drm/amdkfd: move kfd_flush_tlb_after_unmap into kfd_priv.h

To make kfd_flush_tlb_after_unmap visible in kfd_svm.c,
move it into kfd_priv.h. And change it to an inline function.
Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

@@ -1128,14 +1128,6 @@ static int kfd_ioctl_free_memory_of_gpu(struct file *filep,
 	return ret;
 }
 
-static bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev)
-{
-	return KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2) ||
-		(KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) &&
-		dev->adev->sdma.instance[0].fw_version >= 18) ||
-		KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 0);
-}
-
 static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
 					struct kfd_process *p, void *data)
 {

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

@@ -1328,6 +1328,14 @@ void kfd_signal_poison_consumed_event(struct kfd_dev *dev, u32 pasid);
 
 void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type);
 
+static inline bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev)
+{
+	return KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2) ||
+	       (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) &&
+	       dev->adev->sdma.instance[0].fw_version >= 18) ||
+	       KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 0);
+}
+
 bool kfd_is_locked(void);
 
 /* Compute profile */