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Diffstat (limited to 'Documentation/admin-guide/dynamic-debug-howto.rst')
| -rw-r--r-- | Documentation/admin-guide/dynamic-debug-howto.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/admin-guide/dynamic-debug-howto.rst b/Documentation/admin-guide/dynamic-debug-howto.rst index a89cfa083155..d8954ab05c7b 100644 --- a/Documentation/admin-guide/dynamic-debug-howto.rst +++ b/Documentation/admin-guide/dynamic-debug-howto.rst @@ -35,6 +35,7 @@ Dynamic debug has even more useful features: - line number (including ranges of line numbers) - module name - format string + - class name (as known/declared by each module) * Provides a debugfs control file: ``<debugfs>/dynamic_debug/control`` which can be read to display the complete list of known debug @@ -142,6 +143,7 @@ against. Possible keywords are::: 'file' string | 'module' string | 'format' string | + 'class' string | 'line' line-range line-range ::= lineno | @@ -203,6 +205,15 @@ format format "nfsd: SETATTR" // a neater way to match a format with whitespace format 'nfsd: SETATTR' // yet another way to match a format with whitespace +class + The given class_name is validated against each module, which may + have declared a list of known class_names. If the class_name is + found for a module, callsite & class matching and adjustment + proceeds. Examples:: + + class DRM_UT_KMS # a DRM.debug category + class JUNK # silent non-match + line The given line number or range of line numbers is compared against the line number of each ``pr_debug()`` callsite. A single |