adding SDT probe functions with 6+ DTrace arguments

[George Neville-Neil]

On May 30, 2013, at 2:14 , Brendan Gregg <brendan.gregg at joyent.com> wrote:

> G'Day Mark,
> 
> As this might be interesting: to check that DTRACE_PROBE7 worked, in
> Solaris I had added an sdt:::test probe, which could be invoked by the
> DTrace test suite (sdt/tst.sdtargs.c) by calling uadmin() with A_SDTTEST:
> 
>        case A_SDTTEST:
>        {
>                DTRACE_PROBE7(test, int, 1, int, 2, int, 3, int, 4, int, 5,
>                    int, 6, int, 7);
>                break;
>        }
> 
> Getting the tcp and ip providers working will be great.
> 

Chiming in late.  Yes, let's extend the SDT macros in line with what we've done
already.  This will also make it easy to MFC to 9 and 8.

Best,
George