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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-12 14:42:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-12 14:42:48 -0800
commit823e334ecd247dd49ca2c5c90414435d77135340 (patch)
tree3e015dacfcf51fc0d0dba5541084363843e64358 /tools/testing
parent6ce4436c9cbe903af935291aa219fd6f4c85722d (diff)
parent9b64c09bb960b4ccae2a42e204cd70f83b115e3d (diff)
downloadlinux-823e334ecd247dd49ca2c5c90414435d77135340.tar.bz2
Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6
Pull documentation update from Jonathan Corbet: "Here's my set of accumulated documentation changes for 3.19. It includes a couple of additions to the coding style document, some fixes for minor build problems within the documentation tree, the relocation of the kselftest docs, and various tweaks and additions. A couple of changes reach outside of Documentation/; they only make trivial comment changes and I did my best to get the required acks. Complete with a shiny signed tag this time around" * tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: kobject: grammar fix Input: xpad - update docs to reflect current state Documentation: Build mic/mpssd only for x86_64 cgroups: Documentation: fix wrong cgroupfs paths Documentation/email-clients.txt: add info about Claws Mail CodingStyle: add some more error handling guidelines kselftest: Move the docs to the Documentation dir Documentation: fix formatting to make 's' happy Documentation: power: Fix typo in Documentation/power Documentation: vm: Add 1GB large page support information ipv4: add kernel parameter tcpmhash_entries Documentation: Fix a typo in mailbox.txt treewide: Fix typo in Documentation/DocBook/device-drivers CodingStyle: Add a chapter on conditional compilation
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-Linux Kernel Selftests
-
-The kernel contains a set of "self tests" under the tools/testing/selftests/
-directory. These are intended to be small unit tests to exercise individual
-code paths in the 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
-
-- note that some tests will require root privileges.
-
-To run only tests targeted for a single subsystem: (including
-hotplug targets in limited mode)
-
- $ make -C tools/testing/selftests TARGETS=cpu-hotplug run_tests
-
-See the top-level tools/testing/selftests/Makefile for the list of all possible
-targets.
-
-Running the full range hotplug selftests
-========================================
-
-To build the tests:
-
- $ make -C tools/testing/selftests hotplug
-
-To run the tests:
-
- $ make -C tools/testing/selftests run_hotplug
-
-- note that some tests will require root privileges.
-
-Contributing new tests
-======================
-
-In general, the rules for 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.