when run "make virtio" in linux/tools,
the error: unknown type name 'spinlock_t' occurs
Signed-off-by: Cai Huoqing <caihuoqing@xxxxxxxxx>
---
include/linux/vringh.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/vringh.h b/include/linux/vringh.h
index 84db7b8f912f..ff21c2643792 100644
--- a/include/linux/vringh.h
+++ b/include/linux/vringh.h
@@ -43,11 +43,13 @@ struct vringh {
/* The vring (note: it may contain user pointers!) */
struct vring vring;
+#if IS_REACHABLE(CONFIG_VHOST_IOTLB)
/* IOTLB for this vring */
struct vhost_iotlb *iotlb;
/* spinlock to synchronize IOTLB accesses */
spinlock_t *iotlb_lock;
+#endif
/* The function to call to notify the guest about added buffers */
void (*notify)(struct vringh *);
--
2.25.1
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