- Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter

  in place.  To do per-cpu stats, convert all fields that previously were
  maintained in the vmmeters that sit in pcpus to counter(9).
- Since some vmmeter stats may be touched at very early stages of boot,
  before we have set up UMA and we can do counter_u64_alloc(), provide an
  early counter mechanism:
  o Leave one spare uint64_t in struct pcpu, named pc_early_dummy_counter.
  o Point counter(9) fields of vmmeter to pcpu[0].pc_early_dummy_counter,
    so that at early stages of boot, before counters are allocated we already
    point to a counter that can be safely written to.
  o For sparc64 that required a whole dummy pcpu[MAXCPU] array.

Further related changes:
- Don't include vmmeter.h into pcpu.h.
- vm.stats.vm.v_swappgsout and vm.stats.vm.v_swappgsin changed to 64-bit,
  to match kernel representation.
- struct vmmeter hidden under _KERNEL, and only vmstat(1) is an exclusion.

This is based on benno@'s 4-year old patch:
https://lists.freebsd.org/pipermail/freebsd-arch/2013-July/014471.html

Reviewed by:	kib, gallatin, marius, lidl
Differential Revision:	https://reviews.freebsd.org/D10156

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 5aeefbf1c09a..e6befe15b915 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -2748,7 +2748,7 @@ vm_page_free_toq(vm_page_t m)
 	} else
 		KASSERT(m->queue == PQ_NONE,
 		    ("vm_page_free_toq: unmanaged page %p is queued", m));
-	PCPU_INC(cnt.v_tfree);
+	VM_CNT_INC(v_tfree);
 
 	if (vm_page_sbusied(m))
 		panic("vm_page_free: freeing busy page %p", m);