tree 71b34650fbd4dd16d690a9a23eb2702ae0d31fa2
parent 03ade51185596a1d1028531c78fda557f244d676
author Chris Wilson <chris@chris-wilson.co.uk> 1430138480 +0100
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1432213903 +0200

drm/i915: Limit ring synchronisation (sw sempahores) RPS boosts

Ring switches can occur many times per frame, and are often out of
control, causing frequent RPS boosting for no practical benefit. Treat
the sw semaphore synchronisation as a separate client and only allow it
to boost once per busy/idle cycle.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: s/rq/req/]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>