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UPSTREAM: bpf: Add enum support to btf_ctx_access()

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It allows bpf prog (e.g. tracing) to attach
to a kernel function that takes enum argument.

Change-Id: I5415fbd084e745291d444c159e573f030e65215e
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
This commit is contained in:
Martin KaFai Lau 2020-01-08 16:34:59 -08:00 • committed by basamaryan
commit f88cda0754
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1 changed files with 1 additions and 1 deletions
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kernel/bpf/btf.c
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@ -3683,7 +3683,7 @@ 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)) {