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If we decide to timeslice out the current virtual request, we will unsubmit it while it is still busy (ve->context.inflight == sibling[0]). If the virtual tasklet and then the other sibling tasklets run before we completely schedule out the active virtual request for the preemption, those other tasklets will see that the virtul request is still inflight on sibling[0] and leave it be. Therefore when we finally schedule-out the virtual request and if we see that we have passed it back to the virtual engine, reschedule the virtual tasklet so that it may be resubmitted on any of the siblings. 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/20200519132046.22443-2-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.