[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>
diff --git a/drivers/s390/cio/qdio_debug.h b/drivers/s390/cio/qdio_debug.h
index 8484b83..5a4d85b 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 */