mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
9332ef9dbd
Fix typos and add the following to the scripts/spelling.txt: an user||a user an userspace||a userspace I also added "userspace" to the list since it is a common word in Linux. I found some instances for "an userfaultfd", but I did not add it to the list. I felt it is endless to find words that start with "user" such as "userland" etc., so must draw a line somewhere. Link: http://lkml.kernel.org/r/1481573103-11329-4-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
110 lines
3.2 KiB
Plaintext
110 lines
3.2 KiB
Plaintext
Linux Kernel Selftests
|
||
|
||
The kernel contains a set of "self tests" under the tools/testing/selftests/
|
||
directory. These are intended to be small tests to exercise individual code
|
||
paths in the kernel. Tests are intended to be run after building, installing
|
||
and booting a kernel.
|
||
|
||
On some systems, hot-plug tests could hang forever waiting for cpu and
|
||
memory to be ready to be offlined. A special hot-plug target is created
|
||
to run full range of hot-plug tests. In default mode, hot-plug tests run
|
||
in safe mode with a limited scope. In limited mode, cpu-hotplug test is
|
||
run on a single cpu as opposed to all hotplug capable cpus, and memory
|
||
hotplug test is run on 2% of hotplug capable memory instead of 10%.
|
||
|
||
Running the selftests (hotplug tests are run in limited mode)
|
||
=============================================================
|
||
|
||
To build the tests:
|
||
$ make -C tools/testing/selftests
|
||
|
||
|
||
To run the tests:
|
||
$ make -C tools/testing/selftests run_tests
|
||
|
||
To build and run the tests with a single command, use:
|
||
$ make kselftest
|
||
|
||
- note that some tests will require root privileges.
|
||
|
||
|
||
Running a subset of selftests
|
||
========================================
|
||
You can use the "TARGETS" variable on the make command line to specify
|
||
single test to run, or a list of tests to run.
|
||
|
||
To run only tests targeted for a single subsystem:
|
||
$ make -C tools/testing/selftests TARGETS=ptrace run_tests
|
||
|
||
You can specify multiple tests to build and run:
|
||
$ make TARGETS="size timers" kselftest
|
||
|
||
See the top-level tools/testing/selftests/Makefile for the list of all
|
||
possible targets.
|
||
|
||
|
||
Running the full range hotplug selftests
|
||
========================================
|
||
|
||
To build the hotplug tests:
|
||
$ make -C tools/testing/selftests hotplug
|
||
|
||
To run the hotplug tests:
|
||
$ make -C tools/testing/selftests run_hotplug
|
||
|
||
- note that some tests will require root privileges.
|
||
|
||
|
||
Install selftests
|
||
=================
|
||
|
||
You can use kselftest_install.sh tool installs selftests in default
|
||
location which is tools/testing/selftests/kselftest or a user specified
|
||
location.
|
||
|
||
To install selftests in default location:
|
||
$ cd tools/testing/selftests
|
||
$ ./kselftest_install.sh
|
||
|
||
To install selftests in a user specified location:
|
||
$ cd tools/testing/selftests
|
||
$ ./kselftest_install.sh install_dir
|
||
|
||
Running installed selftests
|
||
===========================
|
||
|
||
Kselftest install as well as the Kselftest tarball provide a script
|
||
named "run_kselftest.sh" to run the tests.
|
||
|
||
You can simply do the following to run the installed Kselftests. Please
|
||
note some tests will require root privileges.
|
||
|
||
cd kselftest
|
||
./run_kselftest.sh
|
||
|
||
Contributing new tests
|
||
======================
|
||
|
||
In general, the rules for selftests are
|
||
|
||
* Do as much as you can if you're not root;
|
||
|
||
* Don't take too long;
|
||
|
||
* Don't break the build on any architecture, and
|
||
|
||
* Don't cause the top-level "make run_tests" to fail if your feature is
|
||
unconfigured.
|
||
|
||
Contributing new tests(details)
|
||
===============================
|
||
|
||
* Use TEST_GEN_XXX if such binaries or files are generated during
|
||
compiling.
|
||
TEST_PROGS, TEST_GEN_PROGS mean it is the excutable tested by
|
||
default.
|
||
TEST_PROGS_EXTENDED, TEST_GEN_PROGS_EXTENDED mean it is the
|
||
executable which is not tested by default.
|
||
TEST_FILES, TEST_GEN_FILES mean it is the file which is used by
|
||
test.
|