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David Vernet 8a6c6b4b93 sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed
The scx_bpf_cpuperf_set() kfunc allows a BPF program to set the relative
performance target of a specified CPU. Commit d86adb4fc0 ("sched_ext: Add
cpuperf support") defined the @cpu argument to be unsigned. Let's update it
to be signed to match the norm for the rest of ext.c and the kernel.

Note that the kfunc declaration of scx_bpf_cpuperf_set() in the
common.bpf.h header in tools/sched_ext already listed the cpu as signed, so
this also fixes the build for tools/sched_ext and the sched_ext selftests
due to kfunc declarations now being emitted in vmlinux.h based on BTF (thus
causing the compiler to error due to observing conflicting types).

Fixes: d86adb4fc0 ("sched_ext: Add cpuperf support")
Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
History 2024-06-23 07:53:15 -10:00
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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.