s390/qdio: export SSQD via debugfs
While we print out various SSQD fields at initialization time, having
raw & full access to the current SSQD can help with debugging.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index bf8d825..8544fad 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -190,6 +190,23 @@
DEFINE_SHOW_ATTRIBUTE(qstat);
+static int ssqd_show(struct seq_file *m, void *v)
+{
+ struct ccw_device *cdev = m->private;
+ struct qdio_ssqd_desc ssqd;
+ int rc;
+
+ rc = qdio_get_ssqd_desc(cdev, &ssqd);
+ if (rc)
+ return rc;
+
+ seq_hex_dump(m, "", DUMP_PREFIX_NONE, 16, 4, &ssqd, sizeof(ssqd),
+ false);
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(ssqd);
+
static char *qperf_names[] = {
"Assumed adapter interrupts",
"QDIO interrupts",
@@ -303,6 +320,8 @@
debugfs_root);
debugfs_create_file("statistics", S_IFREG | S_IRUGO | S_IWUSR,
irq_ptr->debugfs_dev, irq_ptr, &debugfs_perf_fops);
+ debugfs_create_file("ssqd", 0444, irq_ptr->debugfs_dev, cdev,
+ &ssqd_fops);
for_each_input_queue(irq_ptr, q, i)
setup_debugfs_entry(irq_ptr->debugfs_dev, q);