http://www.gnu.org/software/global/global.html
run:
1. go to directory of source code
2. gtags
3. htags ./codeTrace/
the generated html is in ./codeTrace/
core_2.6.5-7.244-smp_x86_64
core_2.6.16.21-0.8-smp_i686 & core_2.6.16.21-0.8-smp_x86_64
suse linux enterprise server 10 sp1
core_2.6.16.46-0.12-smp_x86_64
suse linux enterprise server 10 sp2
core_2.6.16.60-0.21-default_i686 ,core_2.6.16.60-0.21-default_x86_64