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e16a8d209c
Several tests in the suite use large amounts of traffic to e.g. cause congestion and evaluate RED or shaper performance. These tests will not run well on a slow machine, be it one with heavy debug kernel, or a VM, or e.g. a single-board computer. Allow users to specify an environment variable, KSFT_MACHINE_SLOW=yes, to indicate that the tests are being run on one such machine. Performance sensitive tests can then use a new helper, xfail_on_slow(), to mark parts of the test that are sensitive to low-performance machines. The helper can be used to just mark the whole suite, like so: xfail_on_slow tests_run ... or, on the other side of the granularity spectrum, to override individual checks: xfail_on_slow check_err $? "Expected much, got little." Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://lore.kernel.org/r/99a376a2d2ffdaeee7752b1910cb0c3ea5d80fbe.1711464583.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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 reStructuredText 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.