On Fri, 14 Nov 2025 17:24:43 +0800 Menglong Dong <[email protected]> wrote:
> Therefore, we introduce the "jmp" mode for bpf trampoline, as advised by > Alexei in [1]. And the logic will become this: > call foo -> jmp trampoline -> call foo-body -> > return foo-body -> return foo This obviously only works when there's a single function used by that trampoline. It also doesn't allow tracing of the return side (it's basically just the function tracer for a single function). Is there any mechanism to make sure that the trampoline being called is only used by that one function? I haven't looked at the code yet, but should there be a test that makes sure a trampoline isn't registered for two or more different functions? -- Steve
