From: Chris Wilson Date: Wed, 10 Jul 2019 00:54:26 +0000 (-0700) Subject: drm/i915/guc: Remove preemption support for current fw X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=71b0846c17b9c86ffa9a18f09f8cfda4fe41ee86;p=openwrt%2Fstaging%2Fblogic.git drm/i915/guc: Remove preemption support for current fw Preemption via GuC submission is not being supported with its current legacy incarnation. The current FW does support a similar pre-emption flow via H2G, but it is class-based instead of being instance-based, which doesn't fit well with the i915 tracking. To fix this, the firmware is being updated to better support our needs with a new flow, so we can safely remove the old code. v2 (Daniele): resurrect & rebase, reword commit message, remove preempt_context as well Signed-off-by: Chris Wilson Signed-off-by: Daniele Ceraolo Spurio Cc: Chris Wilson Cc: Michal Wajdeczko Cc: Matthew Brost Cc: John Harrison Acked-by: Matthew Brost Reviewed-by: Michał Winiarski Link: https://patchwork.freedesktop.org/patch/msgid/20190710005437.3496-2-daniele.ceraolospurio@intel.com --- diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index e367dce2a696..078592912d97 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -644,18 +644,12 @@ static void init_contexts(struct drm_i915_private *i915) init_llist_head(&i915->contexts.free_list); } -static bool needs_preempt_context(struct drm_i915_private *i915) -{ - return USES_GUC_SUBMISSION(i915); -} - int i915_gem_contexts_init(struct drm_i915_private *dev_priv) { struct i915_gem_context *ctx; /* Reassure ourselves we are only called once */ GEM_BUG_ON(dev_priv->kernel_context); - GEM_BUG_ON(dev_priv->preempt_context); init_contexts(dev_priv); @@ -676,15 +670,6 @@ int i915_gem_contexts_init(struct drm_i915_private *dev_priv) GEM_BUG_ON(!atomic_read(&ctx->hw_id_pin_count)); dev_priv->kernel_context = ctx; - /* highest priority; preempting task */ - if (needs_preempt_context(dev_priv)) { - ctx = i915_gem_context_create_kernel(dev_priv, INT_MAX); - if (!IS_ERR(ctx)) - dev_priv->preempt_context = ctx; - else - DRM_ERROR("Failed to create preempt context; disabling preemption\n"); - } - DRM_DEBUG_DRIVER("%s context support initialized\n", DRIVER_CAPS(dev_priv)->has_logical_contexts ? "logical" : "fake"); @@ -695,8 +680,6 @@ void i915_gem_contexts_fini(struct drm_i915_private *i915) { lockdep_assert_held(&i915->drm.struct_mutex); - if (i915->preempt_context) - destroy_kernel_context(&i915->preempt_context); destroy_kernel_context(&i915->kernel_context); /* Must free all deferred contexts (via flush_workqueue) first */ diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index bdf279fa3b2e..76b5c068a26d 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -841,15 +841,6 @@ int intel_engine_init_common(struct intel_engine_cs *engine) if (ret) return ret; - /* - * Similarly the preempt context must always be available so that - * we can interrupt the engine at any time. However, as preemption - * is optional, we allow it to fail. - */ - if (i915->preempt_context) - pin_context(i915->preempt_context, engine, - &engine->preempt_context); - ret = measure_breadcrumb_dw(engine); if (ret < 0) goto err_unpin; @@ -861,8 +852,6 @@ int intel_engine_init_common(struct intel_engine_cs *engine) return 0; err_unpin: - if (engine->preempt_context) - intel_context_unpin(engine->preempt_context); intel_context_unpin(engine->kernel_context); return ret; } @@ -887,8 +876,6 @@ void intel_engine_cleanup_common(struct intel_engine_cs *engine) if (engine->default_state) i915_gem_object_put(engine->default_state); - if (engine->preempt_context) - intel_context_unpin(engine->preempt_context); intel_context_unpin(engine->kernel_context); GEM_BUG_ON(!llist_empty(&engine->barrier_tasks)); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 7e056114344e..8be63019d707 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -288,7 +288,6 @@ struct intel_engine_cs { struct llist_head barrier_tasks; struct intel_context *kernel_context; /* pinned */ - struct intel_context *preempt_context; /* pinned; optional */ intel_engine_mask_t saturated; /* submitting semaphores too late? */ diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c index 36ba80e6a0b7..da81b3a92d16 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c @@ -145,10 +145,6 @@ int intel_gt_resume(struct intel_gt *gt) if (ce) ce->ops->reset(ce); - ce = engine->preempt_context; - if (ce) - ce->ops->reset(ce); - engine->serial++; /* kernel context lost */ err = engine->resume(engine); diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 3e4f58f19362..b4d195677877 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2010,11 +2010,6 @@ static int i915_guc_info(struct seq_file *m, void *data) seq_printf(m, "\nGuC execbuf client @ %p:\n", guc->execbuf_client); i915_guc_client_info(m, dev_priv, guc->execbuf_client); - if (guc->preempt_client) { - seq_printf(m, "\nGuC preempt client @ %p:\n", - guc->preempt_client); - i915_guc_client_info(m, dev_priv, guc->preempt_client); - } /* Add more as required ... */ diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a9381e404fd5..2fa1d35efcb8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1378,8 +1378,6 @@ struct drm_i915_private { struct intel_engine_cs *engine[I915_NUM_ENGINES]; /* Context used internally to idle the GPU and setup initial state */ struct i915_gem_context *kernel_context; - /* Context only to be used for injecting preemption commands */ - struct i915_gem_context *preempt_context; struct intel_engine_cs *engine_class[MAX_ENGINE_CLASS + 1] [MAX_ENGINE_INSTANCE + 1]; diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c index c40a6efdd33a..501b74f44374 100644 --- a/drivers/gpu/drm/i915/intel_guc.c +++ b/drivers/gpu/drm/i915/intel_guc.c @@ -101,8 +101,6 @@ void intel_guc_init_early(struct intel_guc *guc) static int guc_init_wq(struct intel_guc *guc) { - struct drm_i915_private *dev_priv = guc_to_i915(guc); - /* * GuC log buffer flush work item has to do register access to * send the ack to GuC and this work item, if not synced before @@ -122,31 +120,6 @@ static int guc_init_wq(struct intel_guc *guc) return -ENOMEM; } - /* - * Even though both sending GuC action, and adding a new workitem to - * GuC workqueue are serialized (each with its own locking), since - * we're using mutliple engines, it's possible that we're going to - * issue a preempt request with two (or more - each for different - * engine) workitems in GuC queue. In this situation, GuC may submit - * all of them, which will make us very confused. - * Our preemption contexts may even already be complete - before we - * even had the chance to sent the preempt action to GuC!. Rather - * than introducing yet another lock, we can just use ordered workqueue - * to make sure we're always sending a single preemption request with a - * single workitem. - */ - if (HAS_LOGICAL_RING_PREEMPTION(dev_priv) && - USES_GUC_SUBMISSION(dev_priv)) { - guc->preempt_wq = alloc_ordered_workqueue("i915-guc_preempt", - WQ_HIGHPRI); - if (!guc->preempt_wq) { - destroy_workqueue(guc->log.relay.flush_wq); - DRM_ERROR("Couldn't allocate workqueue for GuC " - "preemption\n"); - return -ENOMEM; - } - } - return 0; } @@ -154,10 +127,6 @@ static void guc_fini_wq(struct intel_guc *guc) { struct workqueue_struct *wq; - wq = fetch_and_zero(&guc->preempt_wq); - if (wq) - destroy_workqueue(wq); - wq = fetch_and_zero(&guc->log.relay.flush_wq); if (wq) destroy_workqueue(wq); diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h index d91c96679dbb..ec1038c1f50e 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -37,11 +37,6 @@ struct __guc_ads_blob; -struct guc_preempt_work { - struct work_struct work; - struct intel_engine_cs *engine; -}; - /* * Top level structure of GuC. It handles firmware loading and manages client * pool and doorbells. intel_guc owns a intel_guc_client to replace the legacy @@ -76,10 +71,6 @@ struct intel_guc { void *shared_data_vaddr; struct intel_guc_client *execbuf_client; - struct intel_guc_client *preempt_client; - - struct guc_preempt_work preempt_work[I915_NUM_ENGINES]; - struct workqueue_struct *preempt_wq; DECLARE_BITMAP(doorbell_bitmap, GUC_NUM_DOORBELLS); /* Cyclic counter mod pagesize */ diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c index f104b94c14ef..8520bb224175 100644 --- a/drivers/gpu/drm/i915/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/intel_guc_submission.c @@ -46,11 +46,10 @@ enum { * * GuC client: * A intel_guc_client refers to a submission path through GuC. Currently, there - * are two clients. One of them (the execbuf_client) is charged with all - * submissions to the GuC, the other one (preempt_client) is responsible for - * preempting the execbuf_client. This struct is the owner of a doorbell, a - * process descriptor and a workqueue (all of them inside a single gem object - * that contains all required pages for these elements). + * is only one client, which is charged with all submissions to the GuC. This + * struct is the owner of a doorbell, a process descriptor and a workqueue (all + * of them inside a single gem object that contains all required pages for these + * elements). * * GuC stage descriptor: * During initialization, the driver allocates a static pool of 1024 such @@ -88,12 +87,6 @@ enum { * */ -static inline u32 intel_hws_preempt_done_address(struct intel_engine_cs *engine) -{ - return (i915_ggtt_offset(engine->status_page.vma) + - I915_GEM_HWS_PREEMPT_ADDR); -} - static inline struct i915_priolist *to_priolist(struct rb_node *rb) { return rb_entry(rb, struct i915_priolist, node); @@ -563,126 +556,6 @@ static void flush_ggtt_writes(struct i915_vma *vma) intel_uncore_posting_read_fw(&i915->uncore, GUC_STATUS); } -static void inject_preempt_context(struct work_struct *work) -{ - struct guc_preempt_work *preempt_work = - container_of(work, typeof(*preempt_work), work); - struct intel_engine_cs *engine = preempt_work->engine; - struct intel_guc *guc = container_of(preempt_work, typeof(*guc), - preempt_work[engine->id]); - struct intel_guc_client *client = guc->preempt_client; - struct guc_stage_desc *stage_desc = __get_stage_desc(client); - struct intel_context *ce = engine->preempt_context; - u32 data[7]; - - if (!ce->ring->emit) { /* recreate upon load/resume */ - u32 addr = intel_hws_preempt_done_address(engine); - u32 *cs; - - cs = ce->ring->vaddr; - if (engine->class == RENDER_CLASS) { - cs = gen8_emit_ggtt_write_rcs(cs, - GUC_PREEMPT_FINISHED, - addr, - PIPE_CONTROL_CS_STALL); - } else { - cs = gen8_emit_ggtt_write(cs, - GUC_PREEMPT_FINISHED, - addr, - 0); - *cs++ = MI_NOOP; - *cs++ = MI_NOOP; - } - *cs++ = MI_USER_INTERRUPT; - *cs++ = MI_NOOP; - - ce->ring->emit = GUC_PREEMPT_BREADCRUMB_BYTES; - GEM_BUG_ON((void *)cs - ce->ring->vaddr != ce->ring->emit); - - flush_ggtt_writes(ce->ring->vma); - } - - spin_lock_irq(&client->wq_lock); - guc_wq_item_append(client, engine->guc_id, lower_32_bits(ce->lrc_desc), - GUC_PREEMPT_BREADCRUMB_BYTES / sizeof(u64), 0); - spin_unlock_irq(&client->wq_lock); - - /* - * If GuC firmware performs an engine reset while that engine had - * a preemption pending, it will set the terminated attribute bit - * on our preemption stage descriptor. GuC firmware retains all - * pending work items for a high-priority GuC client, unlike the - * normal-priority GuC client where work items are dropped. It - * wants to make sure the preempt-to-idle work doesn't run when - * scheduling resumes, and uses this bit to inform its scheduler - * and presumably us as well. Our job is to clear it for the next - * preemption after reset, otherwise that and future preemptions - * will never complete. We'll just clear it every time. - */ - stage_desc->attribute &= ~GUC_STAGE_DESC_ATTR_TERMINATED; - - data[0] = INTEL_GUC_ACTION_REQUEST_PREEMPTION; - data[1] = client->stage_id; - data[2] = INTEL_GUC_PREEMPT_OPTION_DROP_WORK_Q | - INTEL_GUC_PREEMPT_OPTION_DROP_SUBMIT_Q; - data[3] = engine->guc_id; - data[4] = guc->execbuf_client->priority; - data[5] = guc->execbuf_client->stage_id; - data[6] = intel_guc_ggtt_offset(guc, guc->shared_data); - - if (WARN_ON(intel_guc_send(guc, data, ARRAY_SIZE(data)))) { - intel_write_status_page(engine, - I915_GEM_HWS_PREEMPT, - GUC_PREEMPT_NONE); - tasklet_schedule(&engine->execlists.tasklet); - } - - (void)I915_SELFTEST_ONLY(engine->execlists.preempt_hang.count++); -} - -/* - * We're using user interrupt and HWSP value to mark that preemption has - * finished and GPU is idle. Normally, we could unwind and continue similar to - * execlists submission path. Unfortunately, with GuC we also need to wait for - * it to finish its own postprocessing, before attempting to submit. Otherwise - * GuC may silently ignore our submissions, and thus we risk losing request at - * best, executing out-of-order and causing kernel panic at worst. - */ -#define GUC_PREEMPT_POSTPROCESS_DELAY_MS 10 -static void wait_for_guc_preempt_report(struct intel_engine_cs *engine) -{ - struct intel_guc *guc = &engine->i915->guc; - struct guc_shared_ctx_data *data = guc->shared_data_vaddr; - struct guc_ctx_report *report = - &data->preempt_ctx_report[engine->guc_id]; - - if (wait_for_atomic(report->report_return_status == - INTEL_GUC_REPORT_STATUS_COMPLETE, - GUC_PREEMPT_POSTPROCESS_DELAY_MS)) - DRM_ERROR("Timed out waiting for GuC preemption report\n"); - /* - * GuC is expecting that we're also going to clear the affected context - * counter, let's also reset the return status to not depend on GuC - * resetting it after recieving another preempt action - */ - report->affected_count = 0; - report->report_return_status = INTEL_GUC_REPORT_STATUS_UNKNOWN; -} - -static void complete_preempt_context(struct intel_engine_cs *engine) -{ - struct intel_engine_execlists *execlists = &engine->execlists; - - if (inject_preempt_hang(execlists)) - return; - - execlists_cancel_port_requests(execlists); - execlists_unwind_incomplete_requests(execlists); - - wait_for_guc_preempt_report(engine); - intel_write_status_page(engine, I915_GEM_HWS_PREEMPT, GUC_PREEMPT_NONE); -} - static void guc_submit(struct intel_engine_cs *engine, struct i915_request **out, struct i915_request **end) @@ -707,16 +580,6 @@ static inline int rq_prio(const struct i915_request *rq) return rq->sched.attr.priority | __NO_PREEMPTION; } -static inline int effective_prio(const struct i915_request *rq) -{ - int prio = rq_prio(rq); - - if (i915_request_has_nopreempt(rq)) - prio = I915_PRIORITY_UNPREEMPTABLE; - - return prio; -} - static struct i915_request *schedule_in(struct i915_request *rq, int idx) { trace_i915_request_in(rq, idx); @@ -752,22 +615,6 @@ static void __guc_dequeue(struct intel_engine_cs *engine) lockdep_assert_held(&engine->active.lock); if (last) { - if (intel_engine_has_preemption(engine)) { - struct guc_preempt_work *preempt_work = - &engine->i915->guc.preempt_work[engine->id]; - int prio = execlists->queue_priority_hint; - - if (i915_scheduler_need_preempt(prio, - effective_prio(last))) { - intel_write_status_page(engine, - I915_GEM_HWS_PREEMPT, - GUC_PREEMPT_INPROGRESS); - queue_work(engine->i915->guc.preempt_wq, - &preempt_work->work); - return; - } - } - if (*++first) return; @@ -831,12 +678,7 @@ static void guc_submission_tasklet(unsigned long data) memmove(execlists->inflight, port, rem * sizeof(*port)); } - if (intel_read_status_page(engine, I915_GEM_HWS_PREEMPT) == - GUC_PREEMPT_FINISHED) - complete_preempt_context(engine); - - if (!intel_read_status_page(engine, I915_GEM_HWS_PREEMPT)) - __guc_dequeue(engine); + __guc_dequeue(engine); spin_unlock_irqrestore(&engine->active.lock, flags); } @@ -857,16 +699,6 @@ static void guc_reset_prepare(struct intel_engine_cs *engine) * prevents the race. */ __tasklet_disable_sync_once(&execlists->tasklet); - - /* - * We're using worker to queue preemption requests from the tasklet in - * GuC submission mode. - * Even though tasklet was disabled, we may still have a worker queued. - * Let's make sure that all workers scheduled before disabling the - * tasklet are completed before continuing with the reset. - */ - if (engine->i915->guc.preempt_wq) - flush_workqueue(engine->i915->guc.preempt_wq); } static void guc_reset(struct intel_engine_cs *engine, bool stalled) @@ -1123,7 +955,6 @@ static int guc_clients_create(struct intel_guc *guc) struct intel_guc_client *client; GEM_BUG_ON(guc->execbuf_client); - GEM_BUG_ON(guc->preempt_client); client = guc_client_alloc(dev_priv, INTEL_INFO(dev_priv)->engine_mask, @@ -1135,20 +966,6 @@ static int guc_clients_create(struct intel_guc *guc) } guc->execbuf_client = client; - if (dev_priv->preempt_context) { - client = guc_client_alloc(dev_priv, - INTEL_INFO(dev_priv)->engine_mask, - GUC_CLIENT_PRIORITY_KMD_HIGH, - dev_priv->preempt_context); - if (IS_ERR(client)) { - DRM_ERROR("Failed to create GuC client for preemption!\n"); - guc_client_free(guc->execbuf_client); - guc->execbuf_client = NULL; - return PTR_ERR(client); - } - guc->preempt_client = client; - } - return 0; } @@ -1156,10 +973,6 @@ static void guc_clients_destroy(struct intel_guc *guc) { struct intel_guc_client *client; - client = fetch_and_zero(&guc->preempt_client); - if (client) - guc_client_free(client); - client = fetch_and_zero(&guc->execbuf_client); if (client) guc_client_free(client); @@ -1202,28 +1015,11 @@ static void __guc_client_disable(struct intel_guc_client *client) static int guc_clients_enable(struct intel_guc *guc) { - int ret; - - ret = __guc_client_enable(guc->execbuf_client); - if (ret) - return ret; - - if (guc->preempt_client) { - ret = __guc_client_enable(guc->preempt_client); - if (ret) { - __guc_client_disable(guc->execbuf_client); - return ret; - } - } - - return 0; + return __guc_client_enable(guc->execbuf_client); } static void guc_clients_disable(struct intel_guc *guc) { - if (guc->preempt_client) - __guc_client_disable(guc->preempt_client); - if (guc->execbuf_client) __guc_client_disable(guc->execbuf_client); } @@ -1234,9 +1030,6 @@ static void guc_clients_disable(struct intel_guc *guc) */ int intel_guc_submission_init(struct intel_guc *guc) { - struct drm_i915_private *dev_priv = guc_to_i915(guc); - struct intel_engine_cs *engine; - enum intel_engine_id id; int ret; if (guc->stage_desc_pool) @@ -1256,11 +1049,6 @@ int intel_guc_submission_init(struct intel_guc *guc) if (ret) goto err_pool; - for_each_engine(engine, dev_priv, id) { - guc->preempt_work[id].engine = engine; - INIT_WORK(&guc->preempt_work[id].work, inject_preempt_context); - } - return 0; err_pool: @@ -1270,13 +1058,6 @@ err_pool: void intel_guc_submission_fini(struct intel_guc *guc) { - struct drm_i915_private *dev_priv = guc_to_i915(guc); - struct intel_engine_cs *engine; - enum intel_engine_id id; - - for_each_engine(engine, dev_priv, id) - cancel_work_sync(&guc->preempt_work[id].work); - guc_clients_destroy(guc); WARN_ON(!guc_verify_doorbells(guc)); diff --git a/drivers/gpu/drm/i915/selftests/intel_guc.c b/drivers/gpu/drm/i915/selftests/intel_guc.c index 6ca8584cd64c..1a1915e44f6b 100644 --- a/drivers/gpu/drm/i915/selftests/intel_guc.c +++ b/drivers/gpu/drm/i915/selftests/intel_guc.c @@ -103,13 +103,10 @@ static int ring_doorbell_nop(struct intel_guc_client *client) /* * Basic client sanity check, handy to validate create_clients. */ -static int validate_client(struct intel_guc_client *client, - int client_priority, - bool is_preempt_client) +static int validate_client(struct intel_guc_client *client, int client_priority) { struct drm_i915_private *dev_priv = guc_to_i915(client->guc); - struct i915_gem_context *ctx_owner = is_preempt_client ? - dev_priv->preempt_context : dev_priv->kernel_context; + struct i915_gem_context *ctx_owner = dev_priv->kernel_context; if (client->owner != ctx_owner || client->engines != INTEL_INFO(dev_priv)->engine_mask || @@ -163,7 +160,7 @@ static int igt_guc_clients(void *args) */ guc_clients_disable(guc); guc_clients_destroy(guc); - if (guc->execbuf_client || guc->preempt_client) { + if (guc->execbuf_client) { pr_err("guc_clients_destroy lied!\n"); err = -EINVAL; goto unlock; @@ -177,24 +174,14 @@ static int igt_guc_clients(void *args) GEM_BUG_ON(!guc->execbuf_client); err = validate_client(guc->execbuf_client, - GUC_CLIENT_PRIORITY_KMD_NORMAL, false); + GUC_CLIENT_PRIORITY_KMD_NORMAL); if (err) { pr_err("execbug client validation failed\n"); goto out; } - if (guc->preempt_client) { - err = validate_client(guc->preempt_client, - GUC_CLIENT_PRIORITY_KMD_HIGH, true); - if (err) { - pr_err("preempt client validation failed\n"); - goto out; - } - } - - /* each client should now have reserved a doorbell */ - if (!has_doorbell(guc->execbuf_client) || - (guc->preempt_client && !has_doorbell(guc->preempt_client))) { + /* the client should now have reserved a doorbell */ + if (!has_doorbell(guc->execbuf_client)) { pr_err("guc_clients_create didn't reserve doorbells\n"); err = -EINVAL; goto out; @@ -204,8 +191,7 @@ static int igt_guc_clients(void *args) guc_clients_enable(guc); /* each client should now have received a doorbell */ - if (!client_doorbell_in_sync(guc->execbuf_client) || - !client_doorbell_in_sync(guc->preempt_client)) { + if (!client_doorbell_in_sync(guc->execbuf_client)) { pr_err("failed to initialize the doorbells\n"); err = -EINVAL; goto out; @@ -300,8 +286,7 @@ static int igt_guc_doorbells(void *arg) goto out; } - err = validate_client(clients[i], - i % GUC_CLIENT_PRIORITY_NUM, false); + err = validate_client(clients[i], i % GUC_CLIENT_PRIORITY_NUM); if (err) { pr_err("[%d] client_alloc sanity check failed!\n", i); err = -EINVAL;