PERF_ATTACH_GROUP 1832 kernel/events/core.c if (event->attach_state & PERF_ATTACH_GROUP) PERF_ATTACH_GROUP 1835 kernel/events/core.c event->attach_state |= PERF_ATTACH_GROUP; PERF_ATTACH_GROUP 1988 kernel/events/core.c if (!(event->attach_state & PERF_ATTACH_GROUP)) PERF_ATTACH_GROUP 1991 kernel/events/core.c event->attach_state &= ~PERF_ATTACH_GROUP; PERF_ATTACH_GROUP 2207 kernel/events/core.c (event->attach_state & PERF_ATTACH_GROUP)) { PERF_ATTACH_GROUP 4686 kernel/events/core.c (PERF_ATTACH_CONTEXT|PERF_ATTACH_GROUP));