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The original intent for the delay before running the idle_work was to provide a hysteresis to avoid ping-ponging the device runtime-pm. Since then we have also pulled in some memory management and general device management for parking. But with the inversion of the wakeref handling, GEM is no longer responsible for the wakeref and by the time we call the idle_work, the device is asleep. It seems appropriate now to drop the delay and just run the worker immediately to flush the cached GEM state before sleeping. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190507121108.18377-2-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.