diff --git a/HOWTOHELP b/HOWTOHELP
index 794d18af7..80ee4aa69 100644
--- a/HOWTOHELP
+++ b/HOWTOHELP
@@ -247,6 +247,8 @@ request_key(2)          (new in kernel 2.6.10)
 
 restart_syscall(2)      (new in kernel 2.6)
 
+getcpu(2)               new in kernel 2.6.16; glibc support since
+                        version 2.6 with wrapper sched_getcpu(3)
 kexec_load(2)           (new in kernel 2.6.13)
 
 migrate_pages(2)        (new in kernel 2.6.16)
@@ -272,6 +274,10 @@ signalfd(2)		Likely to appear around 2.6.23 (or pollfs?)
 timerfd(2)		Likely to appear around 2.6.22 (or pollfs?)
     			See http://lwn.net/Articles/225714/
 
+utimesnsat(2)		Kernel 2.6.22?
+futimesns(3)		Supported in glibc since version 2.6,
+                        layered on utimesnsat(2)
+
 /sys file system
 ----------------
 
@@ -305,8 +311,9 @@ done
 
 clock_nanosleep(3)
 crypt_r(3)    (To be added to crypt.3)
-dlinfo(3)     (Solaris and FreeBSD have a similar function.)
-dladdr1(3)
+dlinfo(3)     Since glibc 2.3.3
+              (Solaris and FreeBSD have a similar function.)
+dladdr1(3)    Since glibc 2.3.3
 dlmopen(3)    (Solaris has a similar function; since glibc 2.3.4;
                probably to be documented in dlopen.3)
 etext, edata, end (variables)
@@ -323,7 +330,7 @@ mcheck(3), mprobe(3)
 memmem(3)     (GNU extension)
 readdir_r(3)  (probably as additional text in readdir.3)
 open_wmemstream(3)   (since glibc 2.4)
-posix_madvise(3)
+posix_madvise(3)     (glibc support since version 2.2.)
 sigstack(3)
 sigwait(3)
 strftime_l(3) (since glibc 2.3)