[PATCH 09/18] drm/i915: Expand bool interruptible to pass flags to i915_wait_request()

[Chris Wilson <chris@chris-wilson.co.uk>]

We need finer control over wakeup behaviour during i915_wait_request(),
so expand the current bool interruptible to a bitmask.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c         | 2 +-
 drivers/gpu/drm/i915/i915_gem_request.c | 7 ++++---
 drivers/gpu/drm/i915/i915_gem_request.h | 7 ++++---
 drivers/gpu/drm/i915/intel_display.c    | 8 ++++----
 drivers/gpu/drm/i915/intel_ringbuffer.c | 3 ++-
 5 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index c06dacdae87f..51bb05f62686 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3746,7 +3746,7 @@ i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
 	if (target == NULL)
 		return 0;
 
-	ret = i915_wait_request(target, true, NULL, NULL);
+	ret = i915_wait_request(target, I915_WAIT_INTERRUPTIBLE, NULL, NULL);
 	i915_gem_request_put(target);
 
 	return ret;
diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index 24eb4b1b7540..3c600ff3e9d5 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -598,7 +598,7 @@ bool __i915_spin_request(const struct drm_i915_gem_request *req,
 /**
  * i915_wait_request - wait until execution of request has finished
  * @req: duh!
- * @interruptible: do an interruptible wait (normally yes)
+ * @flags: how to wait
  * @timeout: in - how long to wait (NULL forever); out - how much time remaining
  * @rps: client to charge for RPS boosting
  *
@@ -613,11 +613,12 @@ bool __i915_spin_request(const struct drm_i915_gem_request *req,
  * errno with remaining time filled in timeout argument.
  */
 int i915_wait_request(struct drm_i915_gem_request *req,
-		      bool interruptible,
+		      unsigned int flags,
 		      s64 *timeout,
 		      struct intel_rps_client *rps)
 {
-	int state = interruptible ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE;
+	const int state = flags & I915_WAIT_INTERRUPTIBLE ?
+		TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE;
 	DEFINE_WAIT(reset);
 	struct intel_wait wait;
 	unsigned long timeout_remain;
diff --git a/drivers/gpu/drm/i915/i915_gem_request.h b/drivers/gpu/drm/i915/i915_gem_request.h
index a231bd318ef0..41de4d9aa3fe 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.h
+++ b/drivers/gpu/drm/i915/i915_gem_request.h
@@ -218,10 +218,11 @@ struct intel_rps_client;
 #define IS_RPS_USER(p) (!IS_ERR_OR_NULL(p))
 
 int i915_wait_request(struct drm_i915_gem_request *req,
-		      bool interruptible,
+		      unsigned int flags,
 		      s64 *timeout,
 		      struct intel_rps_client *rps)
 	__attribute__((nonnull(1)));
+#define I915_WAIT_INTERRUPTIBLE BIT(0)
 
 static inline u32 intel_engine_get_seqno(struct intel_engine_cs *engine);
 
@@ -575,7 +576,7 @@ i915_gem_active_wait(const struct i915_gem_active *active, struct mutex *mutex)
 	if (!request)
 		return 0;
 
-	return i915_wait_request(request, true, NULL, NULL);
+	return i915_wait_request(request, I915_WAIT_INTERRUPTIBLE, NULL, NULL);
 }
 
 /**
@@ -638,7 +639,7 @@ i915_gem_active_retire(struct i915_gem_active *active,
 	if (!request)
 		return 0;
 
-	ret = i915_wait_request(request, true, NULL, NULL);
+	ret = i915_wait_request(request, I915_WAIT_INTERRUPTIBLE, NULL, NULL);
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 2e63e5cfa98d..3e287b8f67f2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12038,8 +12038,7 @@ static void intel_mmio_flip_work_func(struct work_struct *w)
 
 	if (work->flip_queued_req)
 		WARN_ON(i915_wait_request(work->flip_queued_req,
-					  false, NULL,
-					  NO_WAITBOOST));
+					  0, NULL, NO_WAITBOOST));
 
 	/* For framebuffer backed by dmabuf, wait for fence */
 	resv = i915_gem_object_get_dmabuf_resv(obj);
@@ -14099,7 +14098,8 @@ static int intel_atomic_prepare_commit(struct drm_device *dev,
 				continue;
 
 			ret = i915_wait_request(intel_plane_state->wait_req,
-						true, NULL, NULL);
+						I915_WAIT_INTERRUPTIBLE,
+						NULL, NULL);
 			if (ret) {
 				/* Any hang should be swallowed by the wait */
 				WARN_ON(ret == -EIO);
@@ -14317,7 +14317,7 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
 			continue;
 
 		ret = i915_wait_request(intel_plane_state->wait_req,
-					true, NULL, NULL);
+					0, NULL, NULL);
 		/* EIO should be eaten, and we can't get interrupted in the
 		 * worker, and blocking commits have waited already. */
 		WARN_ON(ret);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index cc5bcd14b6df..a6e6f2c49299 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2223,7 +2223,8 @@ static int wait_for_space(struct drm_i915_gem_request *req, int bytes)
 	if (WARN_ON(&target->ring_link == &ring->request_list))
 		return -ENOSPC;
 
-	ret = i915_wait_request(target, true, NULL, NO_WAITBOOST);
+	ret = i915_wait_request(target, I915_WAIT_INTERRUPTIBLE,
+				NULL, NO_WAITBOOST);
 	if (ret)
 		return ret;
 
-- 
2.9.3

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