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authorSerge E. Hallyn <serue@us.ibm.com>2006-08-07 11:57:36 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-09-27 23:17:54 +0100
commitea33a59802f8fd21d24fbf5c906bc3f399bcca00 (patch)
tree56358371c405fccf95230fe22e74be9c8bef89d7 /arch
parentd1d8f7dec179a421d6d449ddcd1713ed55db40be (diff)
downloadlinaro-lsk-ea33a59802f8fd21d24fbf5c906bc3f399bcca00.tar.gz
[ARM] kthread: switch arch/arm/kernel/apm.c
Switch arch/arm/kernel/apm.c from using kernel_thread - whose export is deprecated - to kthread. Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/apm.c33
1 files changed, 13 insertions, 20 deletions
diff --git a/arch/arm/kernel/apm.c b/arch/arm/kernel/apm.c
index 33c55689f99..ecf4f9472d9 100644
--- a/arch/arm/kernel/apm.c
+++ b/arch/arm/kernel/apm.c
@@ -25,6 +25,7 @@
#include <linux/list.h>
#include <linux/init.h>
#include <linux/completion.h>
+#include <linux/kthread.h>
#include <asm/apm.h> /* apm_power_info */
#include <asm/system.h>
@@ -80,7 +81,7 @@ struct apm_user {
*/
static int suspends_pending;
static int apm_disabled;
-static int arm_apm_active;
+static struct task_struct *kapmd_tsk;
static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
@@ -97,7 +98,6 @@ static LIST_HEAD(apm_user_list);
* to be suspending the system.
*/
static DECLARE_WAIT_QUEUE_HEAD(kapmd_wait);
-static DECLARE_COMPLETION(kapmd_exit);
static DEFINE_SPINLOCK(kapmd_queue_lock);
static struct apm_queue kapmd_queue;
@@ -468,16 +468,13 @@ static int apm_get_info(char *buf, char **start, off_t fpos, int length)
static int kapmd(void *arg)
{
- daemonize("kapmd");
- current->flags |= PF_NOFREEZE;
-
do {
apm_event_t event;
wait_event_interruptible(kapmd_wait,
- !queue_empty(&kapmd_queue) || !arm_apm_active);
+ !queue_empty(&kapmd_queue) || kthread_should_stop());
- if (!arm_apm_active)
+ if (kthread_should_stop())
break;
spin_lock_irq(&kapmd_queue_lock);
@@ -508,7 +505,7 @@ static int kapmd(void *arg)
}
} while (1);
- complete_and_exit(&kapmd_exit, 0);
+ return 0;
}
static int __init apm_init(void)
@@ -520,13 +517,14 @@ static int __init apm_init(void)
return -ENODEV;
}
- arm_apm_active = 1;
-
- ret = kernel_thread(kapmd, NULL, CLONE_KERNEL);
- if (ret < 0) {
- arm_apm_active = 0;
+ kapmd_tsk = kthread_create(kapmd, NULL, "kapmd");
+ if (IS_ERR(kapmd_tsk)) {
+ ret = PTR_ERR(kapmd_tsk);
+ kapmd_tsk = NULL;
return ret;
}
+ kapmd_tsk->flags |= PF_NOFREEZE;
+ wake_up_process(kapmd_tsk);
#ifdef CONFIG_PROC_FS
create_proc_info_entry("apm", 0, NULL, apm_get_info);
@@ -535,10 +533,7 @@ static int __init apm_init(void)
ret = misc_register(&apm_device);
if (ret != 0) {
remove_proc_entry("apm", NULL);
-
- arm_apm_active = 0;
- wake_up(&kapmd_wait);
- wait_for_completion(&kapmd_exit);
+ kthread_stop(kapmd_tsk);
}
return ret;
@@ -549,9 +544,7 @@ static void __exit apm_exit(void)
misc_deregister(&apm_device);
remove_proc_entry("apm", NULL);
- arm_apm_active = 0;
- wake_up(&kapmd_wait);
- wait_for_completion(&kapmd_exit);
+ kthread_stop(kapmd_tsk);
}
module_init(apm_init);