On Wed, Mar 11, 2015 at 09:18:19PM +, Chris Wilson wrote:
> On Wed, Mar 11, 2015 at 03:29:19PM +, Chris Wilson wrote:
> > + while (!need_resched()) {
> > + if (i915_gem_request_completed(req, true)) {
> > + ret = 0;
> > + goto out;
> > +
On Wed, Mar 11, 2015 at 09:18:19PM +, Chris Wilson wrote:
> Arguably busy-spinning on an idle system isn't totally evil, but it
> certainly is likely to come at a power cost. On the other hand, spinning
> is relatively rare outside of benchmarks. Rare enough to be useful?
As a counterpoint, I
Tested-By: PRC QA PRTS (Patch Regression Test System Contact:
shuang...@intel.com)
Task id: 5934
-Summary-
Platform Delta drm-intel-nightly Series Applied
PNV -9 281/281
On Wed, Mar 11, 2015 at 03:29:19PM +, Chris Wilson wrote:
> + while (!need_resched()) {
> + if (i915_gem_request_completed(req, true)) {
> + ret = 0;
> + goto out;
> + }
> +
> + if (timeout && time_after_eq(jiffies,
This provides a nice boost to mesa in swap bound scenarios (as mesa
throttles itself to the previous frame and given the scenario that will
complete shortly). It will also provide a good boost to systems running
with semaphores disabled and so frequently waiting on the GPU as it
switches rings. In
