[RFC 32/34] drm/xe: Kill xe_device_mem_access_{get*,put}

[Rodrigo Vivi]

No extra callers, so let's simply kill them for good.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/xe/xe_device.c       | 53 ----------------------------
 drivers/gpu/drm/xe/xe_device.h       |  4 ---
 drivers/gpu/drm/xe/xe_device_types.h |  3 --
 3 files changed, 60 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index 0b27e09b3db9..c76e12ec673a 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -683,59 +683,6 @@ void xe_device_assert_mem_access(struct xe_device *xe)
 	XE_WARN_ON(xe_pm_runtime_suspended(xe));
 }
 
-bool xe_device_mem_access_get_if_ongoing(struct xe_device *xe)
-{
-	bool active;
-
-	if (xe_pm_read_callback_task(xe) == current)
-		return true;
-
-	active = xe_pm_runtime_get_if_active(xe);
-	if (active) {
-		int ref = atomic_inc_return(&xe->mem_access.ref);
-
-		xe_assert(xe, ref != S32_MAX);
-	}
-
-	return active;
-}
-
-void xe_device_mem_access_get(struct xe_device *xe)
-{
-	int ref;
-
-	/*
-	 * This looks racy, but should be fine since the pm_callback_task only
-	 * transitions from NULL -> current (and back to NULL again), during the
-	 * runtime_resume() or runtime_suspend() callbacks, for which there can
-	 * only be a single one running for our device. We only need to prevent
-	 * recursively calling the runtime_get or runtime_put from those
-	 * callbacks, as well as preventing triggering any access_ongoing
-	 * asserts.
-	 */
-	if (xe_pm_read_callback_task(xe) == current)
-		return;
-
-	xe_pm_runtime_get(xe);
-	ref = atomic_inc_return(&xe->mem_access.ref);
-
-	xe_assert(xe, ref != S32_MAX);
-
-}
-
-void xe_device_mem_access_put(struct xe_device *xe)
-{
-	int ref;
-
-	if (xe_pm_read_callback_task(xe) == current)
-		return;
-
-	ref = atomic_dec_return(&xe->mem_access.ref);
-	xe_pm_runtime_put(xe);
-
-	xe_assert(xe, ref >= 0);
-}
-
 void xe_device_snapshot_print(struct xe_device *xe, struct drm_printer *p)
 {
 	struct xe_gt *gt;
diff --git a/drivers/gpu/drm/xe/xe_device.h b/drivers/gpu/drm/xe/xe_device.h
index 050d4b6cdc65..2761ee741e7b 100644
--- a/drivers/gpu/drm/xe/xe_device.h
+++ b/drivers/gpu/drm/xe/xe_device.h
@@ -137,10 +137,6 @@ static inline struct xe_force_wake *gt_to_fw(struct xe_gt *gt)
 	return &gt->mmio.fw;
 }
 
-void xe_device_mem_access_get(struct xe_device *xe);
-bool xe_device_mem_access_get_if_ongoing(struct xe_device *xe);
-void xe_device_mem_access_put(struct xe_device *xe);
-
 void xe_device_assert_mem_access(struct xe_device *xe);
 
 static inline bool xe_device_in_fault_mode(struct xe_device *xe)
diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h
index 6914cab9191d..78817778234b 100644
--- a/drivers/gpu/drm/xe/xe_device_types.h
+++ b/drivers/gpu/drm/xe/xe_device_types.h
@@ -385,9 +385,6 @@ struct xe_device {
 	 * triggering additional actions when they occur.
 	 */
 	struct {
-		/** @mem_access.ref: ref count of memory accesses */
-		atomic_t ref;
-
 		/**
 		 * @mem_access.vram_userfault: Encapsulate vram_userfault
 		 * related stuff
-- 
2.43.0