diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_breadcrumbs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_breadcrumbs.c | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c index c410d3d6465f..c9c46a538edb 100644 --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c @@ -629,35 +629,28 @@ void intel_engine_fini_breadcrumbs(struct intel_engine_cs *engine) cancel_fake_irq(engine); } -unsigned int intel_kick_waiters(struct drm_i915_private *i915) +unsigned int intel_breadcrumbs_busy(struct drm_i915_private *i915) { struct intel_engine_cs *engine; enum intel_engine_id id; unsigned int mask = 0; - /* To avoid the task_struct disappearing beneath us as we wake up - * the process, we must first inspect the task_struct->state under the - * RCU lock, i.e. as we call wake_up_process() we must be holding the - * rcu_read_lock(). - */ - for_each_engine(engine, i915, id) - if (unlikely(intel_engine_wakeup(engine))) - mask |= intel_engine_flag(engine); + for_each_engine(engine, i915, id) { + struct intel_breadcrumbs *b = &engine->breadcrumbs; - return mask; -} + spin_lock_irq(&b->lock); -unsigned int intel_kick_signalers(struct drm_i915_private *i915) -{ - struct intel_engine_cs *engine; - enum intel_engine_id id; - unsigned int mask = 0; + if (b->first_wait) { + wake_up_process(b->first_wait->tsk); + mask |= intel_engine_flag(engine); + } - for_each_engine(engine, i915, id) { - if (unlikely(READ_ONCE(engine->breadcrumbs.first_signal))) { - wake_up_process(engine->breadcrumbs.signaler); + if (b->first_signal) { + wake_up_process(b->signaler); mask |= intel_engine_flag(engine); } + + spin_unlock_irq(&b->lock); } return mask; |