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-rw-r--r--tools/testing/ktest/sample.conf12
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index a83846d829b..d096a0c8040 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -837,6 +837,18 @@
# TODO: add a test version that makes the config do more than just
# boot, like having network access.
#
+# To save time, the test does not just grab any option and test
+# it. The Kconfig files are examined to determine the dependencies
+# of the configs. If a config is chosen that depends on another
+# config, that config will be checked first. By checking the
+# parents first, we can eliminate whole groups of configs that
+# may have been enabled.
+#
+# For example, if a USB device config is chosen and depends on CONFIG_USB,
+# the CONFIG_USB will be tested before the device. If CONFIG_USB is
+# found not to be needed, it, as well as all configs that depend on
+# it, will be disabled and removed from the current min_config.
+#
# OUTPUT_MIN_CONFIG is the path and filename of the file that will
# be created from the MIN_CONFIG. If you interrupt the test, set
# this file as your new min config, and use it to continue the test.