from where it can see a prototype?

[anonys]

in ddk\11.23\sample-drvs\rdisk\rdisk.c.
There function ktune_savedefault (), from where it can see a prototype?

/* Store the default value for a tunable (possibly in a transaction): */
extern void ktune_savedefault __(( ktune_txnid_t,
ktune_id_t,
uint64_t ));

[Dennis Handly]

This looks like a prototype to me, though it would be nicer if it was in a .h file.

[Don Morris_1]

Perhaps /usr/include/sys/ktune.h?

[Dennis Handly]

>Don: Perhaps /usr/include/sys/ktune.h?

Yes it's in .