info: expose bpf_prog_info fields to ProgramInfo

Exposes additional metadata fields from `bpf_prog_info` to
`ProgramInfo`:
- jited_prog_len
- xlated_prog_len
- load_time
- verified_insns

Signed-off-by: tyrone-wu <wudevelops@gmail.com>

info.go

@@ -112,6 +112,11 @@ type ProgramInfo struct {
 	// Name as supplied by user space at load time. Available from 4.15.
 	Name string
 
+	JitedSize            uint32
+	TranslatedSize       uint32
+	LoadTime             time.Duration
+	VerifiedInstructions uint32
+
 	createdByUID     uint32
 	haveCreatedByUID bool
 	btf              btf.ID
@@ -137,11 +142,15 @@ func newProgramInfoFromFd(fd *sys.FD) (*ProgramInfo, error) {
 	}
 
 	pi := ProgramInfo{
-		Type: ProgramType(info.Type),
-		id:   ProgramID(info.Id),
-		Tag:  hex.EncodeToString(info.Tag[:]),
-		Name: unix.ByteSliceToString(info.Name[:]),
-		btf:  btf.ID(info.BtfId),
+		Type:                 ProgramType(info.Type),
+		id:                   ProgramID(info.Id),
+		Tag:                  hex.EncodeToString(info.Tag[:]),
+		Name:                 unix.ByteSliceToString(info.Name[:]),
+		JitedSize:            info.JitedProgLen,
+		TranslatedSize:       info.XlatedProgLen,
+		LoadTime:             time.Duration(info.LoadTime),
+		VerifiedInstructions: info.VerifiedInsns,
+		btf:                  btf.ID(info.BtfId),
 		stats: &programStats{
 			runtime:         time.Duration(info.RunTimeNs),
 			runCount:        info.RunCnt,