[PATCH v3 9/9] KVM: selftests: Provide README.rst for KVM selftests runner

[Vipin Sharma]

Add README.rst for KVM selftest runner and explain how to use the
runner.

Signed-off-by: Vipin Sharma <vipinsh at google.com>
---
 tools/testing/selftests/kvm/.gitignore        |  1 +
 tools/testing/selftests/kvm/runner/README.rst | 54 +++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 tools/testing/selftests/kvm/runner/README.rst

diff --git a/tools/testing/selftests/kvm/.gitignore b/tools/testing/selftests/kvm/.gitignore
index 548d435bde2f..83aa2fe01bac 100644
--- a/tools/testing/selftests/kvm/.gitignore
+++ b/tools/testing/selftests/kvm/.gitignore
@@ -4,6 +4,7 @@
 !*.c
 !*.h
 !*.py
+!*.rst
 !*.S
 !*.sh
 !*.test
diff --git a/tools/testing/selftests/kvm/runner/README.rst b/tools/testing/selftests/kvm/runner/README.rst
new file mode 100644
index 000000000000..83b071c0a0e6
--- /dev/null
+++ b/tools/testing/selftests/kvm/runner/README.rst
@@ -0,0 +1,54 @@
+KVM Selftest Runner
+===================
+
+KVM selftest runner is highly configurable test executor that allows to run
+tests with different configurations (not just the default), parallely, save
+output to disk hierarchically, control what gets printed on console, provide
+execution status.
+
+To generate default tests use::
+
+  # make tests_install
+
+This will create ``testcases_default_gen`` directory which will have testcases
+in `default.test` files. Each KVM selftest will have a directory in  which
+`default.test` file will be created with executable path relative to KVM
+selftest root directory i.e. `/tools/testing/selftests/kvm`. For example, the
+`dirty_log_perf_test` will have::
+
+  # cat testcase_default_gen/dirty_log_perf_test/default.test
+  dirty_log_perf_test
+
+Runner will execute `dirty_log_perf_test`. Testcases files can also provide
+extra arguments to the test::
+
+  # cat tests/dirty_log_perf_test/2slot_5vcpu_10iter.test
+  dirty_log_perf_test -x 2 -v 5 -i 10
+
+In this case runner will execute the `dirty_log_perf_test` with the options.
+
+Example
+=======
+
+To see all of the options::
+
+  # python3 runner -h
+
+To run all of the default tests::
+
+  # python3 runner -d testcases_default_gen
+
+To run tests parallely::
+
+  # python3 runner -d testcases_default_gen -j 40
+
+To print only passed test status and failed test stderr::
+
+  # python3 runner -d testcases_default_gen --print-passed status \
+  --print-failed stderr
+
+To run tests binary which are in some other directory (out of tree builds)::
+
+  # python3 runner -d testcases_default_gen -p /path/to/binaries
+
+
-- 
2.51.0.618.g983fd99d29-goog