[PATCH v2] libbpf: Support raw btf placed in the default path

From: Tao Chen
Date: Mon Sep 12 2022 - 12:43:21 EST


Now only elf btf can be placed in the default path(/boot), raw
btf should also can be there.

Signed-off-by: Tao Chen <chentao.kernel@xxxxxxxxxxxxxxxxx>
---
v2->v1: Remove the locations[i].raw_btf check
---
tools/lib/bpf/btf.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index bb1e06e..46ec244 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -4657,11 +4657,10 @@ struct btf *btf__load_vmlinux_btf(void)
{
struct {
const char *path_fmt;
- bool raw_btf;
} locations[] = {
/* try canonical vmlinux BTF through sysfs first */
- { "/sys/kernel/btf/vmlinux", true /* raw BTF */ },
- /* fall back to trying to find vmlinux ELF on disk otherwise */
+ { "/sys/kernel/btf/vmlinux" },
+ /* fall back to trying to find vmlinux on disk otherwise */
{ "/boot/vmlinux-%1$s" },
{ "/lib/modules/%1$s/vmlinux-%1$s" },
{ "/lib/modules/%1$s/build/vmlinux" },
@@ -4683,10 +4682,7 @@ struct btf *btf__load_vmlinux_btf(void)
if (access(path, R_OK))
continue;

- if (locations[i].raw_btf)
- btf = btf__parse_raw(path);
- else
- btf = btf__parse_elf(path, NULL);
+ btf = btf__parse(path, NULL);
err = libbpf_get_error(btf);
pr_debug("loading kernel BTF '%s': %d\n", path, err);
if (err)
--
2.2.1