Linux内核线程的建立

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创建内核线程的函数：
thread = kthread_create(taskq_thread, tqt, "%s/%d", name, i);
wake_up_process(thread);

其中taskq_thread为该内核函数需要做的事情。

所需要包含头文件

#include <linux/sched.h>
#include <linux/kthread.h>
#include <linux/err.h>

For Example:
resume complete时usb driver会调用do_rebind_interface() 来实现device的重新枚举。这会拖慢系统resume的速度，因此create一个线程来单独完成这件事情。


static int USBResumeSpeed_Improve(void *pvArg)//  函数返回值必须为int型{struct usb_device *udev = pvArg;do_rebind_interface(udev);        return 0;}/* The device lock is held by the PM core */int usb_resume_complete(struct device *dev){struct usb_device *udev = to_usb_device(dev);int err;struct task_struct *ResumeThreadStruct;         /* For PM complete calls, all we do is rebind interfaces          * whose needs_binding flag is set          */         if (udev->state != USB_STATE_NOTATTACHED){if(udev->descriptor.idProduce == 0x7662 ){char ResumeThreadName[10] = "RES_WIFI";ResumeThreadStruct = kthread_create(USBResumeSpeed_Improve, udev, ResumeThreadName);if(IS_ERR(ResumeThreadStruct)) {err = PTR_ERR(ResumeThreadStruct);ResumeThreadStruct = NULL;return err;}wake_up_process(ResumeThreadStruct);}else{                 do_rebind_interfaces(udev);}}return 0;}

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