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authorJiri Olsa <jolsa@redhat.com>2021-10-29 15:57:29 +0300
committerAndrii Nakryiko <andrii@kernel.org>2021-11-02 04:09:58 +0300
commit9741e07ece7c247dd65e1aa01e16b683f01c05a8 (patch)
treef8124044849c3341e81ed559ec03e4fa2dbc94e9 /scripts/link-vmlinux.sh
parent0869e5078afbd1b22c20832b391b2d85291bc0a8 (diff)
downloadlinux-9741e07ece7c247dd65e1aa01e16b683f01c05a8.tar.xz
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 <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20211029125729.70002-1-jolsa@kernel.org
Diffstat (limited to 'scripts/link-vmlinux.sh')
-rwxr-xr-xscripts/link-vmlinux.sh11
1 files changed, 1 insertions, 10 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index d74cee5c4326..3ea7cece7c97 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -205,7 +205,6 @@ 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"
@@ -220,16 +219,8 @@ gen_btf()
vmlinux_link ${1}
- if [ "${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
-
info "BTF" ${2}
- LLVM_OBJCOPY="${OBJCOPY}" ${PAHOLE} -J ${extra_paholeopt} ${1}
+ LLVM_OBJCOPY="${OBJCOPY}" ${PAHOLE} -J ${PAHOLE_FLAGS} ${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