static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *off)
{
struct seq_file *seq = file->private_data;
struct qdio_irq *irq_ptr = seq->private;
struct qdio_q *q;
unsigned long val;
int ret, i;
if (!irq_ptr)
return 0;
ret = kstrtoul_from_user(ubuf, count, 10, &val);
if (ret)
return ret;
switch (val) {
case 0:
irq_ptr->perf_stat_enabled = 0;
memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
for_each_input_queue(irq_ptr, q, i)
memset(&q->q_stats, 0, sizeof(q->q_stats));
for_each_output_queue(irq_ptr, q, i)
memset(&q->q_stats, 0, sizeof(q->q_stats));
break;
case 1:
irq_ptr->perf_stat_enabled = 1;
break;
}
return count;
}
void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
{
struct qdio_q *q;
int i;
for_each_input_queue(irq_ptr, q, i)
debugfs_remove(q->debugfs_q);
for_each_output_queue(irq_ptr, q, i)
debugfs_remove(q->debugfs_q);
debugfs_remove(irq_ptr->debugfs_perf);
debugfs_remove(irq_ptr->debugfs_dev);
}
void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
{
struct qdio_q *q;
int i;
mutex_lock(&debugfs_mutex);
for_each_input_queue(irq_ptr, q, i)
remove_debugfs_entry(q);
for_each_output_queue(irq_ptr, q, i)
remove_debugfs_entry(q);
mutex_unlock(&debugfs_mutex);
}
void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
{
struct qdio_q *q;
int i;
irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev),
debugfs_root);
if (IS_ERR(irq_ptr->debugfs_dev))
irq_ptr->debugfs_dev = NULL;
irq_ptr->debugfs_perf = debugfs_create_file("statistics",
S_IFREG | S_IRUGO | S_IWUSR,
irq_ptr->debugfs_dev, irq_ptr,
&debugfs_perf_fops);
if (IS_ERR(irq_ptr->debugfs_perf))
irq_ptr->debugfs_perf = NULL;
for_each_input_queue(irq_ptr, q, i)
setup_debugfs_entry(q, cdev);
for_each_output_queue(irq_ptr, q, i)
setup_debugfs_entry(q, cdev);
}