Re: [PATCH 18/47] drm/i915: Disable preempt busywait when using GuC scheduling

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 6/24/2021 00:04, Matthew Brost wrote:
Disable preempt busywait when using GuC scheduling. This isn't need as
needed

the GuC control preemption when scheduling.
controls

With the above fixed:
Reviewed-by: John Harrison <John.C.Harrison@xxxxxxxxx>



Cc: John Harrison <john.c.harrison@xxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
---
  drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index 87b06572fd2e..f7aae502ec3d 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -506,7 +506,8 @@ gen8_emit_fini_breadcrumb_tail(struct i915_request *rq, u32 *cs)
  	*cs++ = MI_USER_INTERRUPT;
*cs++ = MI_ARB_ON_OFF | MI_ARB_ENABLE;
-	if (intel_engine_has_semaphores(rq->engine))
+	if (intel_engine_has_semaphores(rq->engine) &&
+	    !intel_uc_uses_guc_submission(&rq->engine->gt->uc))
  		cs = emit_preempt_busywait(rq, cs);
rq->tail = intel_ring_offset(rq, cs);
@@ -598,7 +599,8 @@ gen12_emit_fini_breadcrumb_tail(struct i915_request *rq, u32 *cs)
  	*cs++ = MI_USER_INTERRUPT;
*cs++ = MI_ARB_ON_OFF | MI_ARB_ENABLE;
-	if (intel_engine_has_semaphores(rq->engine))
+	if (intel_engine_has_semaphores(rq->engine) &&
+	    !intel_uc_uses_guc_submission(&rq->engine->gt->uc))
  		cs = gen12_emit_preempt_busywait(rq, cs);
rq->tail = intel_ring_offset(rq, cs);




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux