dtrace discuss - Mar 2007 - how to add probes with different argument in a provider and in opensolaris ?

Hi All,
    I am interested to add nfsv4 proble  to opensolaris
from sam''s blog

http://blogs.sun.com/samf/entry/a_dtrace_provider_for_nfs

the probes about "op-<operation-name>" will be added,
there are two argument for those probes
arg[0] are the same for all the probes. it looks like:


typedef struct v4soinfo {
uint32_t xid;

char *tag;
char *addr;
} v4soinfo_t;
but the secound argument is different for every probe.

nfs::op-read:start READ4args
nfs::op-open:start OPEN4args

.............

for the code in
uts/common/dtrace/sdt_subr.c

...................
{ "io", "start", 0, 0, "buf_t *", "bufinfo_t
*" },
{ "io", "start", 1, 0, "buf_t *", "devinfo_t
*" },

{ "io", "start", 2, 0, "buf_t *", "fileinfo_t
*" },

.....................
all "start" probe of io provider are the same argument no matter
what''s
the function.

arg[0] bufinfo_t *
arg[1] devinfo_t *
arg[2] fileinfo_t*

but sam''s request different function have a different arg[1].

op-read--->READ4args
op-open--->OPEN4args

if all the function have the same arg[1], I can copy the code the same

with io provider,
but it is different.

how can I need to do?
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