jlaitine commented on code in PR #16030:
URL: https://github.com/apache/nuttx/pull/16030#discussion_r2008087983


##########
include/nuttx/semaphore.h:
##########
@@ -59,6 +59,54 @@
      {(c), (f), SEM_WAITLIST_INITIALIZER}
 #endif /* CONFIG_PRIORITY_INHERITANCE */
 
+/* Fast mutex lock/unlock path */
+
+#ifndef CONFIG_LIBC_ARCH_ATOMIC

Review Comment:
   With LIBC_ARCH_ATOMIC the whole atomic optimization makes no sense and makes 
it slower...



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