Linux Drivers-Multithreading

1. header file

#include <linux/kthread.h>

2. Defining variables

static pid_t thread_id;/    /thread idstatic struct completion th_exit;    //synchronous semaphore

3. Initialization

Init_completion (&th_exit);

4. Thread creation

thread_id = Kernel_thread (fuction, NULL, CLONE_FS | Clone_files);

6. Thread function entity

int fuction0 (void *arg) {     daemonize ("Mythread"); Release resources?　　Allow_signal (SIGKILL);　　　　The definition of the accept signal while (!signal_pending (current))//Return not 0 indicates a signal processing {silabs_device_start (0);　　　　　　　　　　　　Task function schedule ();　　　　Thread hibernation, scheduling other threads}complete_and_exit (&th_exit0, 1); Received semaphore, exit thread}

7. Task function and Semaphore

silabs_device_start{... ... kill_proc (thread_id,), ... ..... ........-----------------------------------　　SIGTERM, 1);　　　　Kill thread Wait_for_completion (&th_exit); Activate semaphore}

　　

Linux Drivers-Multithreading