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Vincent Guittot 68df021d3c arm64/amu: Use capacity_ref_freq() to set AMU ratio commit `1f023007f5` upstream. Use the new capacity_ref_freq() method to set the ratio that is used by AMU for computing the arch_scale_freq_capacity(). This helps to keep everything aligned using the same reference for computing CPUs capacity. The default value of the ratio (stored in per_cpu(arch_max_freq_scale)) ensures that arch_scale_freq_capacity() returns max capacity until it is set to its correct value with the cpu capacity and capacity_ref_freq(). Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20231211104855.558096-8-vincent.guittot@linaro.org Stable-dep-of: `e37617c8e5` ("sched/fair: Fix frequency selection for non-invariant case") Signed-off-by: Wentao Guan <guanwentao@uniontech.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-08-28 16:28:42 +02:00
arch	arm64/amu: Use capacity_ref_freq() to set AMU ratio	2025-08-28 16:28:42 +02:00
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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.