set_tracer_flag
ret = set_tracer_flag(tr, 1ULL << ret, !neg);
ret = set_tracer_flag(tr, 1ULL << index, val);
set_tracer_flag(tr, 1ULL << i, 0);
int set_tracer_flag(struct trace_array *tr, u64 mask, int enabled);
set_tracer_flag(tr, TRACE_ITER(OVERWRITE), 1);
set_tracer_flag(tr, TRACE_ITER(LATENCY_FMT), 1);
set_tracer_flag(tr, TRACE_ITER(PAUSE_ON_TRACE), 1);
set_tracer_flag(tr, TRACE_ITER(LATENCY_FMT), lat_flag);
set_tracer_flag(tr, TRACE_ITER(OVERWRITE), overwrite_flag);
set_tracer_flag(tr, TRACE_ITER(PAUSE_ON_TRACE), pause_flag);
set_tracer_flag(tr, TRACE_ITER(OVERWRITE), 1);
set_tracer_flag(tr, TRACE_ITER(LATENCY_FMT), 1);
set_tracer_flag(tr, TRACE_ITER(LATENCY_FMT), lat_flag);
set_tracer_flag(tr, TRACE_ITER(OVERWRITE), overwrite_flag);