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

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.