perfstat on RHEL 5

I got some build issue which is sound “SYMPTOMS: perfstat not installed” . I try to install by running command “yum install perf” but nothing happen(no package perf available). I founded on superuser forum page mention that perf only available on the kernel of 2.6.31 (RHEL6). No wonder this machine cant install because its kernel was 2.6.18-398.el5. Is that any possibilities to manually install that kind of monitoring tools on such of kernel?