3 * Copyright (C) 2010 - 2013 UNISYS CORPORATION
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
14 * NON INFRINGEMENT. See the GNU General Public License for more
19 #include <asm/processor.h>
20 #include <linux/signal.h>
21 #include <linux/sched.h>
22 #include <linux/kthread.h>
24 #include "uisthread.h"
26 /* this is shorter than using __FILE__ (full path name) in
27 * debug/info/error messages
29 #define CURRENT_FILE_PC UISLIB_PC_uisthread_c
30 #define __MYFILE__ "uisthread.c"
32 /*****************************************************/
33 /* Exported functions */
34 /*****************************************************/
36 /* returns 0 for failure, 1 for success */
38 uisthread_start(struct uisthread_info *thrinfo,
39 int (*threadfn)(void *), void *thrcontext, char *name)
41 /* used to stop the thread */
42 init_completion(&thrinfo->has_stopped);
43 thrinfo->task = kthread_run(threadfn, thrcontext, name);
44 if (IS_ERR(thrinfo->task)) {
46 return 0; /* failure */
48 thrinfo->id = thrinfo->task->pid;
51 EXPORT_SYMBOL_GPL(uisthread_start);
54 uisthread_stop(struct uisthread_info *thrinfo)
59 return; /* thread not running */
61 kthread_stop(thrinfo->task);
62 /* give up if the thread has NOT died in 1 minute */
63 if (wait_for_completion_timeout(&thrinfo->has_stopped, 60 * HZ))
69 EXPORT_SYMBOL_GPL(uisthread_stop);