[Kernel] Add nested mutex feature

1 files changed, 1 insertions, 0 deletions

diff --git a/include/rtthread.h b/include/rtthread.h
index c55720b7d1..893b24ea1b 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -368,6 +368,7 @@ rt_err_t rt_mutex_detach(rt_mutex_t mutex);
 rt_mutex_t rt_mutex_create(const char *name, rt_uint8_t flag);
 rt_err_t rt_mutex_delete(rt_mutex_t mutex);
 #endif
+void rt_mutex_drop_thread(rt_mutex_t mutex, rt_thread_t thread);
 
 rt_err_t rt_mutex_take(rt_mutex_t mutex, rt_int32_t timeout);
 rt_err_t rt_mutex_trytake(rt_mutex_t mutex);