On Fri, 29 Mar 2024 16:28:33 -0700 Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx> wrote: > I thought I'll just ask instead of digging through code, sorry for > being lazy :) Is there any way to pass pt_regs/ftrace_regs captured > before function execution to a return probe (fexit/kretprobe)? I.e., > how hard is it to pass input function arguments to a kretprobe? That's > the biggest advantage of fexit over kretprobe, and if we can make > these original pt_regs/ftrace_regs available to kretprobe, then > multi-kretprobe will effectively be this multi-fexit. This should be possible with the updates that Masami is doing with the fgraph code. -- Steve
