Re: [QUESTION] Can uprobe_event support @ADDR, $retval,offs(FETCHARG)?

[Srikar Dronamraju]

Hi Hyeoncheol,

> uprobe_event only supports %REG arguments. I think that memory fetch,
> return value fetch, memory dereference functions in
> kernel/trace/trace_probe.c are good for uprobe_event.

Yes, these will be good to have and is listed as todo.

> So with a little
> modification of parse_probe_arg(), uprobe_event can support @ADDR,
> $retval, offs(FETCHARGS) except @SYM, $stack, $stackN. Is it right?

For some of these like the @sym, trace_uprobe.c may not be the right
place because the kernel will not be able to decode user space symbols. 

$retval needs uretprobes support

-- 
Thanks and Regards
Srikar

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/