Re: [RFC perf,bpf 1/5] perf, bpf: Introduce PERF_RECORD_BPF_EVENT

[David Ahern]

On 11/8/18 11:04 AM, Song Liu wrote:
> On the other hand, processing BPF load/unload events synchronously should
> not introduce too much overhead for meaningful use cases. If many BPF progs
> are being loaded/unloaded within short period of time, it is not the steady
> state that profiling works care about. 

but, profiling is not the only use case, and perf-record is common with
those other use cases.

I think that answers why your RFC set does not fork a thread for the bpf
events. You are focused on profiling and for already loaded programs or
for a small number of programs loaded by a specific workload started by
perf.