diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_engine_pm.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_pm.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.h b/drivers/gpu/drm/i915/gt/intel_engine_pm.h index 24e20344dc22..e52c2b0cb245 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_pm.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.h @@ -7,6 +7,7 @@ #ifndef INTEL_ENGINE_PM_H #define INTEL_ENGINE_PM_H +#include "i915_request.h" #include "intel_engine_types.h" #include "intel_wakeref.h" @@ -41,6 +42,26 @@ static inline void intel_engine_pm_flush(struct intel_engine_cs *engine) intel_wakeref_unlock_wait(&engine->wakeref); } +static inline struct i915_request * +intel_engine_create_kernel_request(struct intel_engine_cs *engine) +{ + struct i915_request *rq; + + /* + * The engine->kernel_context is special as it is used inside + * the engine-pm barrier (see __engine_park()), circumventing + * the usual mutexes and relying on the engine-pm barrier + * instead. So whenever we use the engine->kernel_context + * outside of the barrier, we must manually handle the + * engine wakeref to serialise with the use inside. + */ + intel_engine_pm_get(engine); + rq = i915_request_create(engine->kernel_context); + intel_engine_pm_put(engine); + + return rq; +} + void intel_engine_init__pm(struct intel_engine_cs *engine); #endif /* INTEL_ENGINE_PM_H */ |