> + prev_cgrp = task_css_check(prev, perf_event_cgrp_id, 1)->cgroup; > + next_cgrp = task_css_check(next, perf_event_cgrp_id, 1)->cgroup; > + > + if (prev_cgrp != next_cgrp) > + perf_sw_event_sched(PERF_COUNT_SW_CGROUP_SWITCHES, 1, 0);
Seems to be the perf cgroup only, not all cgroups. That's a big difference and needs to be documented properly. Probably would make sense to have two events for both, one for all cgroups and one for perf only. -Andi
