diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 43f61aa24ed7..642b54692d0d 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -496,6 +496,18 @@ static inline u32 intel_engine_get_seqno(struct intel_engine_cs *engine) return intel_read_status_page(engine, I915_GEM_HWS_INDEX); } +static inline u32 intel_engine_last_submit(struct intel_engine_cs *engine) +{ + /* We are only peeking at the tail of the submit queue (and not the + * queue itself) in order to gain a hint as to the current active + * state of the engine. Callers are not expected to be taking + * engine->timeline->lock, nor are they expected to be concerned + * wtih serialising this hint with anything, so document it as + * a hint and nothing more. + */ + return READ_ONCE(engine->timeline->last_submitted_seqno); +} + int init_workarounds_ring(struct intel_engine_cs *engine); void intel_engine_get_instdone(struct intel_engine_cs *engine, |
