Add cpuset(2) support to sepearate forked processes.

[cem]

tools/tools/crypto/cryptotest.c

469–473

threads is an arbitrary user-provided atoi() value and may exceed the logical range of the cpuset_t mask, corrupting the stack (BIT_SET doesn't bounds check).

[gnn]

Address issue of too many threads.

[cem]

Looks good other than these nits.

tools/tools/crypto/cryptotest.c

581

This isn't quite right either — sizeof(cpuset_t) * NBBY would be closer, but I'd just use the named constant CPU_SETSIZE from sys/_cpuset.h.

582

Perhaps: "choose fewer than %d.", ..., CPU_SETSIZE

[gnn]

I've address the main issues.

tools/tools/crypto/cryptotest.c

582

This is a play on the old Apple compiler message: "Too many errors, make fewer."

[cem]

LGTM. (I think the old compiler message only ever got notoriety because of how unhelpful it was; not something to aspire to. But whatever.)