Messages in this thread Patch in this message | | | From | Andrew Halaney <> | Subject | [PATCH v2 3/3] Documentation: dyndbg: Improve cli param examples | Date | Mon, 13 Sep 2021 17:24:40 -0500 |
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Jim pointed out that using $module.dyndbg= is always a more flexible choice for using dynamic debug on the command line. The $module.dyndbg style is checked at boot and handles if $module is a builtin. If it is actually a loadable module, it is handled again later when the module is loaded.
If you just use dyndbg="module $module +p" dynamic debug is only enabled when $module is a builtin.
It was recommended to illustrate wildcard usage as well.
Signed-off-by: Andrew Halaney <ahalaney@redhat.com> Suggested-by: Jim Cromie <jim.cromie@gmail.com> --- Documentation/admin-guide/dynamic-debug-howto.rst | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/dynamic-debug-howto.rst b/Documentation/admin-guide/dynamic-debug-howto.rst index d0911e7cc271..4bfb23ed64ec 100644 --- a/Documentation/admin-guide/dynamic-debug-howto.rst +++ b/Documentation/admin-guide/dynamic-debug-howto.rst @@ -357,7 +357,10 @@ Examples Kernel command line: ... // see whats going on in dyndbg=value processing dynamic_debug.verbose=1 - // enable pr_debugs in 2 builtins, #cmt is stripped - dyndbg="module params +p #cmt ; module sys +p" + // Enable pr_debugs in the params builtin + params.dyndbg="+p" + // enable pr_debugs in all files under init/ + // and the function pc87360_init_device, #cmt is stripped + dyndbg="file init/* +p #cmt ; func pc87360_init_device +p" // enable pr_debugs in 2 functions in a module loaded later pc87360.dyndbg="func pc87360_init_device +p; func pc87360_find +p" -- 2.31.1
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