1 menu "GCOV-based kernel profiling"
4 bool "Enable gcov-based kernel profiling"
10 This option enables gcov-based code profiling (e.g. for code coverage
15 Additionally specify CONFIG_GCOV_PROFILE_ALL=y to get profiling data
16 for the entire kernel. To enable profiling for specific files or
17 directories, add a line similar to the following to the respective
20 For a single file (e.g. main.o):
21 GCOV_PROFILE_main.o := y
23 For all files in one directory:
26 To exclude files from being profiled even when CONFIG_GCOV_PROFILE_ALL
29 GCOV_PROFILE_main.o := n
33 Note that the debugfs filesystem has to be mounted to access
36 config GCOV_PROFILE_ALL
37 bool "Profile entire Kernel"
38 depends on GCOV_KERNEL
39 depends on SUPERH || S390 || X86 || (PPC && EXPERIMENTAL) || MICROBLAZE
42 This options activates profiling for the entire kernel.
46 Note that a kernel compiled with profiling flags will be significantly
47 larger and run slower. Also be sure to exclude files from profiling
48 which are not linked to the kernel image to prevent linker errors.