From: Martin KaFai Lau <kafai@fb.com>
Date: Wed, 8 Jan 2020 16:34:59 -0800
Subject: bpf: Add enum support to btf_ctx_access()
Patch-mainline: v5.6-rc1
Git-commit: 218b3f65f9081f5e1bffe6de5f0f4b22c935410b
References: bsc#1177028
It allows bpf prog (e.g. tracing) to attach
to a kernel function that takes enum argument.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200109003459.3855366-1-kafai@fb.com
Acked-by: Gary Lin <glin@suse.com>
---
kernel/bpf/btf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -3677,7 +3677,7 @@ bool btf_ctx_access(int off, int size, e
/* skip modifiers */
while (btf_type_is_modifier(t))
t = btf_type_by_id(btf, t->type);
- if (btf_type_is_int(t))
+ if (btf_type_is_int(t) || btf_type_is_enum(t))
/* accessing a scalar */
return true;
if (!btf_type_is_ptr(t)) {