diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 26 |
1 files changed, 3 insertions, 23 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 0f29e07a9581..7d753dc1b89d 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -642,29 +642,9 @@ static inline bool intel_engine_has_waiter(const struct intel_engine_cs *engine) return rcu_access_pointer(engine->breadcrumbs.irq_seqno_bh); } -static inline bool intel_engine_wakeup(const struct intel_engine_cs *engine) -{ - bool wakeup = false; - - /* Note that for this not to dangerously chase a dangling pointer, - * we must hold the rcu_read_lock here. - * - * Also note that tsk is likely to be in !TASK_RUNNING state so an - * early test for tsk->state != TASK_RUNNING before wake_up_process() - * is unlikely to be beneficial. - */ - if (intel_engine_has_waiter(engine)) { - struct task_struct *tsk; - - rcu_read_lock(); - tsk = rcu_dereference(engine->breadcrumbs.irq_seqno_bh); - if (tsk) - wakeup = wake_up_process(tsk); - rcu_read_unlock(); - } - - return wakeup; -} +unsigned int intel_engine_wakeup(struct intel_engine_cs *engine); +#define ENGINE_WAKEUP_WAITER BIT(0) +#define ENGINE_WAKEUP_ACTIVE BIT(1) void intel_engine_reset_breadcrumbs(struct intel_engine_cs *engine); void intel_engine_fini_breadcrumbs(struct intel_engine_cs *engine); |