From 22916bad07a5d42dbb6797f4f0c87a0a5842ec6c Mon Sep 17 00:00:00 2001 From: Matthew Brost Date: Thu, 17 Jun 2021 18:06:38 -0700 Subject: [PATCH] drm/i915: Move submission tasklet to i915_sched_engine The submission tasklet operates on i915_sched_engine, thus it is the correct place for it. v3: (Jason Ekstrand) Change sched_engine->engine to a void* private data pointer Add kernel doc v4: (Daniele) Update private_data comment Set queue_priority_hint in kick_execlists v5: (CI) Rebase and fix build error Signed-off-by: Matthew Brost Reviewed-by: Daniele Ceraolo Spurio Signed-off-by: Matt Roper Link: https://patchwork.freedesktop.org/patch/msgid/20210618010638.98941-9-matthew.brost@intel.com --- drivers/gpu/drm/i915/gt/intel_engine.h | 14 ---- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 12 ++-- drivers/gpu/drm/i915/gt/intel_engine_types.h | 5 -- .../gpu/drm/i915/gt/intel_execlists_submission.c | 84 ++++++++++++---------- drivers/gpu/drm/i915/gt/mock_engine.c | 1 + drivers/gpu/drm/i915/gt/selftest_execlists.c | 14 ++-- drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 2 +- drivers/gpu/drm/i915/gt/selftest_lrc.c | 6 +- drivers/gpu/drm/i915/gt/selftest_reset.c | 2 +- drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 25 +++---- drivers/gpu/drm/i915/i915_scheduler.c | 1 + drivers/gpu/drm/i915/i915_scheduler.h | 14 ++++ drivers/gpu/drm/i915/i915_scheduler_types.h | 10 +++ 13 files changed, 100 insertions(+), 90 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h index 45ee08f..f911c12 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine.h +++ b/drivers/gpu/drm/i915/gt/intel_engine.h @@ -125,20 +125,6 @@ execlists_active(const struct intel_engine_execlists *execlists) return active; } -static inline void -execlists_active_lock_bh(struct intel_engine_execlists *execlists) -{ - local_bh_disable(); /* prevent local softirq and lock recursion */ - tasklet_lock(&execlists->tasklet); -} - -static inline void -execlists_active_unlock_bh(struct intel_engine_execlists *execlists) -{ - tasklet_unlock(&execlists->tasklet); - local_bh_enable(); /* restore softirq, and kick ksoftirqd! */ -} - struct i915_request * execlists_unwind_incomplete_requests(struct intel_engine_execlists *execlists); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 8e0a8ee..8869482 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -713,6 +713,7 @@ static int engine_setup_common(struct intel_engine_cs *engine) err = -ENOMEM; goto err_sched_engine; } + engine->sched_engine->private_data = engine; err = intel_engine_init_cmd_parser(engine); if (err) @@ -944,7 +945,6 @@ int intel_engines_init(struct intel_gt *gt) void intel_engine_cleanup_common(struct intel_engine_cs *engine) { GEM_BUG_ON(!list_empty(&engine->sched_engine->requests)); - tasklet_kill(&engine->execlists.tasklet); /* flush the callback */ i915_sched_engine_put(engine->sched_engine); intel_breadcrumbs_free(engine->breadcrumbs); @@ -1193,7 +1193,7 @@ static bool ring_is_idle(struct intel_engine_cs *engine) void __intel_engine_flush_submission(struct intel_engine_cs *engine, bool sync) { - struct tasklet_struct *t = &engine->execlists.tasklet; + struct tasklet_struct *t = &engine->sched_engine->tasklet; if (!t->callback) return; @@ -1454,8 +1454,8 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine, drm_printf(m, "\tExeclist tasklet queued? %s (%s), preempt? %s, timeslice? %s\n", yesno(test_bit(TASKLET_STATE_SCHED, - &engine->execlists.tasklet.state)), - enableddisabled(!atomic_read(&engine->execlists.tasklet.count)), + &engine->sched_engine->tasklet.state)), + enableddisabled(!atomic_read(&engine->sched_engine->tasklet.count)), repr_timer(&engine->execlists.preempt), repr_timer(&engine->execlists.timer)); @@ -1479,7 +1479,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine, idx, hws[idx * 2], hws[idx * 2 + 1]); } - execlists_active_lock_bh(execlists); + i915_sched_engine_active_lock_bh(engine->sched_engine); rcu_read_lock(); for (port = execlists->active; (rq = *port); port++) { char hdr[160]; @@ -1510,7 +1510,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine, i915_request_show(m, rq, hdr, 0); } rcu_read_unlock(); - execlists_active_unlock_bh(execlists); + i915_sched_engine_active_unlock_bh(engine->sched_engine); } else if (GRAPHICS_VER(dev_priv) > 6) { drm_printf(m, "\tPP_DIR_BASE: 0x%08x\n", ENGINE_READ(engine, RING_PP_DIR_BASE)); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 0bb65c5..5b91068 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -139,11 +139,6 @@ struct st_preempt_hang { */ struct intel_engine_execlists { /** - * @tasklet: softirq tasklet for bottom handler - */ - struct tasklet_struct tasklet; - - /** * @timer: kick the current context if its timeslice expires */ struct timer_list timer; diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index ffad4d98..cdb2126 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -570,7 +570,7 @@ static void kick_siblings(struct i915_request *rq, struct intel_context *ce) resubmit_virtual_request(rq, ve); if (READ_ONCE(ve->request)) - tasklet_hi_schedule(&ve->base.execlists.tasklet); + tasklet_hi_schedule(&ve->base.sched_engine->tasklet); } static void __execlists_schedule_out(struct i915_request * const rq, @@ -739,9 +739,9 @@ trace_ports(const struct intel_engine_execlists *execlists, } static bool -reset_in_progress(const struct intel_engine_execlists *execlists) +reset_in_progress(const struct intel_engine_cs *engine) { - return unlikely(!__tasklet_is_enabled(&execlists->tasklet)); + return unlikely(!__tasklet_is_enabled(&engine->sched_engine->tasklet)); } static __maybe_unused noinline bool @@ -757,7 +757,7 @@ assert_pending_valid(const struct intel_engine_execlists *execlists, trace_ports(execlists, msg, execlists->pending); /* We may be messing around with the lists during reset, lalala */ - if (reset_in_progress(execlists)) + if (reset_in_progress(engine)) return true; if (!execlists->pending[0]) { @@ -1190,7 +1190,7 @@ static void start_timeslice(struct intel_engine_cs *engine) * its timeslice, so recheck. */ if (!timer_pending(&el->timer)) - tasklet_hi_schedule(&el->tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); return; } @@ -1772,8 +1772,8 @@ process_csb(struct intel_engine_cs *engine, struct i915_request **inactive) * access. Either we are inside the tasklet, or the tasklet is disabled * and we assume that is only inside the reset paths and so serialised. */ - GEM_BUG_ON(!tasklet_is_locked(&execlists->tasklet) && - !reset_in_progress(execlists)); + GEM_BUG_ON(!tasklet_is_locked(&engine->sched_engine->tasklet) && + !reset_in_progress(engine)); /* * Note that csb_write, csb_status may be either in HWSP or mmio. @@ -2131,7 +2131,7 @@ static void execlists_unhold(struct intel_engine_cs *engine, if (rq_prio(rq) > engine->sched_engine->queue_priority_hint) { engine->sched_engine->queue_priority_hint = rq_prio(rq); - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); } spin_unlock_irq(&engine->sched_engine->lock); @@ -2322,13 +2322,13 @@ static void execlists_reset(struct intel_engine_cs *engine, const char *msg) ENGINE_TRACE(engine, "reset for %s\n", msg); /* Mark this tasklet as disabled to avoid waiting for it to complete */ - tasklet_disable_nosync(&engine->execlists.tasklet); + tasklet_disable_nosync(&engine->sched_engine->tasklet); ring_set_paused(engine, 1); /* Freeze the current request in place */ execlists_capture(engine); intel_engine_reset(engine, msg); - tasklet_enable(&engine->execlists.tasklet); + tasklet_enable(&engine->sched_engine->tasklet); clear_and_wake_up_bit(bit, lock); } @@ -2351,8 +2351,9 @@ static bool preempt_timeout(const struct intel_engine_cs *const engine) */ static void execlists_submission_tasklet(struct tasklet_struct *t) { - struct intel_engine_cs * const engine = - from_tasklet(engine, t, execlists.tasklet); + struct i915_sched_engine *sched_engine = + from_tasklet(sched_engine, t, tasklet); + struct intel_engine_cs * const engine = sched_engine->private_data; struct i915_request *post[2 * EXECLIST_MAX_PORTS]; struct i915_request **inactive; @@ -2427,13 +2428,16 @@ static void execlists_irq_handler(struct intel_engine_cs *engine, u16 iir) intel_engine_signal_breadcrumbs(engine); if (tasklet) - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); } static void __execlists_kick(struct intel_engine_execlists *execlists) { + struct intel_engine_cs *engine = + container_of(execlists, typeof(*engine), execlists); + /* Kick the tasklet for some interrupt coalescing and reset handling */ - tasklet_hi_schedule(&execlists->tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); } #define execlists_kick(t, member) \ @@ -2808,10 +2812,8 @@ static int execlists_resume(struct intel_engine_cs *engine) static void execlists_reset_prepare(struct intel_engine_cs *engine) { - struct intel_engine_execlists * const execlists = &engine->execlists; - ENGINE_TRACE(engine, "depth<-%d\n", - atomic_read(&execlists->tasklet.count)); + atomic_read(&engine->sched_engine->tasklet.count)); /* * Prevent request submission to the hardware until we have @@ -2822,8 +2824,8 @@ static void execlists_reset_prepare(struct intel_engine_cs *engine) * Turning off the execlists->tasklet until the reset is over * prevents the race. */ - __tasklet_disable_sync_once(&execlists->tasklet); - GEM_BUG_ON(!reset_in_progress(execlists)); + __tasklet_disable_sync_once(&engine->sched_engine->tasklet); + GEM_BUG_ON(!reset_in_progress(engine)); /* * We stop engines, otherwise we might get failed reset and a @@ -2973,8 +2975,9 @@ static void execlists_reset_rewind(struct intel_engine_cs *engine, bool stalled) static void nop_submission_tasklet(struct tasklet_struct *t) { - struct intel_engine_cs * const engine = - from_tasklet(engine, t, execlists.tasklet); + struct i915_sched_engine *sched_engine = + from_tasklet(sched_engine, t, tasklet); + struct intel_engine_cs * const engine = sched_engine->private_data; /* The driver is wedged; don't process any more events. */ WRITE_ONCE(engine->sched_engine->queue_priority_hint, INT_MIN); @@ -3061,8 +3064,8 @@ static void execlists_reset_cancel(struct intel_engine_cs *engine) sched_engine->queue_priority_hint = INT_MIN; sched_engine->queue = RB_ROOT_CACHED; - GEM_BUG_ON(__tasklet_is_enabled(&execlists->tasklet)); - execlists->tasklet.callback = nop_submission_tasklet; + GEM_BUG_ON(__tasklet_is_enabled(&engine->sched_engine->tasklet)); + engine->sched_engine->tasklet.callback = nop_submission_tasklet; spin_unlock_irqrestore(&engine->sched_engine->lock, flags); rcu_read_unlock(); @@ -3082,14 +3085,14 @@ static void execlists_reset_finish(struct intel_engine_cs *engine) * reset as the next level of recovery, and as a final resort we * will declare the device wedged. */ - GEM_BUG_ON(!reset_in_progress(execlists)); + GEM_BUG_ON(!reset_in_progress(engine)); /* And kick in case we missed a new request submission. */ - if (__tasklet_enable(&execlists->tasklet)) + if (__tasklet_enable(&engine->sched_engine->tasklet)) __execlists_kick(execlists); ENGINE_TRACE(engine, "depth->%d\n", - atomic_read(&execlists->tasklet.count)); + atomic_read(&engine->sched_engine->tasklet.count)); } static void gen8_logical_ring_enable_irq(struct intel_engine_cs *engine) @@ -3163,7 +3166,7 @@ static void kick_execlists(const struct i915_request *rq, int prio) * so kiss. */ if (prio >= max(I915_PRIORITY_NORMAL, rq_prio(inflight))) - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&sched_engine->tasklet); unlock: rcu_read_unlock(); @@ -3174,7 +3177,7 @@ static void execlists_set_default_submission(struct intel_engine_cs *engine) engine->submit_request = execlists_submit_request; engine->sched_engine->schedule = i915_schedule; engine->sched_engine->kick_backend = kick_execlists; - engine->execlists.tasklet.callback = execlists_submission_tasklet; + engine->sched_engine->tasklet.callback = execlists_submission_tasklet; } static void execlists_shutdown(struct intel_engine_cs *engine) @@ -3182,7 +3185,7 @@ static void execlists_shutdown(struct intel_engine_cs *engine) /* Synchronise with residual timers and any softirq they raise */ del_timer_sync(&engine->execlists.timer); del_timer_sync(&engine->execlists.preempt); - tasklet_kill(&engine->execlists.tasklet); + tasklet_kill(&engine->sched_engine->tasklet); } static void execlists_release(struct intel_engine_cs *engine) @@ -3298,7 +3301,7 @@ int intel_execlists_submission_setup(struct intel_engine_cs *engine) struct intel_uncore *uncore = engine->uncore; u32 base = engine->mmio_base; - tasklet_setup(&engine->execlists.tasklet, execlists_submission_tasklet); + tasklet_setup(&engine->sched_engine->tasklet, execlists_submission_tasklet); timer_setup(&engine->execlists.timer, execlists_timeslice, 0); timer_setup(&engine->execlists.preempt, execlists_preempt, 0); @@ -3380,7 +3383,7 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk) * rbtrees as in the case it is running in parallel, it may reinsert * the rb_node into a sibling. */ - tasklet_kill(&ve->base.execlists.tasklet); + tasklet_kill(&ve->base.sched_engine->tasklet); /* Decouple ourselves from the siblings, no more access allowed. */ for (n = 0; n < ve->num_siblings; n++) { @@ -3392,13 +3395,13 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk) spin_lock_irq(&sibling->sched_engine->lock); - /* Detachment is lazily performed in the execlists tasklet */ + /* Detachment is lazily performed in the sched_engine->tasklet */ if (!RB_EMPTY_NODE(node)) rb_erase_cached(node, &sibling->execlists.virtual); spin_unlock_irq(&sibling->sched_engine->lock); } - GEM_BUG_ON(__tasklet_is_scheduled(&ve->base.execlists.tasklet)); + GEM_BUG_ON(__tasklet_is_scheduled(&ve->base.sched_engine->tasklet)); GEM_BUG_ON(!list_empty(virtual_queue(ve))); lrc_fini(&ve->context); @@ -3545,9 +3548,11 @@ static intel_engine_mask_t virtual_submission_mask(struct virtual_engine *ve) static void virtual_submission_tasklet(struct tasklet_struct *t) { + struct i915_sched_engine *sched_engine = + from_tasklet(sched_engine, t, tasklet); struct virtual_engine * const ve = - from_tasklet(ve, t, base.execlists.tasklet); - const int prio = READ_ONCE(ve->base.sched_engine->queue_priority_hint); + (struct virtual_engine *)sched_engine->private_data; + const int prio = READ_ONCE(sched_engine->queue_priority_hint); intel_engine_mask_t mask; unsigned int n; @@ -3616,7 +3621,7 @@ submit_engine: GEM_BUG_ON(RB_EMPTY_NODE(&node->rb)); node->prio = prio; if (first && prio > sibling->sched_engine->queue_priority_hint) - tasklet_hi_schedule(&sibling->execlists.tasklet); + tasklet_hi_schedule(&sibling->sched_engine->tasklet); unlock_engine: spin_unlock_irq(&sibling->sched_engine->lock); @@ -3657,7 +3662,7 @@ static void virtual_submit_request(struct i915_request *rq) GEM_BUG_ON(!list_empty(virtual_queue(ve))); list_move_tail(&rq->sched.link, virtual_queue(ve)); - tasklet_hi_schedule(&ve->base.execlists.tasklet); + tasklet_hi_schedule(&ve->base.sched_engine->tasklet); unlock: spin_unlock_irqrestore(&ve->base.sched_engine->lock, flags); @@ -3751,6 +3756,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, err = -ENOMEM; goto err_put; } + ve->base.sched_engine->private_data = &ve->base; ve->base.cops = &virtual_context_ops; ve->base.request_alloc = execlists_request_alloc; @@ -3761,7 +3767,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, ve->base.bond_execute = virtual_bond_execute; INIT_LIST_HEAD(virtual_queue(ve)); - tasklet_setup(&ve->base.execlists.tasklet, virtual_submission_tasklet); + tasklet_setup(&ve->base.sched_engine->tasklet, virtual_submission_tasklet); intel_context_init(&ve->context, &ve->base); @@ -3789,7 +3795,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, * layering if we handle cloning of the requests and * submitting a copy into each backend. */ - if (sibling->execlists.tasklet.callback != + if (sibling->sched_engine->tasklet.callback != execlists_submission_tasklet) { err = -ENODEV; goto err_put; diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c index a49fd30..6897039 100644 --- a/drivers/gpu/drm/i915/gt/mock_engine.c +++ b/drivers/gpu/drm/i915/gt/mock_engine.c @@ -349,6 +349,7 @@ int mock_engine_init(struct intel_engine_cs *engine) engine->sched_engine = i915_sched_engine_create(ENGINE_MOCK); if (!engine->sched_engine) return -ENOMEM; + engine->sched_engine->private_data = engine; intel_engine_init_execlists(engine); intel_engine_init__pm(engine); diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c index 72f8cc9..08896ae0 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -43,7 +43,7 @@ static int wait_for_submit(struct intel_engine_cs *engine, unsigned long timeout) { /* Ignore our own attempts to suppress excess tasklets */ - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); timeout += jiffies; do { @@ -553,13 +553,13 @@ static int live_pin_rewind(void *arg) static int engine_lock_reset_tasklet(struct intel_engine_cs *engine) { - tasklet_disable(&engine->execlists.tasklet); + tasklet_disable(&engine->sched_engine->tasklet); local_bh_disable(); if (test_and_set_bit(I915_RESET_ENGINE + engine->id, &engine->gt->reset.flags)) { local_bh_enable(); - tasklet_enable(&engine->execlists.tasklet); + tasklet_enable(&engine->sched_engine->tasklet); intel_gt_set_wedged(engine->gt); return -EBUSY; @@ -574,7 +574,7 @@ static void engine_unlock_reset_tasklet(struct intel_engine_cs *engine) &engine->gt->reset.flags); local_bh_enable(); - tasklet_enable(&engine->execlists.tasklet); + tasklet_enable(&engine->sched_engine->tasklet); } static int live_hold_reset(void *arg) @@ -628,7 +628,7 @@ static int live_hold_reset(void *arg) if (err) goto out; - engine->execlists.tasklet.callback(&engine->execlists.tasklet); + engine->sched_engine->tasklet.callback(&engine->sched_engine->tasklet); GEM_BUG_ON(execlists_active(&engine->execlists) != rq); i915_request_get(rq); @@ -1200,7 +1200,7 @@ static int live_timeslice_rewind(void *arg) while (i915_request_is_active(rq[A2])) { /* semaphore yield! */ /* Wait for the timeslice to kick in */ del_timer(&engine->execlists.timer); - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); intel_engine_flush_submission(engine); } /* -> ELSP[] = { { A:rq1 }, { B:rq1 } } */ @@ -4606,7 +4606,7 @@ static int reset_virtual_engine(struct intel_gt *gt, if (err) goto out_heartbeat; - engine->execlists.tasklet.callback(&engine->execlists.tasklet); + engine->sched_engine->tasklet.callback(&engine->sched_engine->tasklet); GEM_BUG_ON(execlists_active(&engine->execlists) != rq); /* Fake a preemption event; failed of course */ diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c index cec4b99..6a0b04b 100644 --- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c +++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c @@ -1702,7 +1702,7 @@ static int __igt_atomic_reset_engine(struct intel_engine_cs *engine, const struct igt_atomic_section *p, const char *mode) { - struct tasklet_struct * const t = &engine->execlists.tasklet; + struct tasklet_struct * const t = &engine->sched_engine->tasklet; int err; GEM_TRACE("i915_reset_engine(%s:%s) under %s\n", diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c index 3119016..b0977a3 100644 --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c @@ -49,7 +49,7 @@ static int wait_for_submit(struct intel_engine_cs *engine, unsigned long timeout) { /* Ignore our own attempts to suppress excess tasklets */ - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); timeout += jiffies; do { @@ -1613,12 +1613,12 @@ static void garbage_reset(struct intel_engine_cs *engine, local_bh_disable(); if (!test_and_set_bit(bit, lock)) { - tasklet_disable(&engine->execlists.tasklet); + tasklet_disable(&engine->sched_engine->tasklet); if (!rq->fence.error) __intel_engine_reset_bh(engine, NULL); - tasklet_enable(&engine->execlists.tasklet); + tasklet_enable(&engine->sched_engine->tasklet); clear_and_wake_up_bit(bit, lock); } local_bh_enable(); diff --git a/drivers/gpu/drm/i915/gt/selftest_reset.c b/drivers/gpu/drm/i915/gt/selftest_reset.c index 8784257..7a50c9f4 100644 --- a/drivers/gpu/drm/i915/gt/selftest_reset.c +++ b/drivers/gpu/drm/i915/gt/selftest_reset.c @@ -321,7 +321,7 @@ static int igt_atomic_engine_reset(void *arg) goto out_unlock; for_each_engine(engine, gt, id) { - struct tasklet_struct *t = &engine->execlists.tasklet; + struct tasklet_struct *t = &engine->sched_engine->tasklet; if (t->func) tasklet_disable(t); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index cb13cc5..e9c237b 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -241,8 +241,9 @@ done: static void guc_submission_tasklet(struct tasklet_struct *t) { - struct intel_engine_cs * const engine = - from_tasklet(engine, t, execlists.tasklet); + struct i915_sched_engine *sched_engine = + from_tasklet(sched_engine, t, tasklet); + struct intel_engine_cs * const engine = sched_engine->private_data; struct intel_engine_execlists * const execlists = &engine->execlists; struct i915_request **port, *rq; unsigned long flags; @@ -272,14 +273,12 @@ static void cs_irq_handler(struct intel_engine_cs *engine, u16 iir) { if (iir & GT_RENDER_USER_INTERRUPT) { intel_engine_signal_breadcrumbs(engine); - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); } } static void guc_reset_prepare(struct intel_engine_cs *engine) { - struct intel_engine_execlists * const execlists = &engine->execlists; - ENGINE_TRACE(engine, "\n"); /* @@ -291,7 +290,7 @@ static void guc_reset_prepare(struct intel_engine_cs *engine) * Turning off the execlists->tasklet until the reset is over * prevents the race. */ - __tasklet_disable_sync_once(&execlists->tasklet); + __tasklet_disable_sync_once(&engine->sched_engine->tasklet); } static void guc_reset_state(struct intel_context *ce, @@ -395,14 +394,12 @@ static void guc_reset_cancel(struct intel_engine_cs *engine) static void guc_reset_finish(struct intel_engine_cs *engine) { - struct intel_engine_execlists * const execlists = &engine->execlists; - - if (__tasklet_enable(&execlists->tasklet)) + if (__tasklet_enable(&engine->sched_engine->tasklet)) /* And kick in case we missed a new request submission. */ - tasklet_hi_schedule(&execlists->tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); ENGINE_TRACE(engine, "depth->%d\n", - atomic_read(&execlists->tasklet.count)); + atomic_read(&engine->sched_engine->tasklet.count)); } /* @@ -520,7 +517,7 @@ static void guc_submit_request(struct i915_request *rq) GEM_BUG_ON(i915_sched_engine_is_empty(engine->sched_engine)); GEM_BUG_ON(list_empty(&rq->sched.link)); - tasklet_hi_schedule(&engine->execlists.tasklet); + tasklet_hi_schedule(&engine->sched_engine->tasklet); spin_unlock_irqrestore(&engine->sched_engine->lock, flags); } @@ -600,7 +597,7 @@ static void guc_release(struct intel_engine_cs *engine) { engine->sanitize = NULL; /* no longer in control, nothing to sanitize */ - tasklet_kill(&engine->execlists.tasklet); + tasklet_kill(&engine->sched_engine->tasklet); intel_engine_cleanup_common(engine); lrc_fini_wa_ctx(engine); @@ -679,7 +676,7 @@ int intel_guc_submission_setup(struct intel_engine_cs *engine) */ GEM_BUG_ON(GRAPHICS_VER(i915) < 11); - tasklet_setup(&engine->execlists.tasklet, guc_submission_tasklet); + tasklet_setup(&engine->sched_engine->tasklet, guc_submission_tasklet); guc_default_vfuncs(engine); guc_default_irqs(engine); diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c index fa8863d..3a58a91 100644 --- a/drivers/gpu/drm/i915/i915_scheduler.c +++ b/drivers/gpu/drm/i915/i915_scheduler.c @@ -436,6 +436,7 @@ void i915_sched_engine_free(struct kref *kref) struct i915_sched_engine *sched_engine = container_of(kref, typeof(*sched_engine), ref); + tasklet_kill(&sched_engine->tasklet); /* flush the callback */ kfree(sched_engine); } diff --git a/drivers/gpu/drm/i915/i915_scheduler.h b/drivers/gpu/drm/i915/i915_scheduler.h index 0014745..650ab8e 100644 --- a/drivers/gpu/drm/i915/i915_scheduler.h +++ b/drivers/gpu/drm/i915/i915_scheduler.h @@ -79,6 +79,20 @@ i915_sched_engine_reset_on_empty(struct i915_sched_engine *sched_engine) sched_engine->no_priolist = false; } +static inline void +i915_sched_engine_active_lock_bh(struct i915_sched_engine *sched_engine) +{ + local_bh_disable(); /* prevent local softirq and lock recursion */ + tasklet_lock(&sched_engine->tasklet); +} + +static inline void +i915_sched_engine_active_unlock_bh(struct i915_sched_engine *sched_engine) +{ + tasklet_unlock(&sched_engine->tasklet); + local_bh_enable(); /* restore softirq, and kick ksoftirqd! */ +} + void i915_request_show_with_schedule(struct drm_printer *m, const struct i915_request *rq, const char *prefix, diff --git a/drivers/gpu/drm/i915/i915_scheduler_types.h b/drivers/gpu/drm/i915/i915_scheduler_types.h index 8bd07d0..5935c31 100644 --- a/drivers/gpu/drm/i915/i915_scheduler_types.h +++ b/drivers/gpu/drm/i915/i915_scheduler_types.h @@ -125,6 +125,11 @@ struct i915_sched_engine { struct list_head hold; /** + * @tasklet: softirq tasklet for submission + */ + struct tasklet_struct tasklet; + + /** * @default_priolist: priority list for I915_PRIORITY_NORMAL */ struct i915_priolist default_priolist; @@ -154,6 +159,11 @@ struct i915_sched_engine { bool no_priolist; /** + * @private_data: private data of the submission backend + */ + void *private_data; + + /** * @kick_backend: kick backend after a request's priority has changed */ void (*kick_backend)(const struct i915_request *rq, -- 2.7.4