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55e8c1b49a
KUnit tests run in a kthread, with the current->kunit_test pointer set to the test's context. This allows the kunit_get_current_test() and kunit_fail_current_test() macros to work. Normally, this pointer is still valid during test shutdown (i.e., the suite->exit function, and any resource cleanup). However, if the test has exited early (e.g., due to a failed assertion), the cleanup is done in the parent KUnit thread, which does not have an active context. Instead, in the event test terminates early, run the test exit and cleanup from a new 'cleanup' kthread, which sets current->kunit_test, and better isolates the rest of KUnit from issues which arise in test cleanup. If a test cleanup function itself aborts (e.g., due to an assertion failing), there will be no further attempts to clean up: an error will be logged and the test failed. For example: # example_simple_test: test aborted during cleanup. continuing without cleaning up This should also make it easier to get access to the KUnit context, particularly from within resource cleanup functions, which may, for example, need access to data in test->priv. Reviewed-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.