Re: [RFC 1/2] perf core: Add PERF_COUNT_SW_CGROUP_SWITCHES event

[Andi Kleen]

> +	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