diff options
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 6ee1febdf6ff..faf073d0287f 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -903,17 +903,14 @@ list_update_cgroup_event(struct perf_event *event, */ cpuctx = __get_cpu_context(ctx); - /* Only set/clear cpuctx->cgrp if current task uses event->cgrp. */ - if (perf_cgroup_from_task(current, ctx) != event->cgrp) { - /* - * We are removing the last cpu event in this context. - * If that event is not active in this cpu, cpuctx->cgrp - * should've been cleared by perf_cgroup_switch. - */ - WARN_ON_ONCE(!add && cpuctx->cgrp); - return; - } - cpuctx->cgrp = add ? event->cgrp : NULL; + /* + * cpuctx->cgrp is NULL until a cgroup event is sched in or + * ctx->nr_cgroup == 0 . + */ + if (add && perf_cgroup_from_task(current, ctx) == event->cgrp) + cpuctx->cgrp = event->cgrp; + else if (!add) + cpuctx->cgrp = NULL; } #else /* !CONFIG_CGROUP_PERF */ @@ -7726,7 +7723,7 @@ static void bpf_overflow_handler(struct perf_event *event, if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1)) goto out; rcu_read_lock(); - ret = BPF_PROG_RUN(event->prog, (void *)&ctx); + ret = BPF_PROG_RUN(event->prog, &ctx); rcu_read_unlock(); out: __this_cpu_dec(bpf_prog_active); |