620 	struct perf_event *leader = event->group_leader;  in __perf_effective_state()
919 				      struct perf_event *group_leader)  in perf_cgroup_connect()  argument
948 	if (group_leader && group_leader->cgrp != cgrp) {  in perf_cgroup_connect()
1027 				      struct perf_event *group_leader)  in perf_cgroup_connect()  argument
1536 	if (event->group_leader != event)  in get_event_type()
1537 		event = event->group_leader;  in get_event_type()
1783 	if (event->group_leader == event) {  in list_add_event()
1885 			       event->group_leader->nr_siblings);  in perf_event__header_size()
1922 	__perf_event_read_size(event, event->group_leader->nr_siblings + 1);  in perf_event_validate_size()
1939 	struct perf_event *group_leader = event->group_leader, *pos;  in perf_group_attach()  local
1951 	if (group_leader == event)  in perf_group_attach()
1954 	WARN_ON_ONCE(group_leader->ctx != event->ctx);  in perf_group_attach()
1956 	group_leader->group_caps &= event->event_caps;  in perf_group_attach()
1958 	list_add_tail(&event->sibling_list, &group_leader->sibling_list);  in perf_group_attach()
1959 	group_leader->nr_siblings++;  in perf_group_attach()
1961 	perf_event__header_size(group_leader);  in perf_group_attach()
1963 	for_each_sibling_event(pos, group_leader)  in perf_group_attach()
1993 	if (event->group_leader == event)  in list_del_event()
2048 	for_each_sibling_event(iter, event->group_leader) {  in perf_put_aux_event()
2071 			      struct perf_event *group_leader)  in perf_get_aux_event()  argument
2079 	if (!group_leader)  in perf_get_aux_event()
2089 	    !perf_aux_output_match(event, group_leader))  in perf_get_aux_event()
2092 	if (event->attr.aux_sample_size && !group_leader->pmu->snapshot_aux)  in perf_get_aux_event()
2095 	if (!atomic_long_inc_not_zero(&group_leader->refcount))  in perf_get_aux_event()
2104 	event->aux_event = group_leader;  in perf_get_aux_event()
2132 	struct perf_event *leader = event->group_leader;  in perf_group_detach()
2153 		event->group_leader->nr_siblings--;  in perf_group_detach()
2167 		sibling->group_leader = sibling;  in perf_group_detach()
2442 	if (event == event->group_leader)  in __perf_event_disable()
2940 	struct perf_event *leader = event->group_leader;  in __perf_event_enable()
3010 		    event->group_leader == event)  in _perf_event_enable()
5327 	struct perf_event *leader = event->group_leader, *child;  in perf_read_group()
5529 	event = event->group_leader;  in perf_event_for_each()
6976 	struct perf_event *leader = event->group_leader, *sub;  in perf_output_read_group()
11416 	if (event->group_leader != event && pmu->task_ctx_nr != perf_sw_context) {  in perf_try_init_event()
11421 		ctx = perf_event_ctx_lock_nested(event->group_leader,  in perf_try_init_event()
11430 		perf_event_ctx_unlock(event->group_leader, ctx);  in perf_try_init_event()
11650 		 struct perf_event *group_leader,  in perf_event_alloc()  argument
11680 	if (!group_leader)  in perf_event_alloc()
11681 		group_leader = event;  in perf_event_alloc()
11706 	event->group_leader	= group_leader;  in perf_event_alloc()
11804 		err = perf_cgroup_connect(cgroup_fd, event, attr, group_leader);  in perf_event_alloc()
12144 __perf_event_ctx_lock_double(struct perf_event *group_leader,  in __perf_event_ctx_lock_double()  argument
12151 	gctx = READ_ONCE(group_leader->ctx);  in __perf_event_ctx_lock_double()
12160 	if (group_leader->ctx != gctx) {  in __perf_event_ctx_lock_double()
12214 	struct perf_event *group_leader = NULL, *output_event = NULL;  in SYSCALL_DEFINE5()  local
12294 		group_leader = group.file->private_data;  in SYSCALL_DEFINE5()
12296 			output_event = group_leader;  in SYSCALL_DEFINE5()
12298 			group_leader = NULL;  in SYSCALL_DEFINE5()
12309 	if (task && group_leader &&  in SYSCALL_DEFINE5()
12310 	    group_leader->attr.inherit != attr.inherit) {  in SYSCALL_DEFINE5()
12318 	event = perf_event_alloc(&attr, cpu, task, group_leader, NULL,  in SYSCALL_DEFINE5()
12347 	if (group_leader) {  in SYSCALL_DEFINE5()
12349 		    !in_software_context(group_leader)) {  in SYSCALL_DEFINE5()
12358 			pmu = group_leader->ctx->pmu;  in SYSCALL_DEFINE5()
12360 			   is_software_event(group_leader) &&  in SYSCALL_DEFINE5()
12361 			   (group_leader->group_caps & PERF_EV_CAP_SOFTWARE)) {  in SYSCALL_DEFINE5()
12383 	if (group_leader) {  in SYSCALL_DEFINE5()
12390 		if (group_leader->group_leader != group_leader)  in SYSCALL_DEFINE5()
12394 		if (group_leader->clock != event->clock)  in SYSCALL_DEFINE5()
12402 		if (group_leader->cpu != event->cpu)  in SYSCALL_DEFINE5()
12409 		if (group_leader->ctx->task != ctx->task)  in SYSCALL_DEFINE5()
12420 		if (!move_group && group_leader->ctx != ctx)  in SYSCALL_DEFINE5()
12461 		gctx = __perf_event_ctx_lock_double(group_leader, ctx);  in SYSCALL_DEFINE5()
12472 		if (!(group_leader->group_caps & PERF_EV_CAP_SOFTWARE)) {  in SYSCALL_DEFINE5()
12482 				perf_event_ctx_unlock(group_leader, gctx);  in SYSCALL_DEFINE5()
12492 		if (!exclusive_event_installable(group_leader, ctx))  in SYSCALL_DEFINE5()
12495 		for_each_sibling_event(sibling, group_leader) {  in SYSCALL_DEFINE5()
12506 		if (group_leader && group_leader->ctx != ctx) {  in SYSCALL_DEFINE5()
12539 	if (perf_need_aux_event(event) && !perf_get_aux_event(event, group_leader)) {  in SYSCALL_DEFINE5()
12565 		perf_remove_from_context(group_leader, 0);  in SYSCALL_DEFINE5()
12568 		for_each_sibling_event(sibling, group_leader) {  in SYSCALL_DEFINE5()
12589 		for_each_sibling_event(sibling, group_leader) {  in SYSCALL_DEFINE5()
12600 		perf_event__state_init(group_leader);  in SYSCALL_DEFINE5()
12601 		perf_install_in_context(ctx, group_leader, group_leader->cpu);  in SYSCALL_DEFINE5()
12620 		perf_event_ctx_unlock(group_leader, gctx);  in SYSCALL_DEFINE5()
12644 		perf_event_ctx_unlock(group_leader, gctx);  in SYSCALL_DEFINE5()
12797 		if (event->group_leader == event)  in perf_pmu_migrate_context()
13124 	      struct perf_event *group_leader,  in inherit_event()  argument
13143 					   group_leader, parent_event,  in inherit_event()