perf_exclude_event
if (perf_exclude_event(event, regs))
extern int perf_exclude_event(struct perf_event *event, struct pt_regs *regs);
if (perf_exclude_event(event, regs))
if (!bp->hw.state && !perf_exclude_event(bp, regs))
if (regs && !perf_exclude_event(event, regs)) {