARE_TASKLET(my_tasklet, my_tasklet_handler, 0);
should be changed to
DECLARE_TASKLET_OLD(my_tasklet, my_tasklet_handler);
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This source code should be changed from DECLARE_TASKLET to DECLARE_TASKLET_OLD.