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[bpf-next,v3,03/11] bpf: Add enum support to btf_ctx_access()

Message ID 20191231062044.281063-1-kafai@fb.com
State Changes Requested
Delegated to: BPF Maintainers
Headers show
Series Introduce BPF STRUCT_OPS | expand

Commit Message

Martin KaFai Lau Dec. 31, 2019, 6:20 a.m. UTC 
It allows bpf prog (e.g. tracing) to attach
to a kernel function that takes enum argument.

Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
---
 kernel/bpf/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 497ecf62d79d..6a5ccb748a72 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -3677,7 +3677,7 @@  bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 	/* 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)) {