diff --git a/library/std/src/sys/sync/rwlock/mod.rs b/library/std/src/sys/sync/rwlock/mod.rs
index ab5715bf2de33..8603fca2da5b5 100644
--- a/library/std/src/sys/sync/rwlock/mod.rs
+++ b/library/std/src/sys/sync/rwlock/mod.rs
@@ -19,6 +19,7 @@ cfg_select! {
         all(target_os = "windows", target_vendor = "win7"),
         all(target_vendor = "fortanix", target_env = "sgx"),
         target_os = "xous",
+        target_os = "teeos",
     ) => {
         mod queue;
         pub use queue::RwLock;
@@ -27,10 +28,6 @@ cfg_select! {
         mod solid;
         pub use solid::RwLock;
     }
-    target_os = "teeos" => {
-        mod teeos;
-        pub use teeos::RwLock;
-    }
     _ => {
         mod no_threads;
         pub use no_threads::RwLock;
diff --git a/library/std/src/sys/sync/rwlock/teeos.rs b/library/std/src/sys/sync/rwlock/teeos.rs
deleted file mode 100644
index 4a71a3abc2729..0000000000000
--- a/library/std/src/sys/sync/rwlock/teeos.rs
+++ /dev/null
@@ -1,50 +0,0 @@
-use crate::sys::sync::mutex::Mutex;
-
-/// we do not supported rwlock, so use mutex to simulate rwlock.
-/// it's useful because so many code in std will use rwlock.
-pub struct RwLock {
-    inner: Mutex,
-}
-
-impl RwLock {
-    #[inline]
-    pub const fn new() -> RwLock {
-        RwLock { inner: Mutex::new() }
-    }
-
-    #[inline]
-    pub fn read(&self) {
-        self.inner.lock()
-    }
-
-    #[inline]
-    pub fn try_read(&self) -> bool {
-        self.inner.try_lock()
-    }
-
-    #[inline]
-    pub fn write(&self) {
-        self.inner.lock()
-    }
-
-    #[inline]
-    pub unsafe fn try_write(&self) -> bool {
-        self.inner.try_lock()
-    }
-
-    #[inline]
-    pub unsafe fn read_unlock(&self) {
-        unsafe { self.inner.unlock() };
-    }
-
-    #[inline]
-    pub unsafe fn write_unlock(&self) {
-        unsafe { self.inner.unlock() };
-    }
-
-    #[inline]
-    pub unsafe fn downgrade(&self) {
-        // Since there is no difference between read-locked and write-locked on this platform, this
-        // function is simply a no-op as only 1 reader can read: the original writer.
-    }
-}
diff --git a/library/std/src/sys/sync/thread_parking/mod.rs b/library/std/src/sys/sync/thread_parking/mod.rs
index e8a9dc884f816..74b5b72b19a75 100644
--- a/library/std/src/sys/sync/thread_parking/mod.rs
+++ b/library/std/src/sys/sync/thread_parking/mod.rs
@@ -35,7 +35,10 @@ cfg_select! {
         mod xous;
         pub use xous::Parker;
     }
-    target_family = "unix" => {
+    any(
+        target_family = "unix",
+        target_os = "teeos",
+    ) => {
         mod pthread;
         pub use pthread::Parker;
     }
diff --git a/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md b/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md
index be11d0cdd1037..6e7eeb82e4bf4 100644
--- a/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md
+++ b/src/doc/rustc/src/platform-support/aarch64-unknown-teeos.md
@@ -5,7 +5,7 @@
 Target for the TEEOS operating system.
 
 TEEOS is a mini os run in TrustZone, for trusted/security apps. The kernel of TEEOS is HongMeng/ChCore micro kernel. The libc for TEEOS is a part of musl.
-It's very small that there is no RwLock, no network, no stdin, and no file system for apps in TEEOS.
+It's very small that there is no network, no stdin, and no file system for apps in TEEOS.
 
 Some abbreviation: