kbuild: handle old pahole more gracefully when generating BTF
authorAndrii Nakryiko <andriin@fb.com>
Mon, 15 Apr 2019 21:58:39 +0000 (14:58 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Tue, 16 Apr 2019 07:47:50 +0000 (09:47 +0200)
commit68e5ab1fc8bd9c17ed94ac172ffe0b9b7e85a59a
tree7feb292fb83e6691bd4eac74a285a20370e2121e
parentc342dc109aa5a4f0bb36335cb441aaafc98b98ef
kbuild: handle old pahole more gracefully when generating BTF

When CONFIG_DEBUG_INFO_BTF is enabled but available version of pahole is too
old to support BTF generation, build script is supposed to emit warning and
proceed with the build. Due to using exit instead of return from BASH function,
existing handling code prematurely exits exit code 0, not completing some of
the build steps. This patch fixes issue by correctly returning just from
gen_btf() function only.

Fixes: e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux")
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
scripts/link-vmlinux.sh