Re: [PATCH V5 1/1] bpf: control events stored in PERF_EVENT_ARRAY maps trace data output when perf sampling

[Wangnan (F)]

Hi Alexei,

On 2015/10/21 21:42, Wangnan (F) wrote:
> One alternative solution I can image is to attach a BPF program
> at sampling like kprobe, and return 0 if we don't want sampling
> take action. Thought?

Do you think attaching BPF programs to sampling is an acceptable idea?

Thank you.

> Actually speaking I don't like it very much
> because the principle of soft-disable is much simpler and safe, but
> if you really like it I think we can try.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/