Commit 218b3f65 authored Jan 08, 2020 by Martin KaFai Lau Committed by Alexei Starovoitov Jan 09, 2020

bpf: Add enum support to btf_ctx_access()



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

parent 275517ff

kernel/bpf/btf.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)) {

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