PERF_SAMPLE_MAX
if (attr->sample_type & ~(PERF_SAMPLE_MAX-1))
if (PERF_SAMPLE_MAX > PERF_SAMPLE_WEIGHT_STRUCT << 1) {
for (sample_type = 1; sample_type != PERF_SAMPLE_MAX;
sample_type = (PERF_SAMPLE_MAX - 1) & ~PERF_SAMPLE_WEIGHT;
sample_type = (PERF_SAMPLE_MAX - 1) & ~PERF_SAMPLE_WEIGHT_STRUCT;
if (attr->sample_type & ~(PERF_SAMPLE_MAX-1)) {