* Copyright (c) 1997 Charles D. Cranor and Washington University.

/* $NetBSD: uvm_stat.c,v 1.46 2020/06/14 21:41:42 ad Exp $ */

/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* from: Id: uvm_stat.c,v 1.1.2.3 1997/12/19 15:01:00 mrg Exp
*/

/*
* uvm_stat.c
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_stat.c,v 1.46 2020/06/14 21:41:42 ad Exp $");

#include "opt_readahead.h"
#include "opt_ddb.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/cpu.h>

#include <uvm/uvm.h>
#include <uvm/uvm_ddb.h>

#ifdef DDB

#include <sys/pool.h>

/*
* uvmexp_print: ddb hook to print interesting uvm counters
*/
void
uvmexp_print(void (*pr)(const char *, ...)
__attribute__((__format__(__printf__,1,2))))
{
int64_t anonpg, execpg, filepg;
int active, inactive;
int poolpages, freepg;

uvm_estimatepageable(&active, &inactive);
poolpages = pool_totalpages_locked();

/* this will sync all counters. */
freepg = uvm_availmem(false);

anonpg = cpu_count_get(CPU_COUNT_ANONCLEAN) +
cpu_count_get(CPU_COUNT_ANONDIRTY) +
cpu_count_get(CPU_COUNT_ANONUNKNOWN);
execpg = cpu_count_get(CPU_COUNT_EXECPAGES);
filepg = cpu_count_get(CPU_COUNT_FILECLEAN) +
cpu_count_get(CPU_COUNT_FILEDIRTY) +
cpu_count_get(CPU_COUNT_FILEUNKNOWN) -
execpg;

(*pr)("Current UVM status:\n");
(*pr)(" pagesize=%d (0x%x), pagemask=0x%x, pageshift=%d, ncolors=%d\n",
uvmexp.pagesize, uvmexp.pagesize, uvmexp.pagemask,
uvmexp.pageshift, uvmexp.ncolors);
(*pr)(" %d VM pages: %d active, %d inactive, %d wired, %d free\n",
uvmexp.npages, active, inactive, uvmexp.wired, freepg);
(*pr)(" pages %" PRId64 " anon, %" PRId64 " file, %" PRId64 " exec\n",
anonpg, filepg, execpg);
(*pr)(" freemin=%d, free-target=%d, wired-max=%d\n",
uvmexp.freemin, uvmexp.freetarg, uvmexp.wiredmax);
(*pr)(" resv-pg=%d, resv-kernel=%d\n",
uvmexp.reserve_pagedaemon, uvmexp.reserve_kernel);
(*pr)(" bootpages=%d, poolpages=%d\n",
uvmexp.bootpages, poolpages);

(*pr)(" faults=%" PRId64 ", traps=%" PRId64 ", "
"intrs=%" PRId64 ", ctxswitch=%" PRId64 "\n",
cpu_count_get(CPU_COUNT_NFAULT),
cpu_count_get(CPU_COUNT_NTRAP),
cpu_count_get(CPU_COUNT_NINTR),
cpu_count_get(CPU_COUNT_NSWTCH));
(*pr)(" softint=%" PRId64 ", syscalls=%" PRId64 "\n",
cpu_count_get(CPU_COUNT_NSOFT),
cpu_count_get(CPU_COUNT_NSYSCALL));

(*pr)(" fault counts:\n");
(*pr)(" noram=%" PRId64 ", noanon=%" PRId64 ", pgwait=%" PRId64
", pgrele=%" PRId64 "\n",
cpu_count_get(CPU_COUNT_FLTNORAM),
cpu_count_get(CPU_COUNT_FLTNOANON),
cpu_count_get(CPU_COUNT_FLTPGWAIT),
cpu_count_get(CPU_COUNT_FLTPGRELE));
(*pr)(" ok relocks(total)=%" PRId64 "(%" PRId64 "), "
"anget(retrys)=%" PRId64 "(%" PRId64 "), amapcopy=%" PRId64 "\n",
cpu_count_get(CPU_COUNT_FLTRELCKOK),
cpu_count_get(CPU_COUNT_FLTRELCK),
cpu_count_get(CPU_COUNT_FLTANGET),
cpu_count_get(CPU_COUNT_FLTANRETRY),
cpu_count_get(CPU_COUNT_FLTAMCOPY));
(*pr)(" neighbor anon/obj pg=%" PRId64 "/%" PRId64
", gets(lock/unlock)=%" PRId64 "/%" PRId64 "\n",
cpu_count_get(CPU_COUNT_FLTNAMAP),
cpu_count_get(CPU_COUNT_FLTNOMAP),
cpu_count_get(CPU_COUNT_FLTLGET),
cpu_count_get(CPU_COUNT_FLTGET));
(*pr)(" cases: anon=%" PRId64 ", anoncow=%" PRId64 ", obj=%" PRId64
", prcopy=%" PRId64 ", przero=%" PRId64 "\n",
cpu_count_get(CPU_COUNT_FLT_ANON),
cpu_count_get(CPU_COUNT_FLT_ACOW),
cpu_count_get(CPU_COUNT_FLT_OBJ),
cpu_count_get(CPU_COUNT_FLT_PRCOPY),
cpu_count_get(CPU_COUNT_FLT_PRZERO));

(*pr)(" daemon and swap counts:\n");
(*pr)(" woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n",
uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan,
uvmexp.pdanscan);
(*pr)(" busy=%d, freed=%d, reactivate=%d, deactivate=%d\n",
uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact);
(*pr)(" pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts,
uvmexp.pdpending, uvmexp.nswget);
(*pr)(" nswapdev=%d, swpgavail=%d\n",
uvmexp.nswapdev, uvmexp.swpgavail);
(*pr)(" swpages=%d, swpginuse=%d, swpgonly=%d, paging=%d\n",
uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging);
}
#endif

#if defined(READAHEAD_STATS)

#define UVM_RA_EVCNT_DEFINE(name) \
struct evcnt uvm_ra_##name = \
EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "readahead", #name); \
EVCNT_ATTACH_STATIC(uvm_ra_##name);

UVM_RA_EVCNT_DEFINE(total);
UVM_RA_EVCNT_DEFINE(hit);
UVM_RA_EVCNT_DEFINE(miss);

#endif /* defined(READAHEAD_STATS) */