Reduce reliance on sys/sysproto.h pollution

[brooks]

Summary

Add sys/errno.h, sys/malloc.h, and vm/uma.h as needed.

sysproto.h currently includes sys/acl.h which currently includes
sys/param.h, sys/queue.h, and vm/uma.h which in turn bring in
sys/errno.h sys/malloc.h.

[brooks]

This review stack is the result of trying to remove sys/acl.h from sys/sysproto.h after 27676ae365f62c22f8daa816bf7a07d22bd081d9 and discovering that there were a lot of things that depended on its header pollution.

[kib]

sys/kern/kern_time.c

40

This is excessive. Or, at least in other places, the patch depends on vm/uma.h including sys/malloc.h.

[brooks]

• Add a sys/queue.h include after _KERNEL ifdef of sys/malloc.h in sys/acl.h
• Explain sys/malloc.h include in kern_time.c

[brooks]

Actually squash in sys/queue.h include

[brooks]

sys/kern/kern_time.c

40

It took a little poking around, but it turns out we need sys/malloc.h before sys/proc.h for the M_ macros we need to be declared. Arguably that's a bug in sys/proc.h.

[kib]

sys/kern/kern_time.c

40

The proc.h M_ declarations are under the #ifdef brace. I suspect they could be moved to sys/malloc.h without much hassle.

[brooks]

Drop sys/malloc.h in kern_time.c (depends on D44766)