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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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7d16a5c024
sleep was broken because the workqueue was declared locally inside init, further evidence that no one has ever run the examples :-(
41 lines
787 B
C
41 lines
787 B
C
/* https://github.com/cirosantilli/linux-kernel-module-cheat#workqueue-from-workqueue */
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/workqueue.h>
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static int i;
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static struct workqueue_struct *queue;
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static void work_func(struct work_struct *work);
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DECLARE_DELAYED_WORK(next_work, work_func);
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DECLARE_WORK(work, work_func);
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static void work_func(struct work_struct *work)
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{
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pr_info("%d\n", i);
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i++;
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if (i == 10)
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i = 0;
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queue_delayed_work(queue, &next_work, HZ);
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}
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static int myinit(void)
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{
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queue = create_workqueue("myworkqueue");
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queue_work(queue, &work);
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return 0;
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}
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static void myexit(void)
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{
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cancel_delayed_work(&next_work);
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flush_workqueue(queue);
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destroy_workqueue(queue);
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}
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module_init(myinit)
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module_exit(myexit)
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MODULE_LICENSE("GPL");
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