diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6c84d83b96f2..6abe4b8d817b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2006-11-29  Jie Zhang  <jie.zhang@analog.com>
+
+	* doc/tm.texi (NO_PROFILE_COUNTERS): Document more accurately.
+
 2006-11-29  Jim Tison  <jtison@us.ibm.com>
 
 	* gthr-tpf.h (__GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION,
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index cc448bcc687a..16102f7e86a1 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -4535,10 +4535,11 @@ not support profiling.
 @end defmac
 
 @defmac NO_PROFILE_COUNTERS
-Define this macro if the @code{mcount} subroutine on your system does
-not need a counter variable allocated for each function.  This is true
-for almost all modern implementations.  If you define this macro, you
-must not use the @var{labelno} argument to @code{FUNCTION_PROFILER}.
+Define this macro to be an expression with a nonzero value if the
+@code{mcount} subroutine on your system does not need a counter variable
+allocated for each function.  This is true for almost all modern
+implementations.  If you define this macro, you must not use the
+@var{labelno} argument to @code{FUNCTION_PROFILER}.
 @end defmac
 
 @defmac PROFILE_BEFORE_PROLOGUE