From: Ilya Leoshkevich iii@linux.ibm.com
commit db16c1fe92d7ba7d39061faef897842baee2c887 upstream.
[backported for dependency only extra_paholeopt variable setup and usage, we don't want floats generated in 5.10]
pahole v1.21 supports the --btf_gen_floats flag, which makes it generate the information about the floating-point types [1].
Adjust link-vmlinux.sh to pass this flag to pahole in case it's supported, which is determined using a simple version check.
[1] https://lore.kernel.org/dwarves/YHRiXNX1JUF2Az0A@kernel.org/
Signed-off-by: Ilya Leoshkevich iii@linux.ibm.com Signed-off-by: Andrii Nakryiko andrii@kernel.org Acked-by: Andrii Nakryiko andrii@kernel.org Link: https://lore.kernel.org/bpf/20210413190043.21918-1-iii@linux.ibm.com Signed-off-by: Jiri Olsa jolsa@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- scripts/link-vmlinux.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -146,6 +146,7 @@ vmlinux_link() gen_btf() { local pahole_ver + local extra_paholeopt=
if ! [ -x "$(command -v ${PAHOLE})" ]; then echo >&2 "BTF: ${1}: pahole (${PAHOLE}) is not available" @@ -161,7 +162,7 @@ gen_btf() vmlinux_link ${1}
info "BTF" ${2} - LLVM_OBJCOPY=${OBJCOPY} ${PAHOLE} -J ${1} + LLVM_OBJCOPY=${OBJCOPY} ${PAHOLE} -J ${extra_paholeopt} ${1}
# Create ${2} which contains just .BTF section but no symbols. Add # SHF_ALLOC because .BTF will be part of the vmlinux image. --strip-all