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add restart of thread if killed by accident

This commit is contained in:
Karsten Keil 2005-10-20 22:54:43 +00:00
parent a3b6908c6f
commit bd1c13ae2b
3 changed files with 27 additions and 2 deletions
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1
drivers/isdn/hardware/mISDN/core.h
View File

@ -44,6 +44,7 @@ extern struct list_head mISDN_instlist;
extern void get_stack_info(struct sk_buff *);
extern int get_stack_cnt(void);
extern mISDNstack_t *get_stack4id(u_int);
extern int mISDN_start_stack_thread(mISDNstack_t *);
extern mISDNstack_t *new_stack(mISDNstack_t *, mISDNinstance_t *);
extern int mISDN_start_stop(mISDNstack_t *, int);
extern int release_stack(mISDNstack_t *);

17
drivers/isdn/hardware/mISDN/stack.c
View File

@ -571,6 +571,9 @@ mISDNStackd(void *data)
#endif
printk(KERN_DEBUG "mISDNStackd daemon for id(%08x) killed now\n", st->id);
test_and_set_bit(mISDN_STACK_KILLED, &st->status);
test_and_clear_bit(mISDN_STACK_RUNNING, &st->status);
test_and_clear_bit(mISDN_STACK_ACTIVE, &st->status);
test_and_clear_bit(mISDN_STACK_ABORT, &st->status);
discard_queue(&st->msgq);
st->thread = NULL;
if (st->notify != NULL) {
@ -580,6 +583,19 @@ mISDNStackd(void *data)
return(0);
}
int
mISDN_start_stack_thread(mISDNstack_t *st)
{
int err = 0;
if (st->thread == NULL && test_bit(mISDN_STACK_KILLED, &st->status)) {
test_and_clear_bit(mISDN_STACK_KILLED, &st->status);
kernel_thread(mISDNStackd, (void *)st, 0);
} else
err = -EBUSY;
return(err);
}
mISDNstack_t *
new_stack(mISDNstack_t *master, mISDNinstance_t *inst)
{
@ -599,7 +615,6 @@ new_stack(mISDNstack_t *master, mISDNinstance_t *inst)
INIT_LIST_HEAD(&newst->prereg);
init_waitqueue_head(&newst->workq);
skb_queue_head_init(&newst->msgq);
test_and_set_bit(mISDN_STACK_INIT, &newst->status);
if (!master) {
if (inst && inst->st) {
master = inst->st;

11
drivers/isdn/hardware/mISDN/sysfs_st.c
View File

@ -33,7 +33,8 @@ static ssize_t store_st_status(struct class_device *class_dev, const char *buf,
status = simple_strtol(buf, NULL, 0);
printk(KERN_DEBUG "%s: status %08lx\n", __FUNCTION__, status);
if (status == (1<<mISDN_STACK_INIT)) { /* we want to make st->new_pid activ */
if (status == (1<<mISDN_STACK_INIT)) {
/* we want to make st->new_pid activ */
err = clear_stack(st, 1);
if (err) {
int_errtxt("clear_stack:%d", err);
@ -45,6 +46,14 @@ static ssize_t store_st_status(struct class_device *class_dev, const char *buf,
return(err);
}
return(count);
} else if (status == (1<<mISDN_STACK_THREADSTART)) {
/* we want to start a new process after abort */
err = mISDN_start_stack_thread(st);
if (err) {
int_errtxt("start_stack_thread:%d", err);
return(err);
}
return(count);
}
st->status = status;
wake_up_interruptible(&st->workq);