diff --git a/man2/clock_getres.2 b/man2/clock_getres.2
index 9e872f62f..ae7af1b6c 100644
--- a/man2/clock_getres.2
+++ b/man2/clock_getres.2
@@ -221,12 +221,13 @@ are available.
 (See also
 .BR sysconf (3).)
 .SH NOTES
-.SS Note for SMP systems
-The
+.SS Historical note for SMP systems
+Before Linux added kernel support for
 .B CLOCK_PROCESS_CPUTIME_ID
 and
-.B CLOCK_THREAD_CPUTIME_ID
-clocks are realized on many platforms using timers from the CPUs
+.BR CLOCK_THREAD_CPUTIME_ID ,
+glibc implemented these clocks on many platforms using timer
+registers from the CPUs
 (TSC on i386, AR.ITC on Itanium).
 These registers may differ between CPUs and as a consequence
 these clocks may return
@@ -252,6 +253,15 @@ Glibc contains no provisions to deal with these offsets (unlike the Linux
 Kernel).
 Typically these offsets are small and therefore the effects may be
 negligible in most cases.
+
+Since glibc 2.4,
+the wrapper functions for the system calls described in this page avoid
+the abovementioned problems by employing the kernel implementation of
+.B CLOCK_PROCESS_CPUTIME_ID
+and
+.BR CLOCK_THREAD_CPUTIME_ID ,
+on systems that provide such an implementation
+(i.e., Linux 2.6.12 and later).
 .SH BUGS
 According to POSIX.1-2001, a process with "appropriate privileges" may set the
 .B CLOCK_PROCESS_CPUTIME_ID