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Intel hybrid processors have CPUs of different capacity. Populate the interface /sys/devices/system/cpu/cpuN/cpu_capacity. This interface uses the per-CPU variable `cpu_scale`. On x86 this variable has no other use besides feeding the sysfs entries. Initialize it when setting CPU capacity for the scheduler and scale-invariant code. Feed it with arch_scale_cpu_capacity() as it gives capacity normalized to the interval [0, SCHED_CAPACITY_SCALE]. Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.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.