diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c index 2c27b3491e28..175bede6df43 100644 --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c @@ -4015,6 +4015,32 @@ static int emit_semaphore_signal(struct intel_context *ce, void *slot) return 0; } +static int context_flush(struct intel_context *ce, long timeout) +{ + struct i915_request *rq; + struct dma_fence *fence; + int err = 0; + + rq = intel_engine_create_kernel_request(ce->engine); + if (IS_ERR(rq)) + return PTR_ERR(rq); + + fence = i915_active_fence_get(&ce->timeline->last_request); + if (fence) { + i915_request_await_dma_fence(rq, fence); + dma_fence_put(fence); + } + + rq = i915_request_get(rq); + i915_request_add(rq); + if (i915_request_wait(rq, 0, timeout) < 0) + err = -ETIME; + i915_request_put(rq); + + rmb(); /* We know the request is written, make sure all state is too! */ + return err; +} + static int live_lrc_layout(void *arg) { struct intel_gt *gt = arg; @@ -4638,18 +4664,10 @@ static int __lrc_timestamp(const struct lrc_timestamp *arg, bool preempt) wmb(); } - if (i915_request_wait(rq, 0, HZ / 2) < 0) { - err = -ETIME; + /* And wait for switch to kernel (to save our context to memory) */ + err = context_flush(arg->ce[0], HZ / 2); + if (err) goto err; - } - - /* and wait for switch to kernel */ - if (igt_flush_test(arg->engine->i915)) { - err = -EIO; - goto err; - } - - rmb(); if (!timestamp_advanced(arg->poison, slot[1])) { pr_err("%s(%s): invalid timestamp on restore, context:%x, request:%x\n",