On 11/9/20 6:19 PM, Andrii Nakryiko wrote: > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index d7a7bc3b6098..1e78faaf20a5 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -274,6 +274,15 @@ config DEBUG_INFO_BTF > Turning this on expects presence of pahole tool, which will convert > DWARF type info into equivalent deduplicated BTF type info. > > +config PAHOLE_HAS_SPLIT_BTF > + def_bool $(success, test `$(PAHOLE) --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/'` -ge "119") > + > +config DEBUG_INFO_BTF_MODULES > + def_bool y > + depends on DEBUG_INFO_BTF && MODULES && PAHOLE_HAS_SPLIT_BTF > + help > + Generate compact split BTF type information for kernel modules. > + > config GDB_SCRIPTS > bool "Provide GDB scripts for kernel debugging" > help Thank you for adding a config option for this feature vs bumping the required pahole version in scripts/link-vmlinux.sh. This is a much more friendly way of handling kernel features that require support from build tools.
