[S390] qdio: rework debug feature logging

- make qdio_trace a per device view
- remove s390dbf exceptions
- remove CONFIG_QDIO_DEBUG, not needed anymore if we check for the level
  before calling sprintf
- use snprintf for dbf entries
- add start markers to see if the dbf view wrapped
- add a global error view for all queues

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

1 files changed, 0 insertions, 10 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 7899f0bce658..90ba5d35cf32 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -347,16 +347,6 @@ config QDIO
 
           If unsure, say Y.
 
-config QDIO_DEBUG
-        bool "Extended debugging information"
-        depends on QDIO
-        help
-          Say Y here to get extended debugging output in
-            /sys/kernel/debug/s390dbf/qdio...
-          Warning: this option reduces the performance of the QDIO module.
-
-          If unsure, say N.
-
 config CHSC_SCH
         tristate "Support for CHSC subchannels"
         help