diff options
Diffstat (limited to 'include/uapi/linux/btf.h')
| -rw-r--r-- | include/uapi/linux/btf.h | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/include/uapi/linux/btf.h b/include/uapi/linux/btf.h index 638615ebddc2..618167cab4e6 100644 --- a/include/uapi/linux/btf.h +++ b/include/uapi/linux/btf.h @@ -33,20 +33,22 @@ struct btf_header { __u32 layout_len; /* length of layout section */ }; -/* Max # of type identifier */ -#define BTF_MAX_TYPE 0x000fffff -/* Max offset into the string section */ -#define BTF_MAX_NAME_OFFSET 0x00ffffff -/* Max # of struct/union/enum members or func args */ -#define BTF_MAX_VLEN 0xffff +enum btf_max { + /* Max possible kind */ + BTF_MAX_KIND = 0x0000007f, + /* Max # of type identifier */ + BTF_MAX_TYPE = 0x000fffff, + /* Max offset into the string section */ + BTF_MAX_NAME_OFFSET = 0x00ffffff, + /* Max # of struct/union/enum members or func args */ + BTF_MAX_VLEN = 0x00ffffff, +}; struct btf_type { __u32 name_off; /* "info" bits arrangement - * bits 0-15: vlen (e.g. # of struct's members) - * bits 16-23: unused - * bits 24-28: kind (e.g. int, ptr, array...etc) - * bits 29-30: unused + * bits 0-23: vlen (e.g. # of struct's members) + * bits 24-30: kind (e.g. int, ptr, array...etc) * bit 31: kind_flag, currently used by * struct, union, enum, fwd, enum64, * decl_tag and type_tag @@ -65,8 +67,8 @@ struct btf_type { }; }; -#define BTF_INFO_KIND(info) (((info) >> 24) & 0x1f) -#define BTF_INFO_VLEN(info) ((info) & 0xffff) +#define BTF_INFO_KIND(info) (((info) >> 24) & 0x7f) +#define BTF_INFO_VLEN(info) ((info) & 0xffffff) #define BTF_INFO_KFLAG(info) ((info) >> 31) enum { |