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linux-sg2042
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[SPARC]: Use kthread infrastructure in bbc_envctrl 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2005-08-09 13:32:25 -07:00 committed by David S. Miller
parent 218b29e0c3
commit bc2406684b
1 changed files with 10 additions and 29 deletions
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39
drivers/sbus/char/bbc_envctrl.c
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@ -7,6 +7,7 @@
#define __KERNEL_SYSCALLS__ #define __KERNEL_SYSCALLS__
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/delay.h> #include <linux/delay.h>
@ -459,10 +460,6 @@ static struct task_struct *kenvctrld_task;
static int kenvctrld(void *__unused) static int kenvctrld(void *__unused)
{ {
daemonize("kenvctrld");
allow_signal(SIGKILL);
kenvctrld_task = current;
printk(KERN_INFO "bbc_envctrl: kenvctrld starting...\n"); printk(KERN_INFO "bbc_envctrl: kenvctrld starting...\n");
last_warning_jiffies = jiffies - WARN_INTERVAL; last_warning_jiffies = jiffies - WARN_INTERVAL;
for (;;) { for (;;) {
@ -470,7 +467,7 @@ static int kenvctrld(void *__unused)
struct bbc_fan_control *fp; struct bbc_fan_control *fp;
msleep_interruptible(POLL_INTERVAL); msleep_interruptible(POLL_INTERVAL);
if (signal_pending(current)) if (kthread_should_stop())
break; break;
for (tp = all_bbc_temps; tp; tp = tp->next) { for (tp = all_bbc_temps; tp; tp = tp->next) {
@ -577,7 +574,6 @@ int bbc_envctrl_init(void)
int temp_index = 0; int temp_index = 0;
int fan_index = 0; int fan_index = 0;
int devidx = 0; int devidx = 0;
int err = 0;
while ((echild = bbc_i2c_getdev(devidx++)) != NULL) { while ((echild = bbc_i2c_getdev(devidx++)) != NULL) {
if (!strcmp(echild->prom_name, "temperature")) if (!strcmp(echild->prom_name, "temperature"))
@ -585,9 +581,13 @@ int bbc_envctrl_init(void)
if (!strcmp(echild->prom_name, "fan-control")) if (!strcmp(echild->prom_name, "fan-control"))
attach_one_fan(echild, fan_index++); attach_one_fan(echild, fan_index++);
} }
if (temp_index != 0 && fan_index != 0) if (temp_index != 0 && fan_index != 0) {
err = kernel_thread(kenvctrld, NULL, CLONE_FS | CLONE_FILES); kenvctrld_task = kthread_run(kenvctrld, NULL, "kenvctrld");
return err; if (IS_ERR(kenvctrld_task))
return PTR_ERR(kenvctrld_task);
}
return 0;
} }
static void destroy_one_temp(struct bbc_cpu_temperature *tp) static void destroy_one_temp(struct bbc_cpu_temperature *tp)
@ -607,26 +607,7 @@ void bbc_envctrl_cleanup(void)
struct bbc_cpu_temperature *tp; struct bbc_cpu_temperature *tp;
struct bbc_fan_control *fp; struct bbc_fan_control *fp;
if (kenvctrld_task != NULL) { kthread_stop(kenvctrld_task);
force_sig(SIGKILL, kenvctrld_task);
for (;;) {
struct task_struct *p;
int found = 0;
read_lock(&tasklist_lock);
for_each_process(p) {
if (p == kenvctrld_task) {
found = 1;
break;
}
}
read_unlock(&tasklist_lock);
if (!found)
break;
msleep(1000);
}
kenvctrld_task = NULL;
}
tp = all_bbc_temps; tp = all_bbc_temps;
while (tp != NULL) { while (tp != NULL) {