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linux
btf: Add BTF_ID_LIST_SINGLE macro
Add a convenience macro that allows defining a BTF ID list with
a single item. This lets us cut down on repetitive macros.
Suggested-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200921121227.255763-4-lmb@cloudflare.com
authored by
Lorenz Bauer
and committed by
Alexei Starovoitov
27774b70
0d004c02
+16
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include/linux/btf_ids.h
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include/linux/btf_ids.h
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#define BTF_ID_LIST_GLOBAL(name) \
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__BTF_ID_LIST(name, globl)
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/* The BTF_ID_LIST_SINGLE macro defines a BTF_ID_LIST with
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* a single entry.
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*/
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#define BTF_ID_LIST_SINGLE(name, prefix, typename) \
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BTF_ID_LIST(name) \
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BTF_ID(prefix, typename)
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/*
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* The BTF_ID_UNUSED macro defines 4 zero bytes.
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* It's used when we want to define 'unused' entry
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#define BTF_ID(prefix, name)
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#define BTF_ID_UNUSED
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#define BTF_ID_LIST_GLOBAL(name) u32 name[1];
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#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 name[1];
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#define BTF_SET_START(name) static struct btf_id_set name = { 0 };
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#define BTF_SET_START_GLOBAL(name) static struct btf_id_set name = { 0 };
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#define BTF_SET_END(name)
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tools/include/linux/btf_ids.h
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tools/include/linux/btf_ids.h
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#define BTF_ID_LIST_GLOBAL(name) \
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__BTF_ID_LIST(name, globl)
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/* The BTF_ID_LIST_SINGLE macro defines a BTF_ID_LIST with
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* a single entry.
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*/
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#define BTF_ID_LIST_SINGLE(name, prefix, typename) \
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BTF_ID_LIST(name) \
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BTF_ID(prefix, typename)
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/*
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* The BTF_ID_UNUSED macro defines 4 zero bytes.
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* It's used when we want to define 'unused' entry
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#define BTF_ID(prefix, name)
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#define BTF_ID_UNUSED
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#define BTF_ID_LIST_GLOBAL(name) u32 name[1];
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#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 name[1];
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#define BTF_SET_START(name) static struct btf_id_set name = { 0 };
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#define BTF_SET_START_GLOBAL(name) static struct btf_id_set name = { 0 };
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#define BTF_SET_END(name)