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authorJason Wessel <jason.wessel@windriver.com>2010-10-25 10:14:05 -0500
committerJason Wessel <jason.wessel@windriver.com>2010-10-29 13:14:39 -0500
commit4aad8f51d0672f1c95e2cf0e1bc7b9ab42d8e1ea (patch)
tree51dc43c1b455cb6e166642051f64c80c7dd1d0b5 /Documentation
parent12ba8d1e9262ce81a695795410bd9ee5c9407ba1 (diff)
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kdb: Add kdb kernel module sample
Add an example of how to add a dynamic kdb shell command via a kernel module. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/DocBook/kgdb.tmpl13
1 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl
index 490d862c5f0..d71b57fcf11 100644
--- a/Documentation/DocBook/kgdb.tmpl
+++ b/Documentation/DocBook/kgdb.tmpl
@@ -710,7 +710,18 @@ Task Addr Pid Parent [*] cpu State Thread Command
<listitem><para>A simple shell</para></listitem>
<listitem><para>The kdb core command set</para></listitem>
<listitem><para>A registration API to register additional kdb shell commands.</para>
- <para>A good example of a self-contained kdb module is the "ftdump" command for dumping the ftrace buffer. See: kernel/trace/trace_kdb.c</para></listitem>
+ <itemizedlist>
+ <listitem><para>A good example of a self-contained kdb module
+ is the "ftdump" command for dumping the ftrace buffer. See:
+ kernel/trace/trace_kdb.c</para></listitem>
+ <listitem><para>For an example of how to dynamically register
+ a new kdb command you can build the kdb_hello.ko kernel module
+ from samples/kdb/kdb_hello.c. To build this example you can
+ set CONFIG_SAMPLES=y and CONFIG_SAMPLE_KDB=m in your kernel
+ config. Later run "modprobe kdb_hello" and the next time you
+ enter the kdb shell, you can run the "hello"
+ command.</para></listitem>
+ </itemizedlist></listitem>
<listitem><para>The implementation for kdb_printf() which
emits messages directly to I/O drivers, bypassing the kernel
log.</para></listitem>