usermodehelper: Tidy up waiting

[sfrench/cifs-2.6.git] / kernel / softirq.c

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 8b75008e2bd84bc91db15681896ab1a631091378..0f546ddea43df41debcf42507ede2ac6873c80a9 100644 (file)
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -14,6 +14,7 @@
 #include <linux/notifier.h>
 #include <linux/percpu.h>
 #include <linux/cpu.h>
+#include <linux/freezer.h>
 #include <linux/kthread.h>
 #include <linux/rcupdate.h>
 #include <linux/smp.h>
@@ -488,9 +489,6 @@ void __init softirq_init(void)
 
 static int ksoftirqd(void * __bind_cpu)
 {
-       set_user_nice(current, 19);
-       current->flags |= PF_NOFREEZE;
-
        set_current_state(TASK_INTERRUPTIBLE);
 
        while (!kthread_should_stop()) {
@@ -593,6 +591,7 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb,
 
        switch (action) {
        case CPU_UP_PREPARE:
+       case CPU_UP_PREPARE_FROZEN:
                p = kthread_create(ksoftirqd, hcpu, "ksoftirqd/%d", hotcpu);
                if (IS_ERR(p)) {
                        printk("ksoftirqd for %i failed\n", hotcpu);
@@ -602,21 +601,28 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb,
                per_cpu(ksoftirqd, hotcpu) = p;
                break;
        case CPU_ONLINE:
+       case CPU_ONLINE_FROZEN:
                wake_up_process(per_cpu(ksoftirqd, hotcpu));
                break;
 #ifdef CONFIG_HOTPLUG_CPU
        case CPU_UP_CANCELED:
+       case CPU_UP_CANCELED_FROZEN:
                if (!per_cpu(ksoftirqd, hotcpu))
                        break;
                /* Unbind so it can run.  Fall thru. */
                kthread_bind(per_cpu(ksoftirqd, hotcpu),
                             any_online_cpu(cpu_online_map));
        case CPU_DEAD:
+       case CPU_DEAD_FROZEN: {
+               struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
+
                p = per_cpu(ksoftirqd, hotcpu);
                per_cpu(ksoftirqd, hotcpu) = NULL;
+               sched_setscheduler(p, SCHED_FIFO, &param);
                kthread_stop(p);
                takeover_tasklets(hotcpu);
                break;
+       }
 #endif /* CONFIG_HOTPLUG_CPU */
        }
        return NOTIFY_OK;