The current implementation of vm_page_alloc_freelist() does not handle
order > 0 correctly. Remove order parameter to the function and use it
only for order 0 pages.

    functionality with custom solution

        add the PLL set functions to cpuops

This commit merges the MIPS platform changes that was now stable in
-CURRENT into 8-STABLE. The MIPS changesets are too many (~400) to list
here. But the changesets merged in this commit that affect other platforms
are summarized below:

r204635 : (changes to sys/dev/hwpmc, lib/libpmc, sys/sys/pmc.h)
Add support for hwpmc(4) on the MIPS 24K, 32 bit, embedded processor.

r205845: (changes to sys/modules/Makefile)
Fix for building modules on mips and arm.

r204031: (changes to sys/kern/link_elf_obj.c)
printf fix, as part of kernel module support for MIPS.

r206404: (changes to sys/arm/include/bus.h)
Add BUS_SPACE_UNRESTRICTED and define it to be ~0, just like all the
other platforms - for arm and mips.

r206819: (changes to sys/vm/)
Add VMFS_TLB_ALIGNED_SPACE option and kmem_alloc_nofault_space(), which
is used to allocate kernel stack address on MIPS.

r208165, r211087: (sys/kern/subr_smp.c, sys/kern/sched_ule.c)
Enable ULE scheduler for MIPS, Fix for an issue in SMP when 32 cpus are
enabled.

r208659: (sys/{ia64/ia64,mips/mips,sun4v/sun4v}/pmap.c)
Simplify the inner loop of get_pv_entry()

r208794: (changes to sys/vm/)
Make vm_contig_grow_cache() extern, and use it when vm_phys_alloc_contig()
fails to allocate MIPS page table pages.

r210327:  (changes to sys/vm/)
Support for MIPS page table page allocation.  Add a new function 'vm_page_t
vm_page_alloc_freelist(int flind, int order, int req)' to vm/vm_page.c to
allocate a page from a specified freelist, and other related changes.

Reviewed by:	alc(vm changes only)
Approved by:	kib(re), alc(vm), imp(mips), jmallett(mips), gnn(mips pmc)

Fix typos.

PR:	bin/148894
Submitted by:	olgeni

  Add new tunable 'net.link.ifqmaxlen' to set default send interface
  queue length. The default value for this parameter is 50, which is
  quite low for many of today's uses and the only way to modify this
  parameter right now is to edit if_var.h file. Also add read-only
  sysctl with the same name, so that it's possible to retrieve the
  current value.

Update various places that store or manipulate CPU masks to use cpumask_t
instead of int or u_int.  Since cpumask_t is currently u_int on all
platforms this should just be a cosmetic change.

Converted the remainder of the NIC drivers to use the mii_attach()
introduced in r213878 (MFC'ed to stable/8 in r214685) instead of
mii_phy_probe(). Unlike r213893 (MFC'ed to stable/8 in r214909) these
are only straight forward conversions though.

Reviewed by:	yongari

Reorganize syscall entry and leave handling.
Implement ptrace_lwpinfo pl_flags PL_FLAG_SCE, PL_FLAG_SCX and
PL_FLAG_EXEC.

The i386, amd64, sparc64, sun4v, powerpc and ia64 syscall()s are
changed to use syscallenter()/syscallret(). MIPS and arm are not
converted and use the mostly unchanged syscall() implementation.

MFC r208514:
Change ia64' struct syscall_args definition so that args is a pointer to
the arguments array instead of array itself.

MFC r208566:
Allow to use syscallname(9) outside subr_trap.c.

MFC r209258 (by rpaulo):
Make DTrace syscall provider work again by including opt_kdtrace.h here.

MFC r209313:
Only enable kdtrace hook in the LINT on the architectures that implement it.

MFC r209697:
Obey sv_syscallnames bounds in syscallname().

NOTE: The KBI of the struct sysentvec is changed, new required members
sv_set_syscall_retval, sv_fetch_syscall_args and sv_syscallnames are
added. The sv_prepsyscall field is now ignored. Third-party modules
using the struct sysentvec must be modified and recompiled, we believe
that only ABI emulators are affected. No such out-of-tree modules are
known. In-tree modules that are affected by the change were converted
to depend on exact version of the kernel, see r214421.