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[v4,kunit-next,3/3] kunit: update documentation to describe debugfs representation

Message ID 1581949660-20113-4-git-send-email-alan.maguire@oracle.com (mailing list archive)
State New
Headers show
Series kunit: add debugfs representation to show results | expand

Commit Message

Alan Maguire Feb. 17, 2020, 2:27 p.m. UTC
Documentation should describe debugfs layout and semantics.

Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
 Documentation/dev-tools/kunit/usage.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst
index 7cd56a1..816fff4 100644
--- a/Documentation/dev-tools/kunit/usage.rst
+++ b/Documentation/dev-tools/kunit/usage.rst
@@ -590,3 +590,16 @@  able to run one test case per invocation.
 .. TODO(brendanhiggins@google.com): Add an actual example of an architecture
    dependent KUnit test.
+KUnit debugfs representation
+When kunit test suites are initialized, they create an associated directory
+in /sys/kernel/debug/kunit/<test-suite>.  The directory contains one file
+- results: "cat results" displays results of each test case and the results
+  of the entire suite for the last test run.
+The debugfs representation is primarily of use when kunit test suites are
+run in a native environment, either as modules or builtin.  Having a way
+to display results like this is valuable as otherwise results can be
+intermixed with other events in dmesg output.