[S390] qdio: improve s390 debug feature usage

Improve s390 debug feature usage:
- log busy bit in dbf
- increase size of dbf views
- consistent logging of qdio api calls to setup view
- print subchannel number so one can associate the interface
  with the dbf data
- only log events to one view

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

3 files changed, 40 insertions, 42 deletions

diff --git a/drivers/s390/cio/qdio_debug.h b/drivers/s390/cio/qdio_debug.h
index 8484b83698e1..5a4d85b829ad 100644
--- a/drivers/s390/cio/qdio_debug.h
+++ b/drivers/s390/cio/qdio_debug.h
@@ -61,18 +61,18 @@
 
 /* s390dbf views */
 #define QDIO_DBF_SETUP_LEN              8
-#define QDIO_DBF_SETUP_PAGES            4
+#define QDIO_DBF_SETUP_PAGES            8
 #define QDIO_DBF_SETUP_NR_AREAS         1
 
 #define QDIO_DBF_TRACE_LEN              8
 #define QDIO_DBF_TRACE_NR_AREAS         2
 
 #ifdef CONFIG_QDIO_DEBUG
-#define QDIO_DBF_TRACE_PAGES            16
+#define QDIO_DBF_TRACE_PAGES            32
 #define QDIO_DBF_SETUP_LEVEL            6
 #define QDIO_DBF_TRACE_LEVEL            4
 #else /* !CONFIG_QDIO_DEBUG */
-#define QDIO_DBF_TRACE_PAGES            4
+#define QDIO_DBF_TRACE_PAGES            8
 #define QDIO_DBF_SETUP_LEVEL            2
 #define QDIO_DBF_TRACE_LEVEL            2
 #endif /* CONFIG_QDIO_DEBUG */
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index d15648514a0f..444fc7e521d4 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -330,6 +330,7 @@ static int qdio_siga_output(struct qdio_q *q)
         int cc;
         u32 busy_bit;
         u64 start_time = 0;
+        char dbf_text[15];
 
         QDIO_DBF_TEXT5(0, trace, "sigaout");
         QDIO_DBF_HEX5(0, trace, &q, sizeof(void *));
@@ -338,6 +339,9 @@ static int qdio_siga_output(struct qdio_q *q)
 again:
         cc = qdio_do_siga_output(q, &busy_bit);
         if (queue_type(q) == QDIO_IQDIO_QFMT && cc == 2 && busy_bit) {
+                sprintf(dbf_text, "bb%4x%2x", q->irq_ptr->schid.sch_no, q->nr);
+                QDIO_DBF_TEXT3(0, trace, dbf_text);
+
                 if (!start_time)
                         start_time = get_usecs();
                 else if ((get_usecs() - start_time) < QDIO_BUSY_BIT_PATIENCE)
@@ -748,16 +752,18 @@ static void qdio_kick_outbound_q(struct qdio_q *q)
         rc = qdio_siga_output(q);
         switch (rc) {
         case 0:
-                /* went smooth this time, reset timestamp */
-                q->u.out.timestamp = 0;
-
                 /* TODO: improve error handling for CC=0 case */
 #ifdef CONFIG_QDIO_DEBUG
-                QDIO_DBF_TEXT3(0, trace, "cc2reslv");
-                sprintf(dbf_text, "%4x%2x%2x", q->irq_ptr->schid.sch_no, q->nr,
-                        atomic_read(&q->u.out.busy_siga_counter));
-                QDIO_DBF_TEXT3(0, trace, dbf_text);
+                if (q->u.out.timestamp) {
+                        QDIO_DBF_TEXT3(0, trace, "cc2reslv");
+                        sprintf(dbf_text, "%4x%2x%2x", q->irq_ptr->schid.sch_no,
+                                q->nr,
+                                atomic_read(&q->u.out.busy_siga_counter));
+                        QDIO_DBF_TEXT3(0, trace, dbf_text);
+                }
 #endif /* CONFIG_QDIO_DEBUG */
+                /* went smooth this time, reset timestamp */
+                q->u.out.timestamp = 0;
                 break;
         /* cc=2 and busy bit */
         case (2 | QDIO_ERROR_SIGA_BUSY):
@@ -1066,14 +1072,12 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
         if (IS_ERR(irb)) {
                 switch (PTR_ERR(irb)) {
                 case -EIO:
-                        sprintf(dbf_text, "ierr%4x",
-                                cdev->private->schid.sch_no);
+                        sprintf(dbf_text, "ierr%4x", irq_ptr->schid.sch_no);
                         QDIO_DBF_TEXT2(1, setup, dbf_text);
                         qdio_int_error(cdev);
                         return;
                 case -ETIMEDOUT:
-                        sprintf(dbf_text, "qtoh%4x",
-                                cdev->private->schid.sch_no);
+                        sprintf(dbf_text, "qtoh%4x", irq_ptr->schid.sch_no);
                         QDIO_DBF_TEXT2(1, setup, dbf_text);
                         qdio_int_error(cdev);
                         return;
@@ -1124,8 +1128,10 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
 struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev)
 {
         struct qdio_irq *irq_ptr;
+        char dbf_text[15];
 
-        QDIO_DBF_TEXT0(0, setup, "getssqd");
+        sprintf(dbf_text, "qssq%4x", cdev->private->schid.sch_no);
+        QDIO_DBF_TEXT0(0, setup, dbf_text);
 
         irq_ptr = cdev->private->qdio_data;
         if (!irq_ptr)
@@ -1149,14 +1155,13 @@ int qdio_cleanup(struct ccw_device *cdev, int how)
         char dbf_text[15];
         int rc;
 
+        sprintf(dbf_text, "qcln%4x", cdev->private->schid.sch_no);
+        QDIO_DBF_TEXT0(0, setup, dbf_text);
+
         irq_ptr = cdev->private->qdio_data;
         if (!irq_ptr)
                 return -ENODEV;
 
-        sprintf(dbf_text, "qcln%4x", irq_ptr->schid.sch_no);
-        QDIO_DBF_TEXT1(0, trace, dbf_text);
-        QDIO_DBF_TEXT0(0, setup, dbf_text);
-
         rc = qdio_shutdown(cdev, how);
         if (rc == 0)
                 rc = qdio_free(cdev);
@@ -1191,6 +1196,9 @@ int qdio_shutdown(struct ccw_device *cdev, int how)
         unsigned long flags;
         char dbf_text[15];
 
+        sprintf(dbf_text, "qshu%4x", cdev->private->schid.sch_no);
+        QDIO_DBF_TEXT0(0, setup, dbf_text);
+
         irq_ptr = cdev->private->qdio_data;
         if (!irq_ptr)
                 return -ENODEV;
@@ -1205,10 +1213,6 @@ int qdio_shutdown(struct ccw_device *cdev, int how)
                 return 0;
         }
 
-        sprintf(dbf_text, "qsqs%4x", irq_ptr->schid.sch_no);
-        QDIO_DBF_TEXT1(0, trace, dbf_text);
-        QDIO_DBF_TEXT0(0, setup, dbf_text);
-
         tiqdio_remove_input_queues(irq_ptr);
         qdio_shutdown_queues(cdev);
         qdio_shutdown_debug_entries(irq_ptr, cdev);
@@ -1263,16 +1267,14 @@ int qdio_free(struct ccw_device *cdev)
         struct qdio_irq *irq_ptr;
         char dbf_text[15];
 
+        sprintf(dbf_text, "qfre%4x", cdev->private->schid.sch_no);
+        QDIO_DBF_TEXT0(0, setup, dbf_text);
+
         irq_ptr = cdev->private->qdio_data;
         if (!irq_ptr)
                 return -ENODEV;
 
         mutex_lock(&irq_ptr->setup_mutex);
-
-        sprintf(dbf_text, "qfqs%4x", irq_ptr->schid.sch_no);
-        QDIO_DBF_TEXT1(0, trace, dbf_text);
-        QDIO_DBF_TEXT0(0, setup, dbf_text);
-
         cdev->private->qdio_data = NULL;
         mutex_unlock(&irq_ptr->setup_mutex);
 
@@ -1295,7 +1297,6 @@ int qdio_initialize(struct qdio_initialize *init_data)
 
         sprintf(dbf_text, "qini%4x", init_data->cdev->private->schid.sch_no);
         QDIO_DBF_TEXT0(0, setup, dbf_text);
-        QDIO_DBF_TEXT0(0, trace, dbf_text);
 
         rc = qdio_allocate(init_data);
         if (rc)
@@ -1319,7 +1320,6 @@ int qdio_allocate(struct qdio_initialize *init_data)
 
         sprintf(dbf_text, "qalc%4x", init_data->cdev->private->schid.sch_no);
         QDIO_DBF_TEXT0(0, setup, dbf_text);
-        QDIO_DBF_TEXT0(0, trace, dbf_text);
 
         if ((init_data->no_input_qs && !init_data->input_handler) ||
             (init_data->no_output_qs && !init_data->output_handler))
@@ -1389,6 +1389,9 @@ int qdio_establish(struct qdio_initialize *init_data)
         unsigned long saveflags;
         int rc;
 
+        sprintf(dbf_text, "qest%4x", cdev->private->schid.sch_no);
+        QDIO_DBF_TEXT0(0, setup, dbf_text);
+
         irq_ptr = cdev->private->qdio_data;
         if (!irq_ptr)
                 return -ENODEV;
@@ -1399,10 +1402,6 @@ int qdio_establish(struct qdio_initialize *init_data)
         if (!try_module_get(THIS_MODULE))
                 return -EINVAL;
 
-        sprintf(dbf_text, "qest%4x", cdev->private->schid.sch_no);
-        QDIO_DBF_TEXT0(0, setup, dbf_text);
-        QDIO_DBF_TEXT0(0, trace, dbf_text);
-
         mutex_lock(&irq_ptr->setup_mutex);
         qdio_setup_irq(init_data);
 
@@ -1472,6 +1471,9 @@ int qdio_activate(struct ccw_device *cdev)
         unsigned long saveflags;
         char dbf_text[20];
 
+        sprintf(dbf_text, "qact%4x", cdev->private->schid.sch_no);
+        QDIO_DBF_TEXT0(0, setup, dbf_text);
+
         irq_ptr = cdev->private->qdio_data;
         if (!irq_ptr)
                 return -ENODEV;
@@ -1485,10 +1487,6 @@ int qdio_activate(struct ccw_device *cdev)
                 goto out;
         }
 
-        sprintf(dbf_text, "qact%4x", irq_ptr->schid.sch_no);
-        QDIO_DBF_TEXT2(0, setup, dbf_text);
-        QDIO_DBF_TEXT2(0, trace, dbf_text);
-
         irq_ptr->ccw.cmd_code = irq_ptr->aqueue.cmd;
         irq_ptr->ccw.flags = CCW_FLAG_SLI;
         irq_ptr->ccw.count = irq_ptr->aqueue.count;
@@ -1663,7 +1661,7 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
 #ifdef CONFIG_QDIO_DEBUG
         char dbf_text[20];
 
-        sprintf(dbf_text, "doQD%04x", cdev->private->schid.sch_no);
+        sprintf(dbf_text, "doQD%4x", cdev->private->schid.sch_no);
         QDIO_DBF_TEXT3(0, trace, dbf_text);
 #endif /* CONFIG_QDIO_DEBUG */
 
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 1bd2a208db28..1679e2f91c94 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -165,7 +165,7 @@ static void setup_queues(struct qdio_irq *irq_ptr,
         void **output_sbal_array = qdio_init->output_sbal_addr_array;
         int i;
 
-        sprintf(dbf_text, "qfqs%4x", qdio_init->cdev->private->schid.sch_no);
+        sprintf(dbf_text, "qset%4x", qdio_init->cdev->private->schid.sch_no);
         QDIO_DBF_TEXT0(0, setup, dbf_text);
 
         for_each_input_queue(irq_ptr, q, i) {
@@ -285,7 +285,7 @@ void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
         rc = __get_ssqd_info(irq_ptr);
         if (rc) {
                 QDIO_DBF_TEXT2(0, setup, "ssqdasig");
-                sprintf(dbf_text, "schno%x", irq_ptr->schid.sch_no);
+                sprintf(dbf_text, "schn%4x", irq_ptr->schid.sch_no);
                 QDIO_DBF_TEXT2(0, setup, dbf_text);
                 sprintf(dbf_text, "rc:%d", rc);
                 QDIO_DBF_TEXT2(0, setup, dbf_text);
@@ -447,7 +447,7 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
 {
         char s[80];
 
-        sprintf(s, "%s ", cdev->dev.bus_id);
+        sprintf(s, "%s sc:%x ", cdev->dev.bus_id, irq_ptr->schid.sch_no);
 
         switch (irq_ptr->qib.qfmt) {
         case QDIO_QETH_QFMT: