1packet { 2 ftrace_events { 3 cpu: 0 4 event { 5 timestamp: 100 6 pid: 1 7 ion_stat { 8 buffer_id: 123 9 len: 1000 10 total_allocated: 2000 11 } 12 } 13 } 14} 15packet { 16 ftrace_events { 17 cpu: 0 18 event { 19 timestamp: 200 20 pid: 1 21 ion_stat { 22 buffer_id: 123 23 len: -1000 24 total_allocated: 1000 25 } 26 } 27 } 28} 29