mirror of https://gitee.com/openkylin/linux.git
44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
====================
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Livepatch Self Tests
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====================
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This is a small set of sanity tests for the kernel livepatching.
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The test suite loads and unloads several test kernel modules to verify
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livepatch behavior. Debug information is logged to the kernel's message
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buffer and parsed for expected messages. (Note: the tests will clear
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the message buffer between individual tests.)
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Config
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------
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Set these config options and their prerequisites:
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CONFIG_LIVEPATCH=y
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CONFIG_TEST_LIVEPATCH=m
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Running the tests
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-----------------
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Test kernel modules are built as part of lib/ (make modules) and need to
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be installed (make modules_install) as the test scripts will modprobe
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them.
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To run the livepatch selftests, from the top of the kernel source tree:
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% make -C tools/testing/selftests TARGETS=livepatch run_tests
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Adding tests
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------------
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See the common functions.sh file for the existing collection of utility
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functions, most importantly set_dynamic_debug() and check_result(). The
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latter function greps the kernel's ring buffer for "livepatch:" and
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"test_klp" strings, so tests be sure to include one of those strings for
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result comparison. Other utility functions include general module
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loading and livepatch loading helpers (waiting for patch transitions,
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sysfs entries, etc.)
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