[src/trunk]: src/usr.bin/vmstat Have vmstat -H report on vcache_hashtab.

[ad <ad%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9573e1693197
branches:  trunk
changeset: 967792:9573e1693197
user:      ad <ad%NetBSD.org@localhost>
date:      Sun Dec 22 17:27:53 2019 +0000

description:
Have vmstat -H report on vcache_hashtab.

diffstat:

 usr.bin/vmstat/vmstat.c |  31 ++++++++++++++++++++++++++-----
 1 files changed, 26 insertions(+), 5 deletions(-)

diffs (97 lines):

diff -r 627a4eadf012 -r 9573e1693197 usr.bin/vmstat/vmstat.c
--- a/usr.bin/vmstat/vmstat.c   Sun Dec 22 17:01:15 2019 +0000
+++ b/usr.bin/vmstat/vmstat.c   Sun Dec 22 17:27:53 2019 +0000
@@ -1,7 +1,7 @@
-/* $NetBSD: vmstat.c,v 1.228 2019/09/13 13:56:05 christos Exp $ */
+/* $NetBSD: vmstat.c,v 1.229 2019/12/22 17:27:53 ad Exp $ */
 
 /*-
- * Copyright (c) 1998, 2000, 2001, 2007 The NetBSD Foundation, Inc.
+ * Copyright (c) 1998, 2000, 2001, 2007, 2019 The NetBSD Foundation, Inc.
  * All rights reserved.
  *
  * This code is derived from software contributed to The NetBSD Foundation by:
@@ -70,7 +70,7 @@
 #if 0
 static char sccsid[] = "@(#)vmstat.c   8.2 (Berkeley) 3/1/95";
 #else
-__RCSID("$NetBSD: vmstat.c,v 1.228 2019/09/13 13:56:05 christos Exp $");
+__RCSID("$NetBSD: vmstat.c,v 1.229 2019/12/22 17:27:53 ad Exp $");
 #endif
 #endif /* not lint */
 
@@ -96,6 +96,8 @@
 #include <sys/time.h>
 #include <sys/queue.h>
 #include <sys/kernhist.h>
+#include <sys/vnode.h>
+#include <sys/vnode_impl.h>
 
 #include <uvm/uvm_extern.h>
 #include <uvm/uvm_stat.h>
@@ -223,7 +225,11 @@
        { .n_name = "_ncvhash" },
 #define        X_NCVHASHTBL    13
        { .n_name = "_ncvhashtbl" },
-#define X_HASHNL_SIZE  14      /* must be last */
+#define        X_NCVCACHEHASH  14
+       { .n_name = "_vcache_hashmask" },
+#define        X_NCVCACHETBL   15
+       { .n_name = "_vcache_hashtab" },
+#define X_HASHNL_SIZE  16      /* must be last */
        { .n_name = NULL },
 };
 
@@ -1842,7 +1848,9 @@
 
 enum hashtype {                        /* from <sys/systm.h> */
        HASH_LIST,
-       HASH_TAILQ
+       HASH_SLIST,
+       HASH_TAILQ,
+       HASH_PSLIST
 };
 
 struct uidinfo {               /* XXX: no kernel header file */
@@ -1880,6 +1888,10 @@
                X_UIHASH, X_UIHASHTBL,
                HASH_LIST, offsetof(struct uidinfo, ui_hash),
        }, {
+               "vnode cache hash",
+               X_NCVCACHEHASH, X_NCVCACHETBL,
+               HASH_SLIST, offsetof(struct vnode_impl, vi_hash),
+       }, {
                NULL, -1, -1, 0, 0,
        }
 };
@@ -1888,6 +1900,7 @@
 dohashstat(int verbose, int todo, const char *hashname)
 {
        LIST_HEAD(, generic)    *hashtbl_list;
+       SLIST_HEAD(, generic)   *hashtbl_slist;
        TAILQ_HEAD(, generic)   *hashtbl_tailq;
        struct kernel_hash      *curhash;
        void    *hashaddr, *hashbuf, *nhashbuf, *nextaddr;
@@ -1969,14 +1982,22 @@
                items = maxchain = 0;
                if (curhash->type == HASH_LIST) {
                        hashtbl_list = hashbuf;
+                       hashtbl_slist = NULL;
+                       hashtbl_tailq = NULL;
+               } else if (curhash->type == HASH_SLIST) {
+                       hashtbl_list = NULL;
+                       hashtbl_slist = hashbuf;
                        hashtbl_tailq = NULL;
                } else {
                        hashtbl_list = NULL;
+                       hashtbl_slist = NULL;
                        hashtbl_tailq = hashbuf;
                }
                for (i = 0; i < hashsize; i++) {
                        if (curhash->type == HASH_LIST)
                                nextaddr = LIST_FIRST(&hashtbl_list[i]);
+                       else if (curhash->type == HASH_SLIST)
+                               nextaddr = SLIST_FIRST(&hashtbl_slist[i]);
                        else
                                nextaddr = TAILQ_FIRST(&hashtbl_tailq[i]);
                        if (nextaddr == NULL)