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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - 5.3.11 regression: No RC6 on Kaby Lake"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112315#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 5.3.11 regression: No RC6 on Kaby Lake"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112315">bug 112315</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to Tomas Janousek from <a href="show_bug.cgi?id=112315#c4">comment #4</a>)
<span class="quote">> Not sure I feel daring enough to try those patches. Am I supposed to be able
> to apply that to 5.3.11 or perhaps compile drm-tip + that as a module for
> 5.3?</span >
It's based on our 5.5-tree at present, so, you would have to compile the whole
kernel (just use your distro /boot/config-`uname -r`), and it only attempts to
enter rc6 faster after activity:
<a href="https://cgit.freedesktop.org/~ickle/linux-2.6/log/?h=bug112315">https://cgit.freedesktop.org/~ickle/linux-2.6/log/?h=bug112315</a>
There is still a dependency on the background worker to pick up the pieces if
userspace is completely idle, so we need to think of ways of running that more
often, cheaply -- kicking it off after a completion event? Maybe tie it into
only if rc6 is disabled.
Hmm, I wonder if we can use something like task_work so that we clean up after
userspace on a process switch.</pre>
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