From: Matthew Brost <matthew.br...@intel.com>
Abstract drm_gpusvm_in_notifier_lock/unlock with helpers. Intended usage
is a client side 2nd pass of a MMU notifier.
Signed-off-by: Matthew Brost <matthew.br...@intel.com>
---
include/drm/drm_gpusvm.h | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/include/drm/drm_gpusvm.h b/include/drm/drm_gpusvm.h
index 8b5e159857fc..4bdbe10685cf 100644
--- a/include/drm/drm_gpusvm.h
+++ b/include/drm/drm_gpusvm.h
@@ -313,7 +313,7 @@ void drm_gpusvm_range_set_unmapped(struct drm_gpusvm_range
*range,
#endif
/**
- * drm_gpusvm_notifier_lock() - Lock GPU SVM notifier
+ * drm_gpusvm_notifier_lock() - Lock GPU SVM notifier, client side
* @gpusvm__: Pointer to the GPU SVM structure.
*
* Abstract client usage GPU SVM notifier lock, take lock
@@ -322,7 +322,7 @@ void drm_gpusvm_range_set_unmapped(struct drm_gpusvm_range
*range,
down_read(&(gpusvm__)->notifier_lock)
/**
- * drm_gpusvm_notifier_unlock() - Unlock GPU SVM notifier
+ * drm_gpusvm_notifier_unlock() - Unlock GPU SVM notifier, client side
* @gpusvm__: Pointer to the GPU SVM structure.
*
* Abstract client usage GPU SVM notifier lock, drop lock
@@ -330,6 +330,24 @@ void drm_gpusvm_range_set_unmapped(struct drm_gpusvm_range
*range,
#define drm_gpusvm_notifier_unlock(gpusvm__) \
up_read(&(gpusvm__)->notifier_lock)
+/**
+ * drm_gpusvm_in_notifier_lock() - Lock GPU SVM notifier, in notifier
+ * @gpusvm__: Pointer to the GPU SVM structure.
+ *
+ * Abstract in notifier (2nd pass) usage GPU SVM notifier lock, take lock
+ */
+#define drm_gpusvm_in_notifier_lock(gpusvm__) \
+ down_write(&(gpusvm__)->notifier_lock)
+
+/**
+ * drm_gpusvm_in_notifier_unlock() - Unlock GPU SVM notifier, in notifier
+ * @gpusvm__: Pointer to the GPU SVM structure.
+ *
+ * Abstract in notifier (2nd pass) GPU SVM notifier lock, drop lock
+ */
+#define drm_gpusvm_in_notifier_unlock(gpusvm__) \
+ up_write(&(gpusvm__)->notifier_lock)
+
/**
* drm_gpusvm_range_start() - GPU SVM range start address
* @range: Pointer to the GPU SVM range
--
2.50.1
