diff options
| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2011-05-12 22:17:09 +0100 |
|---|---|---|
| committer |   Keith Packard <keithp@keithp.com> | 2011-07-13 11:28:07 -0700 |
| commit | 95736720fc866eadb2ce1789631b907c0f38cb7c (patch) | |
| tree | 5071fe60b3cdd5951e351e1565121287aa17675a /tools/perf/scripts/python/sched-migration.py | |
| parent | i915: Fix opregion notifications (diff) | |
| download | linux-dev-95736720fc866eadb2ce1789631b907c0f38cb7c.tar.xz linux-dev-95736720fc866eadb2ce1789631b907c0f38cb7c.zip | |
drm/i915: Cache GT fifo count for SandyBridge
The read back of the available FIFO entries is vital for system
stability, but extremely costly. However, we only need a guide so as to
avoid eating into the reserved entries and since we are the only
consumer we can cache the read of the count from the last write.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions