install
calltree:
download from http://linux.softpedia.com/progDownload/calltree-Download-971.html
for linux, Check READ.linux to compile and install, very simple!!!
then copy calltree/OBJ/i686-linux-cc/calltree to /usr/bin
granphviz:
i used "sudo yum insall graphviz* " to install.
But when install, it show some lib miss. The resolved way is update the repo. BTW, my system is CentOs. you can check
http://mirrors.163.com/.help/centos.html.
Use them
e.g. I want to know the "start_kernel" call tree, Then I can do:
calltree -b -dot lf=start_kernel KERNEL_DIR/init/*.c > ~/start_kernel.dot
dot -T png ~/start_kernel.dot -o ~/start_kernel.png
# the usage of dot is "dot -T picture-format input-doc-file -o outputfile"
Also you can use:
calltree -b lf=start_kernel KERNEL_DIR/init/*.c > ~/start_kernel.dot
to generate a txt call tree.
It's very usefull!!! Because our brain stack is not so big : (, so use the tool!!!