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743354e3bb
scx_ops_allow_queued_wakeup is used to encode SCX_OPS_ALLOW_QUEUED_WAKEUP into a static_key. The test is gated behind scx_enabled(), and, even when sched_ext is enabled, is unlikely for the static_key usage to make any meaningful difference. It is made to use a static_key mostly because there was no reason not to. However, global static_keys can't work with the planned hierarchical multiple scheduler support. Remove the static_key and instead test SCX_OPS_ALLOW_QUEUED_WAKEUP directly. In repeated hackbench runs before and after static_keys removal on an AMD Ryzen 3900X, I couldn't tell any measurable performance difference. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Changwoo Min <changwoo@igalia.com> Acked-by: Andrea Righi <arighi@nvidia.com>
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.