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Diffstat (limited to 'kernel/softirq.c')
-rw-r--r--kernel/softirq.c46
1 files changed, 24 insertions, 22 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 18f4be0d5fe..0823778f87f 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -70,7 +70,7 @@ char *softirq_to_name[NR_SOFTIRQS] = {
static void wakeup_softirqd(void)
{
/* Interrupts are disabled: no need to stop preemption */
- struct task_struct *tsk = __get_cpu_var(ksoftirqd);
+ struct task_struct *tsk = __this_cpu_read(ksoftirqd);
if (tsk && tsk->state != TASK_RUNNING)
wake_up_process(tsk);
@@ -388,8 +388,8 @@ void __tasklet_schedule(struct tasklet_struct *t)
local_irq_save(flags);
t->next = NULL;
- *__get_cpu_var(tasklet_vec).tail = t;
- __get_cpu_var(tasklet_vec).tail = &(t->next);
+ *__this_cpu_read(tasklet_vec.tail) = t;
+ __this_cpu_write(tasklet_vec.tail, &(t->next));
raise_softirq_irqoff(TASKLET_SOFTIRQ);
local_irq_restore(flags);
}
@@ -402,8 +402,8 @@ void __tasklet_hi_schedule(struct tasklet_struct *t)
local_irq_save(flags);
t->next = NULL;
- *__get_cpu_var(tasklet_hi_vec).tail = t;
- __get_cpu_var(tasklet_hi_vec).tail = &(t->next);
+ *__this_cpu_read(tasklet_hi_vec.tail) = t;
+ __this_cpu_write(tasklet_hi_vec.tail, &(t->next));
raise_softirq_irqoff(HI_SOFTIRQ);
local_irq_restore(flags);
}
@@ -414,8 +414,8 @@ void __tasklet_hi_schedule_first(struct tasklet_struct *t)
{
BUG_ON(!irqs_disabled());
- t->next = __get_cpu_var(tasklet_hi_vec).head;
- __get_cpu_var(tasklet_hi_vec).head = t;
+ t->next = __this_cpu_read(tasklet_hi_vec.head);
+ __this_cpu_write(tasklet_hi_vec.head, t);
__raise_softirq_irqoff(HI_SOFTIRQ);
}
@@ -426,9 +426,9 @@ static void tasklet_action(struct softirq_action *a)
struct tasklet_struct *list;
local_irq_disable();
- list = __get_cpu_var(tasklet_vec).head;
- __get_cpu_var(tasklet_vec).head = NULL;
- __get_cpu_var(tasklet_vec).tail = &__get_cpu_var(tasklet_vec).head;
+ list = __this_cpu_read(tasklet_vec.head);
+ __this_cpu_write(tasklet_vec.head, NULL);
+ __this_cpu_write(tasklet_vec.tail, &__get_cpu_var(tasklet_vec).head);
local_irq_enable();
while (list) {
@@ -449,8 +449,8 @@ static void tasklet_action(struct softirq_action *a)
local_irq_disable();
t->next = NULL;
- *__get_cpu_var(tasklet_vec).tail = t;
- __get_cpu_var(tasklet_vec).tail = &(t->next);
+ *__this_cpu_read(tasklet_vec.tail) = t;
+ __this_cpu_write(tasklet_vec.tail, &(t->next));
__raise_softirq_irqoff(TASKLET_SOFTIRQ);
local_irq_enable();
}
@@ -461,9 +461,9 @@ static void tasklet_hi_action(struct softirq_action *a)
struct tasklet_struct *list;
local_irq_disable();
- list = __get_cpu_var(tasklet_hi_vec).head;
- __get_cpu_var(tasklet_hi_vec).head = NULL;
- __get_cpu_var(tasklet_hi_vec).tail = &__get_cpu_var(tasklet_hi_vec).head;
+ list = __this_cpu_read(tasklet_hi_vec.head);
+ __this_cpu_write(tasklet_hi_vec.head, NULL);
+ __this_cpu_write(tasklet_hi_vec.tail, &__get_cpu_var(tasklet_hi_vec).head);
local_irq_enable();
while (list) {
@@ -484,8 +484,8 @@ static void tasklet_hi_action(struct softirq_action *a)
local_irq_disable();
t->next = NULL;
- *__get_cpu_var(tasklet_hi_vec).tail = t;
- __get_cpu_var(tasklet_hi_vec).tail = &(t->next);
+ *__this_cpu_read(tasklet_hi_vec.tail) = t;
+ __this_cpu_write(tasklet_hi_vec.tail, &(t->next));
__raise_softirq_irqoff(HI_SOFTIRQ);
local_irq_enable();
}
@@ -802,16 +802,16 @@ static void takeover_tasklets(unsigned int cpu)
/* Find end, append list for that CPU. */
if (&per_cpu(tasklet_vec, cpu).head != per_cpu(tasklet_vec, cpu).tail) {
- *(__get_cpu_var(tasklet_vec).tail) = per_cpu(tasklet_vec, cpu).head;
- __get_cpu_var(tasklet_vec).tail = per_cpu(tasklet_vec, cpu).tail;
+ *__this_cpu_read(tasklet_vec.tail) = per_cpu(tasklet_vec, cpu).head;
+ this_cpu_write(tasklet_vec.tail, per_cpu(tasklet_vec, cpu).tail);
per_cpu(tasklet_vec, cpu).head = NULL;
per_cpu(tasklet_vec, cpu).tail = &per_cpu(tasklet_vec, cpu).head;
}
raise_softirq_irqoff(TASKLET_SOFTIRQ);
if (&per_cpu(tasklet_hi_vec, cpu).head != per_cpu(tasklet_hi_vec, cpu).tail) {
- *__get_cpu_var(tasklet_hi_vec).tail = per_cpu(tasklet_hi_vec, cpu).head;
- __get_cpu_var(tasklet_hi_vec).tail = per_cpu(tasklet_hi_vec, cpu).tail;
+ *__this_cpu_read(tasklet_hi_vec.tail) = per_cpu(tasklet_hi_vec, cpu).head;
+ __this_cpu_write(tasklet_hi_vec.tail, per_cpu(tasklet_hi_vec, cpu).tail);
per_cpu(tasklet_hi_vec, cpu).head = NULL;
per_cpu(tasklet_hi_vec, cpu).tail = &per_cpu(tasklet_hi_vec, cpu).head;
}
@@ -853,7 +853,9 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb,
cpumask_any(cpu_online_mask));
case CPU_DEAD:
case CPU_DEAD_FROZEN: {
- struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
+ static const struct sched_param param = {
+ .sched_priority = MAX_RT_PRIO-1
+ };
p = per_cpu(ksoftirqd, hotcpu);
per_cpu(ksoftirqd, hotcpu) = NULL;