On Tue, Aug 25, 2020 at 10:15:55PM +0900, Masami Hiramatsu wrote: > Yeah, kretprobe already provided the per-instance data (as far as > I know, only systemtap depends on it). We need to provide it for > such users.
Well, systemtap is out of tree, we don't _need_ to provide anything for them. Furthermore, the function-graph tracer's ret_stack, which you said you wanted to integrate with, also doesn't provide this. Ditching it makes things simpler in that all kretprobe_instance's will be the same and we no longer need per kretprobe storage of them. Anyway, let me try and preserve them for now...
