Hi Ingo, I'm seeing this in 2.6.31-rc6: ghaskins@dev:~/sandbox/git/fabric/linux-2.6/tools/perf/Documentation> make SUBDIR ../ make[1]: `PERF-VERSION-FILE' is up to date. ASCIIDOC perf-examples.html ERROR: perf-examples.txt: line 1: manpage document title is mandatory FAILED: perf-examples.txt: line 8: illegal style name: From an e-mail by Ingo Molnar make: *** [perf-examples.html] Error 1 It could very well be pilot error. Any ideas? Kind Regards, -Greg