diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_breadcrumbs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_breadcrumbs.c | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c index 4e00e5cb9fa1..bcbc7abe6693 100644 --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c @@ -64,7 +64,7 @@ static unsigned long wait_timeout(void) static noinline void missed_breadcrumb(struct intel_engine_cs *engine) { - DRM_DEBUG_DRIVER("%s missed breadcrumb at %pF, irq posted? %s, current seqno=%x, last=%x\n", + DRM_DEBUG_DRIVER("%s missed breadcrumb at %pS, irq posted? %s, current seqno=%x, last=%x\n", engine->name, __builtin_return_address(0), yesno(test_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted)), @@ -74,9 +74,10 @@ static noinline void missed_breadcrumb(struct intel_engine_cs *engine) set_bit(engine->id, &engine->i915->gpu_error.missed_irq_rings); } -static void intel_breadcrumbs_hangcheck(unsigned long data) +static void intel_breadcrumbs_hangcheck(struct timer_list *t) { - struct intel_engine_cs *engine = (struct intel_engine_cs *)data; + struct intel_engine_cs *engine = from_timer(engine, t, + breadcrumbs.hangcheck); struct intel_breadcrumbs *b = &engine->breadcrumbs; if (!b->irq_armed) @@ -108,9 +109,10 @@ static void intel_breadcrumbs_hangcheck(unsigned long data) } } -static void intel_breadcrumbs_fake_irq(unsigned long data) +static void intel_breadcrumbs_fake_irq(struct timer_list *t) { - struct intel_engine_cs *engine = (struct intel_engine_cs *)data; + struct intel_engine_cs *engine = from_timer(engine, t, + breadcrumbs.fake_irq); struct intel_breadcrumbs *b = &engine->breadcrumbs; /* The timer persists in case we cannot enable interrupts, @@ -184,7 +186,7 @@ void intel_engine_disarm_breadcrumbs(struct intel_engine_cs *engine) struct intel_wait *wait, *n, *first; if (!b->irq_armed) - return; + goto wakeup_signaler; /* We only disarm the irq when we are idle (all requests completed), * so if the bottom-half remains asleep, it missed the request @@ -206,6 +208,14 @@ void intel_engine_disarm_breadcrumbs(struct intel_engine_cs *engine) b->waiters = RB_ROOT; spin_unlock_irq(&b->rb_lock); + + /* + * The signaling thread may be asleep holding a reference to a request, + * that had its signaling cancelled prior to being preempted. We need + * to kick the signaler, just in case, to release any such reference. + */ +wakeup_signaler: + wake_up_process(b->signaler); } static bool use_fake_irq(const struct intel_breadcrumbs *b) @@ -515,6 +525,7 @@ static void __intel_engine_remove_wait(struct intel_engine_cs *engine, GEM_BUG_ON(RB_EMPTY_NODE(&wait->node)); rb_erase(&wait->node, &b->waiters); + RB_CLEAR_NODE(&wait->node); out: GEM_BUG_ON(b->irq_wait == wait); @@ -648,23 +659,15 @@ static int intel_breadcrumbs_signaler(void *arg) } if (unlikely(do_schedule)) { - DEFINE_WAIT(exec); - if (kthread_should_park()) kthread_parkme(); - if (kthread_should_stop()) { - GEM_BUG_ON(request); + if (unlikely(kthread_should_stop())) { + i915_gem_request_put(request); break; } - if (request) - add_wait_queue(&request->execute, &exec); - schedule(); - - if (request) - remove_wait_queue(&request->execute, &exec); } i915_gem_request_put(request); } while (1); @@ -787,12 +790,8 @@ int intel_engine_init_breadcrumbs(struct intel_engine_cs *engine) spin_lock_init(&b->rb_lock); spin_lock_init(&b->irq_lock); - setup_timer(&b->fake_irq, - intel_breadcrumbs_fake_irq, - (unsigned long)engine); - setup_timer(&b->hangcheck, - intel_breadcrumbs_hangcheck, - (unsigned long)engine); + timer_setup(&b->fake_irq, intel_breadcrumbs_fake_irq, 0); + timer_setup(&b->hangcheck, intel_breadcrumbs_hangcheck, 0); /* Spawn a thread to provide a common bottom-half for all signals. * As this is an asynchronous interface we cannot steal the current |