kern/60115: uvm stats for page in/out are inconsistent

["imuwoto%gmail.com@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60115
>Category:       kern
>Synopsis:       uvm stats for page in/out are inconsistent
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 22 12:15:00 +0000 2026
>Originator:     YAMAMOTO Takashi
>Release:        -current
>Organization:
>Environment:
>Description:
we have several uvm stats about page in/out.
they are quite inconsistent:

           | unit    | include aobj? | notes
-----------|---------|---------------|--------
nswget     | page    | yes           |
pageins    | page    | no            |
pdpageouts | cluster | yes           |
pgswapin   | -       | -             | unused
pgswapout  | page    | yes           |

>How-To-Repeat:
code inspection
>Fix: