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513a4c5589
Haswell+ require many power wells to probe the current HW display state. Under the wakeref tracking scheme, we want each owner to store and release the wakeref they use, so we can identify callers that have leaked their wakeref. For hsw_get_pipe_config, this means we have to keep the array of all wakerefs as it current acquires its power wells piecemeal and releases them en masse. By tracking these wakerefs, we should be able to eliminate a lot of noise from the runtime-pm debug logs. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190406080341.2654-1-chris@chris-wilson.co.uk
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.