path: root/Documentation/s390
diff options
authorHeiko Carstens <>2020-06-18 07:09:57 +0200
committerHeiko Carstens <>2020-06-29 16:32:20 +0200
commitecb1ff6833c461ea3bcf16396cd4f1eb50b119c2 (patch)
treeeb032ed1d2ef97959465b5ab5651507f67df14fd /Documentation/s390
parent7fa0d6ff35cfaae9cc7012d9220cd24400c650f1 (diff)
s390/debug: remove raw view
There is not a single user of the debug raw view. Therefore remove it before anybody uses it. If anybody would make use of the view it would expose the struct __debug_entry definition to userspace and really would make it uapi. This wouldn't be good, since the definition is suboptimal and needs to be changed. Right now the structure definition is only defined to be uapi, however there is no user. Signed-off-by: Heiko Carstens <>
Diffstat (limited to 'Documentation/s390')
1 files changed, 4 insertions, 13 deletions
diff --git a/Documentation/s390/s390dbf.rst b/Documentation/s390/s390dbf.rst
index cdb36842b898..af8bdc3629e7 100644
--- a/Documentation/s390/s390dbf.rst
+++ b/Documentation/s390/s390dbf.rst
@@ -67,7 +67,7 @@ corresponding component. The debugfs normally should be mounted to
The content of the directories are files which represent different views
to the debug log. Each component can decide which views should be
used through registering them with the function :c:func:`debug_register_view()`.
-Predefined views for hex/ascii, sprintf and raw binary data are provided.
+Predefined views for hex/ascii and sprintf data are provided.
It is also possible to define other views. The content of
a view can be inspected simply by reading the corresponding debugfs file.
@@ -119,8 +119,6 @@ Predefined views:
extern struct debug_view debug_hex_ascii_view;
- extern struct debug_view debug_raw_view;
extern struct debug_view debug_sprintf_view;
@@ -129,7 +127,7 @@ Examples
.. code-block:: c
- * hex_ascii- + raw-view Example
+ * hex_ascii-view Example
#include <linux/init.h>
@@ -143,7 +141,6 @@ Examples
debug_info = debug_register("test", 1, 4, 4 );
debug_register_view(debug_info, &debug_hex_ascii_view);
- debug_register_view(debug_info, &debug_raw_view);
debug_text_event(debug_info, 4 , "one ");
debug_int_exception(debug_info, 4, 4711);
@@ -201,7 +198,7 @@ debugfs-files:
> ls /sys/kernel/debug/s390dbf/dasd
- flush hex_ascii level pages raw
+ flush hex_ascii level pages
> cat /sys/kernel/debug/s390dbf/dasd/hex_ascii | sort -k2,2 -s
00 00974733272:680099 2 - 02 0006ad7e 07 ea 4a 90 | ....
00 00974733272:682210 2 - 02 0006ade6 46 52 45 45 | FREE
@@ -298,10 +295,9 @@ order to see the debug entries well formatted.
Predefined Views
-There are three predefined views: hex_ascii, raw and sprintf.
+There are two predefined views: hex_ascii and sprintf.
The hex_ascii view shows the data field in hex and ascii representation
(e.g. ``45 43 4b 44 | ECKD``).
-The raw view returns a bytestream as the debug areas are stored in memory.
The sprintf view formats the debug entries in the same way as the sprintf
function would do. The sprintf event/exception functions write to the
@@ -334,11 +330,6 @@ The format of the hex_ascii and sprintf view is as follows:
- Return Address to caller
- data field
-The format of the raw view is:
-- Header as described in debug.h
-- datafield
A typical line of the hex_ascii view will look like the following (first line
is only for explanation and will not be displayed when 'cating' the view)::