Chuang Xu <xuchuangxc...@bytedance.com> writes:
> 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)
We use the locked suffix to indicate functions that should be called
with a lock held. Perhaps renaming this to rcu_read_is_locked() would
make the intent of the function clearer?
> +{
> + struct rcu_reader_data *p_rcu_reader = get_ptr_rcu_reader();
> +
> + return p_rcu_reader->depth > 0;
> +}
> +
> extern void synchronize_rcu(void);
>
> /*
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
