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tools/bpf: Sync kernel btf.h header

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The kernel uapi btf.h is synced to the tools directory.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Martin KaFai Lau 2018-11-19 15:29:09 -08:00 committed by Alexei Starovoitov
parent 2667a2626f
commit 781e775e29
1 changed files with 15 additions and 3 deletions
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18
tools/include/uapi/linux/btf.h
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@ -40,7 +40,8 @@ struct btf_type {
/* "size" is used by INT, ENUM, STRUCT and UNION. /* "size" is used by INT, ENUM, STRUCT and UNION.
* "size" tells the size of the type it is describing. * "size" tells the size of the type it is describing.
* *
* "type" is used by PTR, TYPEDEF, VOLATILE, CONST and RESTRICT. * "type" is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT,
* FUNC and FUNC_PROTO.
* "type" is a type_id referring to another type. * "type" is a type_id referring to another type.
*/ */
union { union {
@ -64,8 +65,10 @@ struct btf_type {
#define BTF_KIND_VOLATILE 9 /* Volatile */ #define BTF_KIND_VOLATILE 9 /* Volatile */
#define BTF_KIND_CONST 10 /* Const */ #define BTF_KIND_CONST 10 /* Const */
#define BTF_KIND_RESTRICT 11 /* Restrict */ #define BTF_KIND_RESTRICT 11 /* Restrict */
#define BTF_KIND_MAX 11 #define BTF_KIND_FUNC 12 /* Function */
#define NR_BTF_KINDS 12 #define BTF_KIND_FUNC_PROTO 13 /* Function Proto */
#define BTF_KIND_MAX 13
#define NR_BTF_KINDS 14
/* For some specific BTF_KIND, "struct btf_type" is immediately /* For some specific BTF_KIND, "struct btf_type" is immediately
* followed by extra data. * followed by extra data.
@ -110,4 +113,13 @@ struct btf_member {
__u32 offset; /* offset in bits */ __u32 offset; /* offset in bits */
}; };
/* BTF_KIND_FUNC_PROTO is followed by multiple "struct btf_param".
* The exact number of btf_param is stored in the vlen (of the
* info in "struct btf_type").
*/
struct btf_param {
__u32 name_off;
__u32 type;
};
#endif /* _UAPI__LINUX_BTF_H__ */ #endif /* _UAPI__LINUX_BTF_H__ */