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The boost frequency is only applied from the RPS worker while someone is waiting on a request and requested a boost. As such, when the user wishes to change the frequency, we have to kick the worker in order to re-evaluate whether to apply the boost frequency. v2: Check num_waiters to decide if we should kick the worker to handle boosting. Fixes:29ecd78d3b("drm/i915: Define a separate variable and control for RPS waitboost frequency") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180308142648.4016-1-chris@chris-wilson.co.uk (cherry picked from commit59cd31f177) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.