gcov tool data - for a specific kernel module

Hi All, I’m trying to use the ‘gcov’ tool for an out-of-tree kernel module. For this, I configured the kernel with “CONFIG_DEBUGFS=y” , “CONFIG_GCOV_KERNEL=y” and mounted the debugfs. I noticed that “file.gcno” file generated by gcc when compiling with option -ftest-coverage. I’d like to know how to generate “file.gcda”? I’ve few test utilities(ELF 64-bit LSB executables and python test scripts) to test our driver. I’d like to understand how to get the code coverage data for my driver on running my test scripts, can someone please clarify me on this? -- Thanks, Sekhar