diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/softirq.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index 3c44956ee7e2..36e061740047 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c | |||
| @@ -589,16 +589,20 @@ static void takeover_tasklets(unsigned int cpu) | |||
| 589 | local_irq_disable(); | 589 | local_irq_disable(); |
| 590 | 590 | ||
| 591 | /* Find end, append list for that CPU. */ | 591 | /* Find end, append list for that CPU. */ |
| 592 | *__get_cpu_var(tasklet_vec).tail = per_cpu(tasklet_vec, cpu).head; | 592 | if (&per_cpu(tasklet_vec, cpu).head != per_cpu(tasklet_vec, cpu).tail) { |
| 593 | __get_cpu_var(tasklet_vec).tail = per_cpu(tasklet_vec, cpu).tail; | 593 | *(__get_cpu_var(tasklet_vec).tail) = per_cpu(tasklet_vec, cpu).head; |
| 594 | per_cpu(tasklet_vec, cpu).head = NULL; | 594 | __get_cpu_var(tasklet_vec).tail = per_cpu(tasklet_vec, cpu).tail; |
| 595 | per_cpu(tasklet_vec, cpu).tail = &per_cpu(tasklet_vec, cpu).head; | 595 | per_cpu(tasklet_vec, cpu).head = NULL; |
| 596 | per_cpu(tasklet_vec, cpu).tail = &per_cpu(tasklet_vec, cpu).head; | ||
| 597 | } | ||
| 596 | raise_softirq_irqoff(TASKLET_SOFTIRQ); | 598 | raise_softirq_irqoff(TASKLET_SOFTIRQ); |
| 597 | 599 | ||
| 598 | *__get_cpu_var(tasklet_hi_vec).tail = per_cpu(tasklet_hi_vec, cpu).head; | 600 | if (&per_cpu(tasklet_hi_vec, cpu).head != per_cpu(tasklet_hi_vec, cpu).tail) { |
| 599 | __get_cpu_var(tasklet_hi_vec).tail = per_cpu(tasklet_hi_vec, cpu).tail; | 601 | *__get_cpu_var(tasklet_hi_vec).tail = per_cpu(tasklet_hi_vec, cpu).head; |
| 600 | per_cpu(tasklet_hi_vec, cpu).head = NULL; | 602 | __get_cpu_var(tasklet_hi_vec).tail = per_cpu(tasklet_hi_vec, cpu).tail; |
| 601 | per_cpu(tasklet_hi_vec, cpu).tail = &per_cpu(tasklet_hi_vec, cpu).head; | 603 | per_cpu(tasklet_hi_vec, cpu).head = NULL; |
| 604 | per_cpu(tasklet_hi_vec, cpu).tail = &per_cpu(tasklet_hi_vec, cpu).head; | ||
| 605 | } | ||
| 602 | raise_softirq_irqoff(HI_SOFTIRQ); | 606 | raise_softirq_irqoff(HI_SOFTIRQ); |
| 603 | 607 | ||
| 604 | local_irq_enable(); | 608 | local_irq_enable(); |