/*!
* Create new thread (params on user stack!)
* \param thread User level thread descriptor
* \param attr Thread attributes
* \param start_routine Starting function for new thread
* \param arg Parameter sent to starting function
* (parameters are on calling thread stack)
*/
int sys__pthread_create ( pthread_t *thread, pthread_attr_t *attr,
void *(*start_routine) (void *), void *arg )
{
kthread_t *kthread;
uint flags = 0;
int sched_policy = SCHED_FIFO;
int sched_priority = THREAD_DEF_PRIO;
void *stackaddr = NULL;
size_t stacksize = 0;
SYS_ENTRY();
if ( attr )
{
flags = attr->flags;
sched_policy = attr->sched_policy;
sched_priority = attr->sched_params.sched_priority;
stackaddr = attr->stackaddr;
stacksize = attr->stacksize;
ASSERT_ERRNO_AND_EXIT ( sched_policy == SCHED_FIFO,
ENOTSUP );
ASSERT_ERRNO_AND_EXIT (
sched_priority >= THREAD_MIN_PRIO &&
sched_priority <= THREAD_MAX_PRIO,
ENOMEM
);
/* if ( flags & SOMETHING ) change attributes ... */
}
kthread = kthread_create ( start_routine, arg, flags,
sched_policy, sched_priority,
stackaddr, stacksize );
ASSERT_ERRNO_AND_EXIT ( kthread, ENOMEM );
if ( thread )
{
thread->ptr = kthread;
thread->id = kthread_get_id (kthread);
}
kthreads_schedule ();
SYS_EXIT ( EXIT_SUCCESS, EXIT_SUCCESS );
}
int
vcons_init(struct vcons_data *vd, void *cookie, struct wsscreen_descr *def,
struct wsdisplay_accessops *ao)
{
/* zero out everything so we can rely on untouched fields being 0 */
memset(vd, 0, sizeof(struct vcons_data));
vd->cookie = cookie;
vd->init_screen = vcons_dummy_init_screen;
vd->show_screen_cb = NULL;
/* keep a copy of the accessops that we replace below with our
* own wrappers */
vd->ioctl = ao->ioctl;
/* configure the accessops */
ao->ioctl = vcons_ioctl;
ao->alloc_screen = vcons_alloc_screen;
ao->free_screen = vcons_free_screen;
ao->show_screen = vcons_show_screen;
#ifdef WSDISPLAY_SCROLLSUPPORT
ao->scroll = vcons_scroll;
#endif
LIST_INIT(&vd->screens);
vd->active = NULL;
vd->wanted = NULL;
vd->currenttype = def;
callout_init(&vd->switch_callout, 0);
callout_setfunc(&vd->switch_callout, vcons_do_switch, vd);
/*
* a lock to serialize access to the framebuffer.
* when switching screens we need to make sure there's no rasops
* operation in progress
*/
#ifdef DIAGNOSTIC
vd->switch_poll_count = 0;
#endif
#ifdef VCONS_SWITCH_ASYNC
kthread_create(PRI_NONE, 0, NULL, vcons_kthread, vd,
&vd->redraw_thread, "vcons_draw");
#endif
return 0;
}
void create_dma_threads()
{
struct task_struct *p[MAX_THREADS];
int t_count;
for (t_count = 0; t_count < MAX_THREADS; t_count++) {
p[t_count] = kthread_create(dma_chain_thread_entry, &cht[t_count],
"dma_chain_thread");
kthread_bind(p[t_count], t_count);
}
/* Start all the threads at a time */
for (t_count = 0; t_count < MAX_THREADS; t_count++) {
wake_up_process(p[t_count]);
}
return;
}
/*
* Create per-filesystem syncer process
*/
void
vn_syncer_thr_create(struct mount *mp)
{
struct syncer_ctx *ctx;
static int syncalloc = 0;
ctx = kmalloc(sizeof(struct syncer_ctx), M_TEMP, M_WAITOK | M_ZERO);
ctx->sc_mp = mp;
ctx->sc_flags = 0;
ctx->syncer_workitem_pending = hashinit(SYNCER_MAXDELAY, M_DEVBUF,
&ctx->syncer_mask);
ctx->syncer_delayno = 0;
lwkt_token_init(&ctx->sc_token, "syncer");
mp->mnt_syncer_ctx = ctx;
kthread_create(syncer_thread, ctx, &ctx->sc_thread,
"syncer%d", ++syncalloc & 0x7FFFFFFF);
}
static int AVL6211_Blindscan_Scan(struct dvb_frontend* fe, struct dvbsx_blindscanpara *pbspara)
{
printk(KERN_INFO "AVL6211_Blindscan_Scan printk\n");
AVL_DVBSx_IBSP_WaitSemaphore(&blindscanSem);
fe_use = fe;
blindstart=1;
AVL_DVBSx_IBSP_ReleaseSemaphore(&blindscanSem);
dvbs2_task = kthread_create(dvbs2_blindscan_task, pbspara, "dvbs2_task");
if(!dvbs2_task){
printk("Unable to start dvbs2 thread.\n");
dvbs2_task = NULL;
return -1;
}
wake_up_process(dvbs2_task);
return 0;
}
static int exynos_dm_hotplug_notifier(struct notifier_block *notifier,
unsigned long pm_event, void *v)
{
switch (pm_event) {
case PM_SUSPEND_PREPARE:
mutex_lock(&thread_lock);
in_suspend_prepared = true;
if(nr_sleep_prepare_cpus > 1) {
pr_info("%s, %d : dynamic_hotplug CMD_SLEEP_PREPARE\n", __func__, __LINE__);
if (!dynamic_hotplug(CMD_SLEEP_PREPARE))
prev_cmd = CMD_LOW_POWER;
}
else {
if (!dynamic_hotplug(CMD_LOW_POWER))
prev_cmd = CMD_LOW_POWER;
}
exynos_dm_hotplug_disable();
if (dm_hotplug_task) {
kthread_stop(dm_hotplug_task);
dm_hotplug_task = NULL;
}
mutex_unlock(&thread_lock);
break;
case PM_POST_SUSPEND:
mutex_lock(&thread_lock);
exynos_dm_hotplug_enable();
dm_hotplug_task =
kthread_create(on_run, NULL, "thread_hotplug");
if (IS_ERR(dm_hotplug_task)) {
mutex_unlock(&thread_lock);
pr_err("Failed in creation of thread.\n");
return -EINVAL;
}
in_suspend_prepared = false;
wake_up_process(dm_hotplug_task);
mutex_unlock(&thread_lock);
break;
}
return NOTIFY_OK;
}
static void ddump_percpu_thread_create(void)
{
// struct task_struct *ddump_thread_helper;
int index = 0, order = 1;
int cpu = 0; // need to figure out how to bind CPU
struct task_struct *tmp_thread;
for (; index < HELPERS ; index++, cpu++, order++) {
// if we have used all cpus, stop
if (cpu == ddump_nr_cpus) {
break;
}
// we don't want to assign any helper to the current cpu
if (cpu == ddump_current_cpu) {
cpu++;
}
tmp_thread = kthread_create(ddump_percpu_thread,
(void *)(long)index,
"ddump_helper/%d",
cpu);
printk("James kthread %p\n", tmp_thread);
ddump_thread_helper[index].cp_thread = tmp_thread;
ddump_thread_helper[index].cp_order = order;
// bind thread to the cpu
if (likely(!IS_ERR(ddump_thread_helper[index].cp_thread))) {
ddump_thread_helper[index].cp_cpu = cpu;
//kthread_bind(tmp_thread, cpu);
} else {
// cant create thread
// in real case, do single thread
panic("CANT create ddump helper\n");
}
wake_up_process(tmp_thread);
}
max_helpers = index;
}
/**
* This function, called by the idle process (within 'idleproc_run'), creates the
* process commonly refered to as the "init" process, which should have PID 1.
*
* The init process should contain a thread which begins execution in
* initproc_run().
*
* @return a pointer to a newly created thread which will execute
* initproc_run when it begins executing
*/
static kthread_t *
initproc_create(void)
{
proc_t *process1=proc_create("Init_process");
KASSERT(process1!=NULL);
dbg(DBG_INIT,"(GRADING1 1.b) Init Process created successfully\n" );
kthread_t *thread1=kthread_create(process1,initproc_run,1,(void*)1);
KASSERT(PID_INIT == process1->p_pid);
dbg(DBG_INIT,"(GRADING1 1.b) Init process's pid assigned properly\n");
KASSERT(thread1 != NULL);
dbg(DBG_INIT,"(GRADING1 1.b) Init process's thread created successfully\n");
/* dbg(DBG_INIT,"thread1_returned");*/
return thread1;
}
/**
* This function is called from kmain, however it is not running in a
* thread context yet. It should create the idle process which will
* start executing idleproc_run() in a real thread context. To start
* executing in the new process's context call context_make_active(),
* passing in the appropriate context. This function should _NOT_
* return.
*
* Note: Don't forget to set curproc and curthr appropriately.
*
* @param arg1 the first argument (unused)
* @param arg2 the second argument (unused)
*/
static void *
bootstrap(int arg1, void *arg2)
{
/* necessary to finalize page table information */
pt_template_init();
/* Create idle process and idle thread */
curproc = proc_create("idle");
curthr = kthread_create(curproc, (kthread_func_t) idleproc_run, NULL, NULL);
dbg_print("Created idle proc and thread\n");
/* Make idle thread the active context */
context_make_active(&curthr->kt_ctx);
/* NOT_YET_IMPLEMENTED("PROCS: bootstrap"); */
panic("weenix returned to bootstrap()!!! BAD!!!\n");
return NULL;
}
static void htckovsky_oj_start_polling(void) {
struct task_struct *nthread;
mutex_lock(&htckovsky_oj.lock);
if (htckovsky_oj.task) {
goto done;
}
nthread = kthread_create(htckovsky_oj_thread, NULL, "oj_thread");
if (!nthread) {
pr_err(MODULE_NAME": failed to start OJ refresh thread\n");
goto done;
}
wake_up_process(nthread);
htckovsky_oj.task = nthread;
done:
mutex_unlock(&htckovsky_oj.lock);
}
/**
* This function is called from kmain, however it is not running in a
* thread context yet. It should create the idle process which will
* start executing idleproc_run() in a real thread context. To start
* executing in the new process's context call context_make_active(),
* passing in the appropriate context. This function should _NOT_
* return.
*
* Note: Don't forget to set curproc and curthr appropriately.
*
* @param arg1 the first argument (unused)
* @param arg2 the second argument (unused)
*/
static void *bootstrap(int arg1, void *arg2)
{
/* necessary to finalize page table information */
pt_template_init();
char name[]="IDLE";
curproc=proc_create(name);
KASSERT(curproc != NULL && "Could not create Idle process"); /* make sure that the "idle" process has been created successfully */
KASSERT(curproc->p_pid == PID_IDLE);
KASSERT(PID_IDLE == curproc->p_pid && "Process created is not Idle");
curthr=kthread_create(curproc,idleproc_run,arg1,arg2);
KASSERT(curthr != NULL && "Could not create thread for Idle process");
context_make_active(&(curthr->kt_ctx));
NOT_YET_IMPLEMENTED("PROCS: bootstrap");
panic("weenix returned to bootstrap()!!! BAD!!!\n");
return NULL;
}
/* begin: add by wufan w00163571 for use kernel thread kick watchdog 20121201 */
static int k3_wdt_kick_start_oncpu(int cpu)
{
int err = 0;
struct task_struct *p = per_cpu(k3wdt_kick_watchdog_task, cpu);
if (!p) {
p = kthread_create(k3wdt_kick_threadfunc, (void *)(unsigned long)cpu, "k3wdt_kicktask/%d", cpu);
if (IS_ERR(p)) {
printk(KERN_ERR "softlockup watchdog for %i failed\n", cpu);
err = PTR_ERR(p);
goto out;
}
kthread_bind(p, cpu);
per_cpu(k3wdt_kick_watchdog_task, cpu) = p;
wake_up_process(p);
}
out:
return err;
}
int ep952_thread_enable(void)
{
int err;
if(ep952_task)
return 0;
ep952_task = kthread_create(ep952_thread, NULL, "ep952_task");
if(IS_ERR(ep952_task)){
printk("Unable to start kernel thread./n");
err = PTR_ERR(ep952_task);
ep952_task = NULL;
return err;
} else {
wake_up_process(ep952_task);
}
return 0;
}
/* returns 0 for failure, 1 for success */
int
uisthread_start(struct uisthread_info *thrinfo,
int (*threadfn)(void *), void *thrcontext, char *name)
{
thrinfo->should_stop = 0;
/* used to stop the thread */
init_completion(&thrinfo->has_stopped);
thrinfo->task = kthread_create(threadfn, thrcontext, name, NULL);
if (IS_ERR(thrinfo->task)) {
thrinfo->id = 0;
return 0; /* failure */
}
thrinfo->id = thrinfo->task->pid;
wake_up_process(thrinfo->task);
LOGINF("started thread pid:%d\n", thrinfo->id);
return 1;
}
int vc_start_streaming( struct vb2_queue * q, unsigned int count )
{
struct vc_device * dev;
PRINT_DEBUG( "start streaming vb called, count = %d\n", count);
dev = q->drv_priv;
//Try to start kernel thread
dev->sub_thr_id = kthread_create( submitter_thread, dev, "vcam_submitter");
if( !dev->sub_thr_id ){
PRINT_ERROR("Failed to create kernel thread\n");
return -ECANCELED;
}
wake_up_process(dev->sub_thr_id);
return 0;
}
static int __init init_thread(void)
{
printk(KERN_INFO "thread-1: Creating Thread\n");
thread_st = kthread_create(thread_fn, NULL, "thread-1");
if (thread_st)
{
/*
* Thread created and not in running state.
* Call wake_up_process to run it.
*/
printk(KERN_INFO "thread-1: Thread Created successfully\n");
}
else
{
printk(KERN_ERR "thread-1: Thread creation failed\n");
}
return 0;
}
VCOS_STATUS_T vcos_thread_create(VCOS_THREAD_T *thread,
const char *name,
VCOS_THREAD_ATTR_T *attrs,
VCOS_THREAD_ENTRY_FN_T entry,
void *arg)
{
VCOS_STATUS_T st;
struct task_struct *kthread;
memset(thread, 0, sizeof(*thread));
thread->magic = VCOS_THREAD_MAGIC;
strlcpy( thread->name, name, sizeof( thread->name ));
thread->legacy = attrs ? attrs->legacy : 0;
thread->entry = entry;
thread->arg = arg;
if (!name)
{
vcos_assert(0);
return VCOS_EINVAL;
}
st = vcos_semaphore_create(&thread->wait, NULL, 0);
if (st != VCOS_SUCCESS)
{
return st;
}
st = vcos_semaphore_create(&thread->suspend, NULL, 0);
if (st != VCOS_SUCCESS)
{
return st;
}
/*required for event groups */
vcos_timer_create(&thread->_timer.timer, thread->name, NULL, NULL);
kthread = kthread_create((int (*)(void *))vcos_thread_wrapper, (void*)thread, name);
vcos_assert(kthread != NULL);
set_user_nice(kthread, attrs->ta_priority);
thread->thread.thread = kthread;
wake_up_process(kthread);
return VCOS_SUCCESS;
}
void
taskq_create_thread(void *arg)
{
struct taskq *tq = arg;
int rv;
mtx_enter(&tq->tq_mtx);
switch (tq->tq_state) {
case TQ_S_DESTROYED:
mtx_leave(&tq->tq_mtx);
free(tq, M_DEVBUF, sizeof(*tq));
return;
case TQ_S_CREATED:
tq->tq_state = TQ_S_RUNNING;
break;
default:
panic("unexpected %s tq state %d", tq->tq_name, tq->tq_state);
}
do {
tq->tq_running++;
mtx_leave(&tq->tq_mtx);
rv = kthread_create(taskq_thread, tq, NULL, tq->tq_name);
mtx_enter(&tq->tq_mtx);
if (rv != 0) {
printf("unable to create thread for \"%s\" taskq\n",
tq->tq_name);
tq->tq_running--;
/* could have been destroyed during kthread_create */
if (tq->tq_state == TQ_S_DESTROYED &&
tq->tq_running == 0)
wakeup_one(&tq->tq_running);
break;
}
} while (tq->tq_running < tq->tq_nthreads);
mtx_leave(&tq->tq_mtx);
}
static int __init
tfw_bmb_init(void)
{
long i;
volatile unsigned long ts_start;
struct task_struct *task;
int r = 0;
if (tfw_addr_pton(&TFW_STR_FROM(server), &bmb_server_address)) {
TFW_ERR("Unable to parse server's address: %s", server);
return -EINVAL;
}
TFW_LOG("Started bomber module, server's address is %s\n", server);
if (tfw_bmb_alloc())
return -ENOMEM;
ts_start = jiffies;
for (i = 0; i < nthreads; i++) {
task = kthread_create(tfw_bmb_worker, (void *)i, "worker");
if (IS_ERR_OR_NULL(task)) {
TFW_ERR("Unable to create worker\n");
r = -EINVAL;
goto stop_threads;
}
bmb_task[i].task_struct = task;
}
atomic_set(&bmb_threads, nthreads);
for (i = 0; i < nthreads; i++)
wake_up_process(bmb_task[i].task_struct);
wait_event_interruptible(bmb_task_wq, !atomic_read(&bmb_threads));
tfw_bmb_report(ts_start);
stop_threads:
tfw_bmb_stop_threads();
tfw_bmb_free();
return r;
}
/*! initialize thread structures and create idle thread */
void kthreads_init ()
{
list_init ( &all_threads );
list_init ( &procs );
active_thread = NULL;
ksched_init ();
/* initially create 'idle thread' */
kernel_proc.prog = NULL;
kernel_proc.stack_pool = NULL; /* use kernel pool */
kernel_proc.m.start = NULL;
kernel_proc.m.size = (size_t) 0xffffffff;
(void) kthread_create ( idle_thread, NULL, 0, SCHED_FIFO, 0, NULL,
NULL, 0, &kernel_proc );
kthreads_schedule ();
}
int do_faber(kshell_t *kshell, int argc, char **argv)
{
/*
* Shouldn't call a test function directly.
* It's best to invoke it in a separate kernel process.
*/
proc_t *new_proc;
kthread_t *new_thr;
new_proc = proc_create("new");
new_thr = kthread_create(new_proc, faber_thread_test, 0, NULL);
sched_make_runnable(new_thr);
int status;
pid_t child = do_waitpid(-1, 0, &status);
return 0;
}
int disp_init_irq(void)
{
static char * device_name="mtk_disp";
if(irq_init)
return 0;
irq_init = 1;
DDPMSG("disp_init_irq\n");
//create irq log thread
init_waitqueue_head(&disp_irq_log_wq);
disp_irq_log_task = kthread_create(disp_irq_log_kthread_func, NULL, "ddp_irq_log_kthread");
if (IS_ERR(disp_irq_log_task)) {
DDPERR(" can not create disp_irq_log_task kthread\n");
}
//wake_up_process(disp_irq_log_task);
return 0;
}
int hang_detect_init(void) {
struct task_struct *hd_thread ;
//struct proc_dir_entry *de = create_proc_entry(HD_PROC, 0664, 0);
unsigned char *name = "hang_detect" ;
printk("[Hang_Detect] Initialize proc\n");
//de->read_proc = hd_proc_cmd_read;
//de->write_proc = hd_proc_cmd_write;
printk("[Hang_Detect] create hang_detect thread\n");
hd_thread = kthread_create(hang_detect_thread, NULL, name);
wake_up_process(hd_thread);
return 0 ;
}
void inline GetElapsedTime(void) {
int i;
void* data = NULL;
for (i = 0; i < ITERATIONS; i++) {
// Data required for thread creation.
static struct task_struct *thread;
char our_thread[8]="thread";
struct timespec ts_start;
getnstimeofday(&ts_start);
data = &ts_start;
printk(KERN_CRIT "Thread create\n");
thread = kthread_create(thread_fn,data,our_thread);
if(thread) {
wake_up_process(thread);
}
kthread_stop(thread);
}
return;
}
DECLHIDDEN(int) rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread)
{
int rc;
struct proc *pProc;
#if __FreeBSD_version >= 800002
rc = kproc_create(rtThreadNativeMain, pThreadInt, &pProc, RFHIGHPID, 0, "%s", pThreadInt->szName);
#else
rc = kthread_create(rtThreadNativeMain, pThreadInt, &pProc, RFHIGHPID, 0, "%s", pThreadInt->szName);
#endif
if (!rc)
{
*pNativeThread = (RTNATIVETHREAD)FIRST_THREAD_IN_PROC(pProc);
rc = VINF_SUCCESS;
}
else
rc = RTErrConvertFromErrno(rc);
return rc;
}
static int start_kicker(void)
{
int i;
wk_cpu_update_bit_flag(0, 1);
for (i = 0; i < CPU_NR; i++) {
wk_tsk[i] = kthread_create(kwdt_thread, (void *)(unsigned long)i, "wdtk-%d", i);
if (IS_ERR(wk_tsk[i])) {
int ret = PTR_ERR(wk_tsk[i]);
wk_tsk[i] = NULL;
return ret;
}
/* wk_cpu_update_bit_flag(i,1); */
wk_start_kick_cpu(i);
}
g_kicker_init = 1;
printk("[WDK] WDT start kicker done\n");
return 0;
}
static void
pagezero_start(void __unused *arg)
{
int error;
error = kthread_create(vm_pagezero, NULL, &pagezero_proc, RFSTOPPED, 0,
"pagezero");
if (error)
panic("pagezero_start: error %d\n", error);
/*
* We're an idle task, don't count us in the load.
*/
PROC_LOCK(pagezero_proc);
pagezero_proc->p_flag |= P_NOLOAD;
PROC_UNLOCK(pagezero_proc);
mtx_lock_spin(&sched_lock);
setrunqueue(FIRST_THREAD_IN_PROC(pagezero_proc), SRQ_BORING);
mtx_unlock_spin(&sched_lock);
}
int blockdev_register(struct inode *node, struct blockctl *ctl)
{
struct blockdev *bd = kmalloc(sizeof(struct blockdev));
mutex_create(&ctl->cachelock, 0);
hash_create(&ctl->cache, 0, 0x4000);
mpscq_create(&ctl->queue, 1000);
bd->ctl = ctl;
int num = atomic_fetch_add(&next_minor, 1);
node->devdata = bd;
node->phys_dev = GETDEV(block_major, num);
node->kdev = dm_device_get(block_major);
kthread_create(&ctl->elevator, "[kelevator]", 0, block_elevator_main, node);
char name[64];
snprintf(name, 64, "/dev/bcache-%d", num);
kerfs_register_parameter(name, ctl, 0, 0, kerfs_block_cache_report);
return num;
}
void
rumptest_tsleep()
{
struct lwp *notbigl[NTHREADS];
int rv, i;
mutex_init(&mymtx, MUTEX_DEFAULT, IPL_NONE);
for (i = 0; i < NTHREADS; i++) {
rv = kthread_create(PRI_NONE, KTHREAD_MUSTJOIN| KTHREAD_MPSAFE,
NULL, tinythread, (void *)(uintptr_t)i, ¬bigl[i], "nb");
if (rv)
panic("thread create failed: %d", rv);
}
for (i = 0; i < NTHREADS; i++) {
kthread_join(notbigl[i]);
}
}
static int completion_load(void)
{
pr_info("%s\n", __func__);
my_thread = kthread_create(kthread_func, NULL, "%s",
"udemy kthread");
if (IS_ERR(my_thread)) {
pr_info("%s: cannot create kernel thread\n", __func__);
return PTR_ERR(my_thread);
}
/* Protect my_thread from being freed by the kernel */
get_task_struct(my_thread);
/* Kick the thread */
wake_up_process(my_thread);
return 0;
}
