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It is not necessary to call intel_pstate_get_hwp_cap() from intel_pstate_update_perf_limits(), because it gets called from intel_pstate_verify_cpu_policy() which is either invoked directly right before intel_pstate_update_perf_limits(), in intel_cpufreq_verify_policy() in the passive mode, or called from driver callbacks in a sequence that causes it to be followed by an immediate intel_pstate_update_perf_limits(). Namely, in the active mode intel_cpufreq_verify_policy() is called by intel_pstate_verify_policy() which is the ->verify() callback routine of intel_pstate and gets called by the cpufreq core right before intel_pstate_set_policy(), which is the driver's ->setoplicy() callback routine, where intel_pstate_update_perf_limits() is called. 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 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.