From: Chris Wilson Date: Wed, 10 Jul 2019 06:44:41 +0000 (+0100) Subject: drm/i915/execlists: Record preemption for selftests X-Git-Tag: Ubuntu-5.4-5.4.0-11.14~2016^2~19^2~165 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=58d1b427148a3bd16e62f16558d2f45527727eb1;p=mirror_ubuntu-focal-kernel.git drm/i915/execlists: Record preemption for selftests Put back the preemption counters lost in commit 22b7a426bbe1 ("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: 22b7a426bbe1 ("drm/i915/execlists: Preempt-to-busy") Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Cc: Mika Kuoppala Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20190710064454.682-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 19ce8eb5e5c9..270ef417dd1a 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -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