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Diffstat (limited to 'Documentation/DocBook/kgdb.tmpl')
| -rw-r--r-- | Documentation/DocBook/kgdb.tmpl | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl index 97618bed4d6..e8acd1f0345 100644 --- a/Documentation/DocBook/kgdb.tmpl +++ b/Documentation/DocBook/kgdb.tmpl @@ -72,7 +72,7 @@ kgdb is a source level debugger for linux kernel. It is used along with gdb to debug a linux kernel. The expectation is that gdb can be used to "break in" to the kernel to inspect memory, variables - and look through a cal stack information similar to what an + and look through call stack information similar to what an application developer would use gdb for. It is possible to place breakpoints in kernel code and perform some limited execution stepping. @@ -84,17 +84,18 @@ runs an instance of gdb against the vmlinux file which contains the symbols (not boot image such as bzImage, zImage, uImage...). In gdb the developer specifies the connection parameters and - connects to kgdb. Depending on which kgdb I/O modules exist in - the kernel for a given architecture, it may be possible to debug - the test machine's kernel with the development machine using a - rs232 or ethernet connection. + connects to kgdb. The type of connection a developer makes with + gdb depends on the availability of kgdb I/O modules compiled as + builtin's or kernel modules in the test machine's kernel. </para> </chapter> <chapter id="CompilingAKernel"> <title>Compiling a kernel</title> <para> - To enable <symbol>CONFIG_KGDB</symbol>, look under the "Kernel debugging" - and then select "KGDB: kernel debugging with remote gdb". + To enable <symbol>CONFIG_KGDB</symbol> you should first turn on + "Prompt for development and/or incomplete code/drivers" + (CONFIG_EXPERIMENTAL) in "General setup", then under the + "Kernel debugging" select "KGDB: kernel debugging with remote gdb". </para> <para> Next you should choose one of more I/O drivers to interconnect debugging @@ -221,7 +222,7 @@ </para> <para> IMPORTANT NOTE: Using this option with kgdb over the console - (kgdboc) or kgdb over ethernet (kgdboe) is not supported. + (kgdboc) is not supported. </para> </sect1> </chapter> @@ -247,18 +248,11 @@ (gdb) target remote /dev/ttyS0 </programlisting> <para> - Example (kgdb to a terminal server): + Example (kgdb to a terminal server on tcp port 2012): </para> <programlisting> % gdb ./vmlinux - (gdb) target remote udp:192.168.2.2:6443 - </programlisting> - <para> - Example (kgdb over ethernet): - </para> - <programlisting> - % gdb ./vmlinux - (gdb) target remote udp:192.168.2.2:6443 + (gdb) target remote 192.168.2.2:2012 </programlisting> <para> Once connected, you can debug a kernel the way you would debug an |