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authorIlya Leoshkevich <iii@linux.ibm.com>2019-08-20 13:29:39 +0200
committerDaniel Borkmann <daniel@iogearbox.net>2019-08-21 14:57:17 +0200
commitfdf37037664041cfdbcab6cf54ddb2c1c219034b (patch)
tree6ea045f56ddafe44f1fcc99572b75c7b1195e56e /scripts
parentbb4b5c08a8e0f854a313184498b22fa37dd087db (diff)
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-xscripts/link-vmlinux.sh6
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}
}