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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2019-08-20 14:29:39 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-08-21 15:57:17 +0300 |
| commit | fdf37037664041cfdbcab6cf54ddb2c1c219034b (patch) | |
| tree | 6ea045f56ddafe44f1fcc99572b75c7b1195e56e /scripts | |
| parent | bb4b5c08a8e0f854a313184498b22fa37dd087db (diff) | |
| download | linux-fdf37037664041cfdbcab6cf54ddb2c1c219034b.tar.xz | |
btf: do not use CONFIG_OUTPUT_FORMAT
Building s390 kernel with CONFIG_DEBUG_INFO_BTF fails, because
CONFIG_OUTPUT_FORMAT is not defined. As a matter of fact, this variable
appears to be x86-only, so other arches might be affected as well.
Fix by obtaining this value from objdump output, just like it's already
done for bin_arch. The exact objdump invocation is "inspired" by
arch/powerpc/boot/wrapper.
Also, use LANG=C for the existing bin_arch objdump invocation to avoid
potential build issues on systems with non-English locale.
Fixes: 341dfcf8d78e ("btf: expose BTF info through sysfs")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/link-vmlinux.sh | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index c31193340108..0d8f41db8cd6 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -115,10 +115,12 @@ gen_btf() LLVM_OBJCOPY=${OBJCOPY} ${PAHOLE} -J ${1} # dump .BTF section into raw binary file to link with final vmlinux - bin_arch=$(${OBJDUMP} -f ${1} | grep architecture | \ + bin_arch=$(LANG=C ${OBJDUMP} -f ${1} | grep architecture | \ cut -d, -f1 | cut -d' ' -f2) + bin_format=$(LANG=C ${OBJDUMP} -f ${1} | grep 'file format' | \ + awk '{print $4}') ${OBJCOPY} --dump-section .BTF=.btf.vmlinux.bin ${1} 2>/dev/null - ${OBJCOPY} -I binary -O ${CONFIG_OUTPUT_FORMAT} -B ${bin_arch} \ + ${OBJCOPY} -I binary -O ${bin_format} -B ${bin_arch} \ --rename-section .data=.BTF .btf.vmlinux.bin ${2} } |