add rcu_read_locked() to detect holding of rcu lock.
Signed-off-by: Chuang Xu <xuchuangxc...@bytedance.com>
---
include/qemu/rcu.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/qemu/rcu.h b/include/qemu/rcu.h
index b063c6fde8..42cbd0080f 100644
--- a/include/qemu/rcu.h
+++ b/include/qemu/rcu.h
@@ -119,6 +119,13 @@ static inline void rcu_read_unlock(void)
}
}
+static inline bool rcu_read_locked(void)
+{
+ struct rcu_reader_data *p_rcu_reader = get_ptr_rcu_reader();
+
+ return p_rcu_reader->depth > 0;
+}
+
extern void synchronize_rcu(void);
/*
--
2.20.1
