I am building my own kernel with following options set.
CONFIG_FRAME_POINTER=y
CONFIG_DEBUG_INFO=y
So I assume that the generated vmlinux file will have all the required debuginfo.
I installed that kernel in a machine and put the vmlinux file under /boot/. However, when I tried to do a perf annotate it does not show the source code along side the assembly code. It only shows the assembly code and c function names not the entire source code(I have tried toggling "s" during annotate).
Here are my perf commands.
#perf record -g -a -e cycles:k sleep 5
#perf report -f -g -s symbol
#perf annotate -f -s <kernel function name> > annotate_<kernel_function>.txt
What am I missing here ? Do I need to install debuginfo packages separately ?
Regards, Atish
The binrpm-pkg target to build kernel rpm does not generate debuginfo because it disabled generation of debuginfo packages, you can try do this, open scripts/package/mkspec in your kernel source tree, and search for a line echo "%define debug_package %{nil}", comment or remove this line, and try to build again.
The reason is that this line explicitly tell rpmbuild that skip debuginfo packages.
See the link: