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Input: switch serio core to using kthread API instead of using 

daemonize() and signals. This way kseriod will never be
       accidentially killed.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2005-06-01 02:38:12 -05:00
parent 9d54329799
commit a9180ab2e2
1 changed files with 10 additions and 17 deletions
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27
drivers/input/serio/serio.c
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@ -31,10 +31,9 @@
#include <linux/serio.h>
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/completion.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/kthread.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Serio abstraction core");
@ -138,8 +137,7 @@ struct serio_event {
static DEFINE_SPINLOCK(serio_event_lock); /* protects serio_event_list */
static LIST_HEAD(serio_event_list);
static DECLARE_WAIT_QUEUE_HEAD(serio_wait);
static DECLARE_COMPLETION(serio_exited);
static int serio_pid;
static struct task_struct *serio_task;
static void serio_queue_event(void *object, struct module *owner,
enum serio_event_type event_type)
@ -337,20 +335,15 @@ static struct serio *serio_get_pending_child(struct serio *parent)
static int serio_thread(void *nothing)
{
lock_kernel();
daemonize("kseriod");
allow_signal(SIGTERM);
do {
serio_handle_events();
wait_event_interruptible(serio_wait, !list_empty(&serio_event_list));
wait_event_interruptible(serio_wait,
kthread_should_stop() || !list_empty(&serio_event_list));
try_to_freeze(PF_FREEZE);
} while (!signal_pending(current));
} while (!kthread_should_stop());
printk(KERN_DEBUG "serio: kseriod exiting\n");
unlock_kernel();
complete_and_exit(&serio_exited, 0);
return 0;
}
@ -848,9 +841,10 @@ irqreturn_t serio_interrupt(struct serio *serio,
static int __init serio_init(void)
{
if (!(serio_pid = kernel_thread(serio_thread, NULL, CLONE_KERNEL))) {
serio_task = kthread_run(serio_thread, NULL, "kseriod");
if (IS_ERR(serio_task)) {
printk(KERN_ERR "serio: Failed to start kseriod\n");
return -1;
return PTR_ERR(serio_task);
}
serio_bus.dev_attrs = serio_device_attrs;
@ -866,8 +860,7 @@ static int __init serio_init(void)
static void __exit serio_exit(void)
{
bus_unregister(&serio_bus);
kill_proc(serio_pid, SIGTERM, 1);
wait_for_completion(&serio_exited);
kthread_stop(serio_task);
}
module_init(serio_init);