1 files changed, 41 insertions, 6 deletions

diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h
index 620b6fab2c5c..1bfe214a47e9 100644
--- a/drivers/gpu/drm/i915/i915_request.h
+++ b/drivers/gpu/drm/i915/i915_request.h
@@ -43,6 +43,7 @@
 
 struct drm_file;
 struct drm_i915_gem_object;
+struct drm_printer;
 struct i915_request;
 
 struct i915_capture_list {
@@ -308,12 +309,14 @@ __i915_request_create(struct intel_context *ce, gfp_t gfp);
 struct i915_request * __must_check
 i915_request_create(struct intel_context *ce);
 
-void i915_request_set_error_once(struct i915_request *rq, int error);
 void __i915_request_skip(struct i915_request *rq);
+void i915_request_set_error_once(struct i915_request *rq, int error);
+void i915_request_mark_eio(struct i915_request *rq);
 
 struct i915_request *__i915_request_commit(struct i915_request *request);
 void __i915_request_queue(struct i915_request *rq,
 			  const struct i915_sched_attr *attr);
+void __i915_request_queue_bh(struct i915_request *rq);
 
 bool i915_request_retire(struct i915_request *rq);
 void i915_request_retire_upto(struct i915_request *rq);
@@ -371,6 +374,11 @@ long i915_request_wait(struct i915_request *rq,
 #define I915_WAIT_PRIORITY	BIT(1) /* small priority bump for the request */
 #define I915_WAIT_ALL		BIT(2) /* used by i915_gem_object_wait() */
 
+void i915_request_show(struct drm_printer *m,
+		       const struct i915_request *rq,
+		       const char *prefix,
+		       int indent);
+
 static inline bool i915_request_signaled(const struct i915_request *rq)
 {
 	/* The request may live longer than its HWSP, so check flags first! */
@@ -434,7 +442,7 @@ static inline u32 hwsp_seqno(const struct i915_request *rq)
 
 static inline bool __i915_request_has_started(const struct i915_request *rq)
 {
-	return i915_seqno_passed(hwsp_seqno(rq), rq->fence.seqno - 1);
+	return i915_seqno_passed(__hwsp_seqno(rq), rq->fence.seqno - 1);
 }
 
 /**
@@ -465,11 +473,19 @@ static inline bool __i915_request_has_started(const struct i915_request *rq)
  */
 static inline bool i915_request_started(const struct i915_request *rq)
 {
+	bool result;
+
 	if (i915_request_signaled(rq))
 		return true;
 
-	/* Remember: started but may have since been preempted! */
-	return __i915_request_has_started(rq);
+	result = true;
+	rcu_read_lock(); /* the HWSP may be freed at runtime */
+	if (likely(!i915_request_signaled(rq)))
+		/* Remember: started but may have since been preempted! */
+		result = __i915_request_has_started(rq);
+	rcu_read_unlock();
+
+	return result;
 }
 
 /**
@@ -482,10 +498,16 @@ static inline bool i915_request_started(const struct i915_request *rq)
  */
 static inline bool i915_request_is_running(const struct i915_request *rq)
 {
+	bool result;
+
 	if (!i915_request_is_active(rq))
 		return false;
 
-	return __i915_request_has_started(rq);
+	rcu_read_lock();
+	result = __i915_request_has_started(rq) && i915_request_is_active(rq);
+	rcu_read_unlock();
+
+	return result;
 }
 
 /**
@@ -509,12 +531,25 @@ static inline bool i915_request_is_ready(const struct i915_request *rq)
 	return !list_empty(&rq->sched.link);
 }
 
+static inline bool __i915_request_is_complete(const struct i915_request *rq)
+{
+	return i915_seqno_passed(__hwsp_seqno(rq), rq->fence.seqno);
+}
+
 static inline bool i915_request_completed(const struct i915_request *rq)
 {
+	bool result;
+
 	if (i915_request_signaled(rq))
 		return true;
 
-	return i915_seqno_passed(hwsp_seqno(rq), rq->fence.seqno);
+	result = true;
+	rcu_read_lock(); /* the HWSP may be freed at runtime */
+	if (likely(!i915_request_signaled(rq)))
+		result = __i915_request_is_complete(rq);
+	rcu_read_unlock();
+
+	return result;
 }
 
 static inline void i915_request_mark_complete(struct i915_request *rq)