diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-11-14 20:41:01 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-11-14 21:00:26 +0000 |
| commit | 0de9136dbbc9f6882bb375270eaddf1b999081bf (patch) | |
| tree | 499c909d8225159858f7057cdc6fa3c50b1b3ddc /drivers/gpu/drm/i915/i915_gem_request.c | |
| parent | 663f71e73ffd16327745f752269f5059bf196464 (diff) | |
drm/i915/scheduler: Signal the arrival of a new request
The start of the scheduler, add a hook into request submission for the
scheduler to see the arrival of new requests and prepare its runqueues.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161114204105.29171-6-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_request.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_request.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 952d2aec5244..1118cf48d6f0 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -762,6 +762,19 @@ void __i915_add_request(struct drm_i915_gem_request *request, bool flush_caches) i915_gem_mark_busy(engine); + /* Let the backend know a new request has arrived that may need + * to adjust the existing execution schedule due to a high priority + * request - i.e. we may want to preempt the current request in order + * to run a high priority dependency chain *before* we can execute this + * request. + * + * This is called before the request is ready to run so that we can + * decide whether to preempt the entire chain so that it is ready to + * run at the earliest possible convenience. + */ + if (engine->schedule) + engine->schedule(request, 0); + local_bh_disable(); i915_sw_fence_commit(&request->submit); local_bh_enable(); /* Kick the execlists tasklet if just scheduled */ |