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drm/i915/execlists: Record preemption for selftests

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Put back the preemption counters lost in commit 22b7a426bb
("drm/i915/execlists: Preempt-to-busy") so that our selftests that
assert no preemption took place continue to function.

v2: But a timeslice is only a "soft" preemption!

Fixes: 22b7a426bb ("drm/i915/execlists: Preempt-to-busy")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190710064454.682-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-07-10 07:44:41 +01:00
parent b33c61db72
commit 58d1b42714
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/i915/gt/intel_lrc.c
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@ -921,6 +921,11 @@ enable_timeslice(struct intel_engine_cs *engine)
return last && need_timeslice(engine, last);
}
static void record_preemption(struct intel_engine_execlists *execlists)
{
(void)I915_SELFTEST_ONLY(execlists->preempt_hang.count++);
}
static void execlists_dequeue(struct intel_engine_cs *engine)
{
struct intel_engine_execlists * const execlists = &engine->execlists;
@ -989,6 +994,8 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
last->fence.seqno,
last->sched.attr.priority,
execlists->queue_priority_hint);
record_preemption(execlists);
/*
* Don't let the RING_HEAD advance past the breadcrumb
* as we unwind (and until we resubmit) so that we do