When LATENCYTOP is enabled and ARCH_WANT_FRAME_POINTERS is disabled, Kbuild gives the following warning:
WARNING: unmet direct dependencies detected for FRAME_POINTER Depends on [n]: DEBUG_KERNEL [=y] && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS [=n] || MCOUNT [=n] Selected by [y]: - LATENCYTOP [=y] && DEBUG_KERNEL [=y] && STACKTRACE_SUPPORT [=y] && PROC_FS [=y] && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 This is because LATENCYTOP selects FRAME_POINTER, without selecting or depending on ARCH_WANT_FRAME_POINTERS, despite FRAME_POINTER depending on ARCH_WANT_FRAME_POINTERS. Signed-off-by: Julian Braha <julianbr...@gmail.com> --- lib/Kconfig.debug | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 5a698fc34d56..59e78f1b3821 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1675,6 +1675,7 @@ config LATENCYTOP depends on DEBUG_KERNEL depends on STACKTRACE_SUPPORT depends on PROC_FS + select ARCH_WANT_FRAME_POINTERS if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 select KALLSYMS select KALLSYMS_ALL -- 2.25.1