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When (sustained_freq_khz * 1000) is less than sustained_perf_level, the multiplier will be less than 1 and hence rounded down as 0. Similarly if it is not multiple of sustained_perf_level the dom_info->mult_factor will contain rounded down value and will end up impacting all the frequency calculations done using it. Add warning if and when the domain frequency multiplier is 0 or rounded down so that it gives a clue to get the firmware tables fixed. Suggested-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com> Link: https://lore.kernel.org/r/20240119152338.3047620-1-sudeep.holla@arm.com Signed-off-by: Sudeep Holla <sudeep.holla@arm.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.