1 files changed, 6 insertions, 1 deletions
diff --git a/absl/base/internal/low_level_scheduling.h b/absl/base/internal/low_level_scheduling.h
index 961cc981..31261298 100644
--- a/absl/base/internal/low_level_scheduling.h
+++ b/absl/base/internal/low_level_scheduling.h
@@ -29,6 +29,9 @@ extern "C" void __google_enable_rescheduling(bool disable_result);
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN
+class CondVar;
+class Mutex;
+
 namespace base_internal {
 
 class SchedulingHelper;  // To allow use of SchedulingGuard.
@@ -76,7 +79,9 @@ class SchedulingGuard {
     bool disabled;
   };
 
-  // Access to SchedulingGuard is explicitly white-listed.
+  // Access to SchedulingGuard is explicitly permitted.
+  friend class absl::CondVar;
+  friend class absl::Mutex;
   friend class SchedulingHelper;
   friend class SpinLock;