On Fri, 30 Nov 2018 15:01:58 +0100 Jiri Olsa <[email protected]> wrote:
> > or perhaps just tracepoints.. does not seem to make much > > sense for he events > > actualy the syscalls seems to be enough for now ;-) I tried > something and ended up with hack below Actually, we *only* want to do syscalls. We really don't want to add blocking to trace events. That would be a nightmare for deadlocks and such. I was thinking about adding a PTRACE feature that makes this part of PTRACE. That is, we start this via PTRACE and let PTRACE signal the tracer process when the tracee process blocks, and it can then wake up the tracee process. A tracer must have PTRACE permissions anyway. The goal of this is to speed up syscall tracing. -- Steve
