drm/i915: Remove second level open-coded rcu work
authorChris Wilson <chris@chris-wilson.co.uk>
Thu, 28 Feb 2019 10:20:35 +0000 (10:20 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Thu, 28 Feb 2019 11:08:09 +0000 (11:08 +0000)
commitd9948a10b90201d1aa91e5a96daa09f40f7bb282
tree50e63e66ae77dddf81323df1af7276da3115819d
parent13f1bfd3b3329b19950f95964580a84795ce7be9
drm/i915: Remove second level open-coded rcu work

We currently use a worker queued from an rcu callback to determine when
a how grace period has elapsed while we remained idle. We use this idle
delay to infer that we will be idle for a while and this is a suitable
point at which we can trim our global memory caches.

Since we wrote that, this mechanism now exists as rcu_work, and having
converted the idle shrinkers over to using that, we can remove our own
variant.

v2: Say goodbye to gt.epoch as well.
v3: Remove the misplaced and redundant comment before parking globals

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190228102035.5857-3-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/i915_debugfs.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem.c