From 9741e07ece7c247dd65e1aa01e16b683f01c05a8 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 29 Oct 2021 14:57:29 +0200 Subject: kbuild: Unify options for BTF generation for vmlinux and modules Using new PAHOLE_FLAGS variable to pass extra arguments to pahole for both vmlinux and modules BTF data generation. Adding new scripts/pahole-flags.sh script that detect and prints pahole options. [ fixed issues found by kernel test robot ] Signed-off-by: Jiri Olsa Signed-off-by: Andrii Nakryiko Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211029125729.70002-1-jolsa@kernel.org --- scripts/pahole-flags.sh | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100755 scripts/pahole-flags.sh (limited to 'scripts/pahole-flags.sh') diff --git a/scripts/pahole-flags.sh b/scripts/pahole-flags.sh new file mode 100755 index 000000000000..2b99fc77019c --- /dev/null +++ b/scripts/pahole-flags.sh @@ -0,0 +1,20 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +extra_paholeopt= + +if ! [ -x "$(command -v ${PAHOLE})" ]; then + return +fi + +pahole_ver=$(${PAHOLE} --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/') + +if [ "${pahole_ver}" -ge "118" ] && [ "${pahole_ver}" -le "121" ]; then + # pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars + extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_vars" +fi +if [ "${pahole_ver}" -ge "121" ]; then + extra_paholeopt="${extra_paholeopt} --btf_gen_floats" +fi + +echo ${extra_paholeopt} -- cgit v1.2.3