Support `perf_event_open` to enable use of `ddprof`

[minusworld]

Description

ddprof is DataDog's profiler, which relies on perf_event_open. gvisor does not handle perf_event_open.

I use gvisor to satisfy security requirements for various workloads, some of which are quite heavy with resources. I recently tried to use ddprof to collect performance profiles but was unable to run it because gvisor does not handle perf_event_open.

Is this feature related to a specific bug?

No response

Do you have a specific solution in mind?

I surmise that implementing this syscall is not straightforward. If implementation is infeasible, is there a way to pass perf_event_open syscalls through to the kernel, perhaps by modifying seccomp rules?

Thanks!

[milantracy]

does https://gvisor.dev/docs/user_guide/debugging/#profiling work for you?

besides perf_event_open, there might be ioctls to be implemented