发自我的 iPhone
> 在 2015年10月21日，下午9:49，Peter Zijlstra <pet...@infradead.org> 写道： > >> On Wed, Oct 21, 2015 at 09:42:12PM +0800, Wangnan (F) wrote: >> How can an eBPF program access a !local event: >> >> when creating perf event array we don't care which perf event >> is for which CPU, so perf program can access any perf event in >> that array. > > So what is stopping the eBPF thing from calling perf_event_read_local() > on a !local event and triggering a kernel splat? I can understand the perf_event_read_local() case, but I really can't understand what is stopping us to write to an atomic field belong to a !local perf event. Could you please give a further explanation? Thank you. > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
