Attempt to run without syscall tracepoints, if possible.

[umanwizard]

This implements the proposal in
#173 . Please see there for full details.

[christos68k]

There are a few linter failutes. Other than that, since we now allow running the agent without syscall tracepoints, we should probably also remove the eBPF integration test and its dependent hook.

CC: @florianl

[florianl]

[..] we should probably also remove the eBPF integration test and its dependent hook.

👍 on that

[fabled]

@umanwizard Are you working on the feedback or do you need help to finalize this PR?

[umanwizard]

Sorry, I dropped this. I'll address the feedback and send a new version soon.

[umanwizard]

I'm not sure I understand why we should remove the integration test. Isn't it still useful to have this integration test run? We just need to ensure that it is always running in an environment that has syscall probes available (which is the vast majority of environments)

[florianl]

I'm not sure I understand why we should remove the integration test.

With #205 a test was added that covers also the functionality of the named integration test for the tracepobe. And instead of a specific tracepoint that is written for the integration test, #205 tests the tracepoint that is actually used while running the eBPF profiler agent.

[umanwizard]

Okay. In that case we can indeed remove it.

[florianl]

With the PR only the updated support/ebpf/tracer.ebpf.release.arm64 is provided. Please also add the updated support/ebpf/tracer.ebpf.release.amd64.

[fabled]

LGTM. Thanks!