X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fthreads%2Fsynch.h;h=a19e88b181dff1208839ff890154aa69b299ce91;hb=19becec31c5704572a3575336c57364d72fd572b;hp=9e464e3876400f60fafbc44a105f859ffd4b6938;hpb=6d19139b337fcb7c9b31e5b6724e6ae19499e4c5;p=pintos-anon

diff --git a/src/threads/synch.h b/src/threads/synch.h
index 9e464e3..a19e88b 100644
--- a/src/threads/synch.h
+++ b/src/threads/synch.h
@@ -44,7 +44,8 @@ void cond_broadcast (struct condition *, struct lock *);
 /* Optimization barrier.
 
    The compiler will not reorder operations across an
-   optimization barrier. */
+   optimization barrier.  See "Optimization Barriers" in the
+   reference guide for more information.*/
 #define barrier() asm volatile ("" : : : "memory")
 
 #endif /* threads/synch.h */