> > This new file descriptor argument doesn't exist today so it would > > need to create a new system call with more arguments > > Is that true? The first argument is a pointer to a struct that > contains its own size, so it can be expanded without an ABI break. I > don't see any reason why you couldn't cram more stuff in there.
You're right we could put the fd into the perf_event, but the following is still true: > > Obviously we would need to keep the old system call around > > for compability, so you would need to worry about this > > interaction in any case! > > > > So tying it together doesn't make any sense, because > > the problem has to be solved separately anyways. -Andi
