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-rw-r--r--Documentation/dev-tools/gcov.rst11
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diff --git a/Documentation/dev-tools/gcov.rst b/Documentation/dev-tools/gcov.rst
index 5fce2b06f229..dbd26b02ff3c 100644
--- a/Documentation/dev-tools/gcov.rst
+++ b/Documentation/dev-tools/gcov.rst
@@ -75,6 +75,17 @@ Only files which are linked to the main kernel image or are compiled as
kernel modules are supported by this mechanism.
+Module specific configs
+-----------------------
+
+Gcov kernel configs for specific modules are described below:
+
+CONFIG_GCOV_PROFILE_RDS:
+ Enables GCOV profiling on RDS for checking which functions or
+ lines are executed. This config is used by the rds selftest to
+ generate coverage reports. If left unset the report is omitted.
+
+
Files
-----