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path: root/drivers/s390/cio/qdio_debug.c
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Diffstat (limited to 'drivers/s390/cio/qdio_debug.c')
-rw-r--r--drivers/s390/cio/qdio_debug.c136
1 files changed, 126 insertions, 10 deletions
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index 76769978285f..6ce83f56d537 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -33,7 +33,6 @@ void qdio_allocate_dbf(struct qdio_initialize *init_data,
DBF_HEX(&init_data->input_handler, sizeof(void *));
DBF_HEX(&init_data->output_handler, sizeof(void *));
DBF_HEX(&init_data->int_parm, sizeof(long));
- DBF_HEX(&init_data->flags, sizeof(long));
DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *));
DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *));
DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr);
@@ -55,14 +54,12 @@ static int qstat_show(struct seq_file *m, void *v)
if (!q)
return 0;
- seq_printf(m, "device state indicator: %d\n", *(u32 *)q->irq_ptr->dsci);
- seq_printf(m, "nr_used: %d\n", atomic_read(&q->nr_buf_used));
- seq_printf(m, "ftc: %d\n", q->first_to_check);
- seq_printf(m, "last_move: %d\n", q->last_move);
- seq_printf(m, "polling: %d\n", q->u.in.polling);
- seq_printf(m, "ack start: %d\n", q->u.in.ack_start);
- seq_printf(m, "ack count: %d\n", q->u.in.ack_count);
- seq_printf(m, "slsb buffer states:\n");
+ seq_printf(m, "DSCI: %d nr_used: %d\n",
+ *(u32 *)q->irq_ptr->dsci, atomic_read(&q->nr_buf_used));
+ seq_printf(m, "ftc: %d last_move: %d\n", q->first_to_check, q->last_move);
+ seq_printf(m, "polling: %d ack start: %d ack count: %d\n",
+ q->u.in.polling, q->u.in.ack_start, q->u.in.ack_count);
+ seq_printf(m, "SBAL states:\n");
seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n");
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
@@ -99,6 +96,20 @@ static int qstat_show(struct seq_file *m, void *v)
}
seq_printf(m, "\n");
seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n");
+
+ seq_printf(m, "\nSBAL statistics:");
+ if (!q->irq_ptr->perf_stat_enabled) {
+ seq_printf(m, " disabled\n");
+ return 0;
+ }
+
+ seq_printf(m, "\n1 2.. 4.. 8.. "
+ "16.. 32.. 64.. 127\n");
+ for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++)
+ seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]);
+ seq_printf(m, "\nError NOP Total\n%-10u %-10u %-10u\n\n",
+ q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop,
+ q->q_stats.nr_sbal_total);
return 0;
}
@@ -110,7 +121,6 @@ static ssize_t qstat_seq_write(struct file *file, const char __user *buf,
if (!q)
return 0;
-
if (q->is_input_q)
xchg(q->irq_ptr->dsci, 1);
local_bh_disable();
@@ -134,6 +144,103 @@ static const struct file_operations debugfs_fops = {
.release = single_release,
};
+static char *qperf_names[] = {
+ "Assumed adapter interrupts",
+ "QDIO interrupts",
+ "Requested PCIs",
+ "Inbound tasklet runs",
+ "Inbound tasklet resched",
+ "Inbound tasklet resched2",
+ "Outbound tasklet runs",
+ "SIGA read",
+ "SIGA write",
+ "SIGA sync",
+ "Inbound calls",
+ "Inbound handler",
+ "Inbound stop_polling",
+ "Inbound queue full",
+ "Outbound calls",
+ "Outbound handler",
+ "Outbound fast_requeue",
+ "Outbound target_full",
+ "QEBSM eqbs",
+ "QEBSM eqbs partial",
+ "QEBSM sqbs",
+ "QEBSM sqbs partial"
+};
+
+static int qperf_show(struct seq_file *m, void *v)
+{
+ struct qdio_irq *irq_ptr = m->private;
+ unsigned int *stat;
+ int i;
+
+ if (!irq_ptr)
+ return 0;
+ if (!irq_ptr->perf_stat_enabled) {
+ seq_printf(m, "disabled\n");
+ return 0;
+ }
+ stat = (unsigned int *)&irq_ptr->perf_stat;
+
+ for (i = 0; i < ARRAY_SIZE(qperf_names); i++)
+ seq_printf(m, "%26s:\t%u\n",
+ qperf_names[i], *(stat + i));
+ return 0;
+}
+
+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;
+ char buf[8];
+ int ret, i;
+
+ if (!irq_ptr)
+ return 0;
+ if (count >= sizeof(buf))
+ return -EINVAL;
+ if (copy_from_user(&buf, ubuf, count))
+ return -EFAULT;
+ buf[count] = 0;
+
+ ret = strict_strtoul(buf, 10, &val);
+ if (ret < 0)
+ 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;
+}
+
+static int qperf_seq_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, qperf_show,
+ filp->f_path.dentry->d_inode->i_private);
+}
+
+static struct file_operations debugfs_perf_fops = {
+ .owner = THIS_MODULE,
+ .open = qperf_seq_open,
+ .read = seq_read,
+ .write = qperf_seq_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev)
{
char name[QDIO_DEBUGFS_NAME_LEN];
@@ -156,6 +263,14 @@ void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
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)
@@ -171,6 +286,7 @@ void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cd
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);
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-31 16:16:04 +0300