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authorDave Jones <davej@redhat.com>2006-12-12 17:41:41 -0500
committerDave Jones <davej@redhat.com>2006-12-12 17:41:41 -0500
commitc4366889dda8110247be59ca41fddb82951a8c26 (patch)
tree705c1a996bed8fd48ce94ff33ec9fd00f9b94875 /Documentation/s390/s390dbf.txt
parentdb2fb9db5735cc532fd4fc55e94b9a3c3750378e (diff)
parente1036502e5263851259d147771226161e5ccc85a (diff)
Merge ../linus
Conflicts: drivers/cpufreq/cpufreq.c
Diffstat (limited to 'Documentation/s390/s390dbf.txt')
-rw-r--r--Documentation/s390/s390dbf.txt8
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/s390/s390dbf.txt b/Documentation/s390/s390dbf.txt
index 000230cd26db..0eb7c58916de 100644
--- a/Documentation/s390/s390dbf.txt
+++ b/Documentation/s390/s390dbf.txt
@@ -36,7 +36,7 @@ switches to the next debug area. This is done in order to be sure
36that the records which describe the origin of the exception are not 36that the records which describe the origin of the exception are not
37overwritten when a wrap around for the current area occurs. 37overwritten when a wrap around for the current area occurs.
38 38
39The debug areas itselve are also ordered in form of a ring buffer. 39The debug areas themselves are also ordered in form of a ring buffer.
40When an exception is thrown in the last debug area, the following debug 40When an exception is thrown in the last debug area, the following debug
41entries are then written again in the very first area. 41entries are then written again in the very first area.
42 42
@@ -55,7 +55,7 @@ The debug logs can be inspected in a live system through entries in
55the debugfs-filesystem. Under the toplevel directory "s390dbf" there is 55the debugfs-filesystem. Under the toplevel directory "s390dbf" there is
56a directory for each registered component, which is named like the 56a directory for each registered component, which is named like the
57corresponding component. The debugfs normally should be mounted to 57corresponding component. The debugfs normally should be mounted to
58/sys/kernel/debug therefore the debug feature can be accessed unter 58/sys/kernel/debug therefore the debug feature can be accessed under
59/sys/kernel/debug/s390dbf. 59/sys/kernel/debug/s390dbf.
60 60
61The content of the directories are files which represent different views 61The content of the directories are files which represent different views
@@ -87,11 +87,11 @@ There are currently 2 possible triggers, which stop the debug feature
87globally. The first possibility is to use the "debug_active" sysctl. If 87globally. The first possibility is to use the "debug_active" sysctl. If
88set to 1 the debug feature is running. If "debug_active" is set to 0 the 88set to 1 the debug feature is running. If "debug_active" is set to 0 the
89debug feature is turned off. 89debug feature is turned off.
90The second trigger which stops the debug feature is an kernel oops. 90The second trigger which stops the debug feature is a kernel oops.
91That prevents the debug feature from overwriting debug information that 91That prevents the debug feature from overwriting debug information that
92happened before the oops. After an oops you can reactivate the debug feature 92happened before the oops. After an oops you can reactivate the debug feature
93by piping 1 to /proc/sys/s390dbf/debug_active. Nevertheless, its not 93by piping 1 to /proc/sys/s390dbf/debug_active. Nevertheless, its not
94suggested to use an oopsed kernel in an production environment. 94suggested to use an oopsed kernel in a production environment.
95If you want to disallow the deactivation of the debug feature, you can use 95If you want to disallow the deactivation of the debug feature, you can use
96the "debug_stoppable" sysctl. If you set "debug_stoppable" to 0 the debug 96the "debug_stoppable" sysctl. If you set "debug_stoppable" to 0 the debug
97feature cannot be stopped. If the debug feature is already stopped, it 97feature cannot be stopped. If the debug feature is already stopped, it