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18b7a1479e
/proc/uid_time_in_state has no data on cuttlefish because its cpu
frequency tables are empty. Because time in state & concurrent time
accounting are intertwined this causes the
/proc/uid_concurrent_{policy,active}_time files to also not contain
any data.
Add a minimal, fake cpufreq driver that creates a freq table with 2
frequencies per policy, to allow testing time in state functionality.
Test: all 3 proc files show reasonable data on cuttlefish
Test: log shows no errors from bad /proc/uid_time_in_state format
Bug: 139763108
Bug: 140796321
Bug: 141206930
Change-Id: I8c7fe1007a80c21a9bcba9455bf837947cf42963
Signed-off-by: Connor O'Brien <connoro@google.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.