Currently, we reset the timer after a pre-eemption event. This has the
side-effect that the timeslice runs into the second context after the
first is completed. To be more fair, we want to reset the clock after
promotion as well.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c
b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 9af1b2b493f4..a6ac37dece0a 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -2285,7 +2285,6 @@ static void process_csb(struct intel_engine_cs *engine)
/* Point active to the new ELSP; prevent overwriting */
WRITE_ONCE(execlists->active, execlists->pending);
- set_timeslice(engine);
if (!inject_preempt_hang(execlists))
ring_set_paused(engine, 0);
@@ -2325,6 +2324,9 @@ static void process_csb(struct intel_engine_cs *engine)
}
} while (head != tail);
+ if (execlists_active(execlists))
+ set_timeslice(engine);
+
execlists->csb_head = head;
/*
--
2.25.0.rc2
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