1413 lines
29 KiB
C
1413 lines
29 KiB
C
/* $NetBSD: uvm_pdpolicy_clockpro.c,v 1.15 2008/06/04 12:41:40 ad Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c)2005, 2006 YAMAMOTO Takashi,
|
|
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
*/
|
|
|
|
/*
|
|
* CLOCK-Pro replacement policy:
|
|
* http://www.cs.wm.edu/hpcs/WWW/HTML/publications/abs05-3.html
|
|
*
|
|
* approximation of the list of non-resident pages using hash:
|
|
* http://linux-mm.org/ClockProApproximation
|
|
*/
|
|
|
|
/* #define CLOCKPRO_DEBUG */
|
|
|
|
#if defined(PDSIM)
|
|
|
|
#include "pdsim.h"
|
|
|
|
#else /* defined(PDSIM) */
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: uvm_pdpolicy_clockpro.c,v 1.15 2008/06/04 12:41:40 ad Exp $");
|
|
|
|
#include "opt_ddb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/hash.h>
|
|
|
|
#include <uvm/uvm.h>
|
|
#include <uvm/uvm_pdpolicy.h>
|
|
#include <uvm/uvm_pdpolicy_impl.h>
|
|
|
|
#if ((__STDC_VERSION__ - 0) >= 199901L)
|
|
#define DPRINTF(...) /* nothing */
|
|
#define WARN(...) printf(__VA_ARGS__)
|
|
#else /* ((__STDC_VERSION__ - 0) >= 199901L) */
|
|
#define DPRINTF(a...) /* nothing */ /* GCC */
|
|
#define WARN(a...) printf(a)
|
|
#endif /* ((__STDC_VERSION__ - 0) >= 199901L) */
|
|
|
|
#define dump(a) /* nothing */
|
|
|
|
#undef USEONCE2
|
|
#define LISTQ
|
|
#undef ADAPTIVE
|
|
|
|
#endif /* defined(PDSIM) */
|
|
|
|
#if !defined(CLOCKPRO_COLDPCT)
|
|
#define CLOCKPRO_COLDPCT 10
|
|
#endif /* !defined(CLOCKPRO_COLDPCT) */
|
|
|
|
#define CLOCKPRO_COLDPCTMAX 90
|
|
|
|
#if !defined(CLOCKPRO_HASHFACTOR)
|
|
#define CLOCKPRO_HASHFACTOR 2
|
|
#endif /* !defined(CLOCKPRO_HASHFACTOR) */
|
|
|
|
#define CLOCKPRO_NEWQMIN ((1024 * 1024) >> PAGE_SHIFT) /* XXX */
|
|
|
|
int clockpro_hashfactor = CLOCKPRO_HASHFACTOR;
|
|
|
|
PDPOL_EVCNT_DEFINE(nresrecordobj)
|
|
PDPOL_EVCNT_DEFINE(nresrecordanon)
|
|
PDPOL_EVCNT_DEFINE(nreslookupobj)
|
|
PDPOL_EVCNT_DEFINE(nreslookupanon)
|
|
PDPOL_EVCNT_DEFINE(nresfoundobj)
|
|
PDPOL_EVCNT_DEFINE(nresfoundanon)
|
|
PDPOL_EVCNT_DEFINE(nresanonfree)
|
|
PDPOL_EVCNT_DEFINE(nresconflict)
|
|
PDPOL_EVCNT_DEFINE(nresoverwritten)
|
|
PDPOL_EVCNT_DEFINE(nreshandhot)
|
|
|
|
PDPOL_EVCNT_DEFINE(hhottakeover)
|
|
PDPOL_EVCNT_DEFINE(hhotref)
|
|
PDPOL_EVCNT_DEFINE(hhotunref)
|
|
PDPOL_EVCNT_DEFINE(hhotcold)
|
|
PDPOL_EVCNT_DEFINE(hhotcoldtest)
|
|
|
|
PDPOL_EVCNT_DEFINE(hcoldtakeover)
|
|
PDPOL_EVCNT_DEFINE(hcoldref)
|
|
PDPOL_EVCNT_DEFINE(hcoldunref)
|
|
PDPOL_EVCNT_DEFINE(hcoldreftest)
|
|
PDPOL_EVCNT_DEFINE(hcoldunreftest)
|
|
PDPOL_EVCNT_DEFINE(hcoldunreftestspeculative)
|
|
PDPOL_EVCNT_DEFINE(hcoldhot)
|
|
|
|
PDPOL_EVCNT_DEFINE(speculativeenqueue)
|
|
PDPOL_EVCNT_DEFINE(speculativehit1)
|
|
PDPOL_EVCNT_DEFINE(speculativehit2)
|
|
PDPOL_EVCNT_DEFINE(speculativemiss)
|
|
|
|
#define PQ_REFERENCED PQ_PRIVATE1
|
|
#define PQ_HOT PQ_PRIVATE2
|
|
#define PQ_TEST PQ_PRIVATE3
|
|
#define PQ_INITIALREF PQ_PRIVATE4
|
|
#if PQ_PRIVATE6 != PQ_PRIVATE5 * 2 || PQ_PRIVATE7 != PQ_PRIVATE6 * 2
|
|
#error PQ_PRIVATE
|
|
#endif
|
|
#define PQ_QMASK (PQ_PRIVATE5|PQ_PRIVATE6|PQ_PRIVATE7)
|
|
#define PQ_QFACTOR PQ_PRIVATE5
|
|
#define PQ_SPECULATIVE PQ_PRIVATE8
|
|
|
|
#define CLOCKPRO_NOQUEUE 0
|
|
#define CLOCKPRO_NEWQ 1 /* small queue to clear initial ref. */
|
|
#if defined(LISTQ)
|
|
#define CLOCKPRO_COLDQ 2
|
|
#define CLOCKPRO_HOTQ 3
|
|
#else /* defined(LISTQ) */
|
|
#define CLOCKPRO_COLDQ (2 + coldqidx) /* XXX */
|
|
#define CLOCKPRO_HOTQ (3 - coldqidx) /* XXX */
|
|
#endif /* defined(LISTQ) */
|
|
#define CLOCKPRO_LISTQ 4
|
|
#define CLOCKPRO_NQUEUE 4
|
|
|
|
static inline void
|
|
clockpro_setq(struct vm_page *pg, int qidx)
|
|
{
|
|
KASSERT(qidx >= CLOCKPRO_NOQUEUE);
|
|
KASSERT(qidx <= CLOCKPRO_NQUEUE);
|
|
|
|
pg->pqflags = (pg->pqflags & ~PQ_QMASK) | (qidx * PQ_QFACTOR);
|
|
}
|
|
|
|
static inline int
|
|
clockpro_getq(struct vm_page *pg)
|
|
{
|
|
int qidx;
|
|
|
|
qidx = (pg->pqflags & PQ_QMASK) / PQ_QFACTOR;
|
|
KASSERT(qidx >= CLOCKPRO_NOQUEUE);
|
|
KASSERT(qidx <= CLOCKPRO_NQUEUE);
|
|
return qidx;
|
|
}
|
|
|
|
typedef struct {
|
|
struct pglist q_q;
|
|
int q_len;
|
|
} pageq_t;
|
|
|
|
struct clockpro_state {
|
|
int s_npages;
|
|
int s_coldtarget;
|
|
int s_ncold;
|
|
|
|
int s_newqlenmax;
|
|
pageq_t s_q[CLOCKPRO_NQUEUE];
|
|
|
|
struct uvm_pctparam s_coldtargetpct;
|
|
};
|
|
|
|
static pageq_t *
|
|
clockpro_queue(struct clockpro_state *s, int qidx)
|
|
{
|
|
|
|
KASSERT(CLOCKPRO_NOQUEUE < qidx);
|
|
KASSERT(qidx <= CLOCKPRO_NQUEUE);
|
|
|
|
return &s->s_q[qidx - 1];
|
|
}
|
|
|
|
#if !defined(LISTQ)
|
|
|
|
static int coldqidx;
|
|
|
|
static void
|
|
clockpro_switchqueue(void)
|
|
{
|
|
|
|
coldqidx = 1 - coldqidx;
|
|
}
|
|
|
|
#endif /* !defined(LISTQ) */
|
|
|
|
static struct clockpro_state clockpro;
|
|
static struct clockpro_scanstate {
|
|
int ss_nscanned;
|
|
} scanstate;
|
|
|
|
/* ---------------------------------------- */
|
|
|
|
static void
|
|
pageq_init(pageq_t *q)
|
|
{
|
|
|
|
TAILQ_INIT(&q->q_q);
|
|
q->q_len = 0;
|
|
}
|
|
|
|
static int
|
|
pageq_len(const pageq_t *q)
|
|
{
|
|
|
|
return q->q_len;
|
|
}
|
|
|
|
static struct vm_page *
|
|
pageq_first(const pageq_t *q)
|
|
{
|
|
|
|
return TAILQ_FIRST(&q->q_q);
|
|
}
|
|
|
|
static void
|
|
pageq_insert_tail(pageq_t *q, struct vm_page *pg)
|
|
{
|
|
|
|
TAILQ_INSERT_TAIL(&q->q_q, pg, pageq.queue);
|
|
q->q_len++;
|
|
}
|
|
|
|
#if defined(LISTQ)
|
|
static void
|
|
pageq_insert_head(pageq_t *q, struct vm_page *pg)
|
|
{
|
|
|
|
TAILQ_INSERT_HEAD(&q->q_q, pg, pageq.queue);
|
|
q->q_len++;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
pageq_remove(pageq_t *q, struct vm_page *pg)
|
|
{
|
|
|
|
#if 1
|
|
KASSERT(clockpro_queue(&clockpro, clockpro_getq(pg)) == q);
|
|
#endif
|
|
KASSERT(q->q_len > 0);
|
|
TAILQ_REMOVE(&q->q_q, pg, pageq.queue);
|
|
q->q_len--;
|
|
}
|
|
|
|
static struct vm_page *
|
|
pageq_remove_head(pageq_t *q)
|
|
{
|
|
struct vm_page *pg;
|
|
|
|
pg = TAILQ_FIRST(&q->q_q);
|
|
if (pg == NULL) {
|
|
KASSERT(q->q_len == 0);
|
|
return NULL;
|
|
}
|
|
pageq_remove(q, pg);
|
|
return pg;
|
|
}
|
|
|
|
/* ---------------------------------------- */
|
|
|
|
static void
|
|
clockpro_insert_tail(struct clockpro_state *s, int qidx, struct vm_page *pg)
|
|
{
|
|
pageq_t *q = clockpro_queue(s, qidx);
|
|
|
|
clockpro_setq(pg, qidx);
|
|
pageq_insert_tail(q, pg);
|
|
}
|
|
|
|
#if defined(LISTQ)
|
|
static void
|
|
clockpro_insert_head(struct clockpro_state *s, int qidx, struct vm_page *pg)
|
|
{
|
|
pageq_t *q = clockpro_queue(s, qidx);
|
|
|
|
clockpro_setq(pg, qidx);
|
|
pageq_insert_head(q, pg);
|
|
}
|
|
|
|
#endif
|
|
/* ---------------------------------------- */
|
|
|
|
typedef uint32_t nonres_cookie_t;
|
|
#define NONRES_COOKIE_INVAL 0
|
|
|
|
typedef uintptr_t objid_t;
|
|
|
|
/*
|
|
* XXX maybe these hash functions need reconsideration,
|
|
* given that hash distribution is critical here.
|
|
*/
|
|
|
|
static uint32_t
|
|
pageidentityhash1(objid_t obj, off_t idx)
|
|
{
|
|
uint32_t hash = HASH32_BUF_INIT;
|
|
|
|
#if 1
|
|
hash = hash32_buf(&idx, sizeof(idx), hash);
|
|
hash = hash32_buf(&obj, sizeof(obj), hash);
|
|
#else
|
|
hash = hash32_buf(&obj, sizeof(obj), hash);
|
|
hash = hash32_buf(&idx, sizeof(idx), hash);
|
|
#endif
|
|
return hash;
|
|
}
|
|
|
|
static uint32_t
|
|
pageidentityhash2(objid_t obj, off_t idx)
|
|
{
|
|
uint32_t hash = HASH32_BUF_INIT;
|
|
|
|
hash = hash32_buf(&obj, sizeof(obj), hash);
|
|
hash = hash32_buf(&idx, sizeof(idx), hash);
|
|
return hash;
|
|
}
|
|
|
|
static nonres_cookie_t
|
|
calccookie(objid_t obj, off_t idx)
|
|
{
|
|
uint32_t hash = pageidentityhash2(obj, idx);
|
|
nonres_cookie_t cookie = hash;
|
|
|
|
if (__predict_false(cookie == NONRES_COOKIE_INVAL)) {
|
|
cookie++; /* XXX */
|
|
}
|
|
return cookie;
|
|
}
|
|
|
|
#define BUCKETSIZE 14
|
|
struct bucket {
|
|
int cycle;
|
|
int cur;
|
|
nonres_cookie_t pages[BUCKETSIZE];
|
|
};
|
|
static int cycle_target;
|
|
static int cycle_target_frac;
|
|
|
|
static struct bucket static_bucket;
|
|
static struct bucket *buckets = &static_bucket;
|
|
static size_t hashsize = 1;
|
|
|
|
static int coldadj;
|
|
#define COLDTARGET_ADJ(d) coldadj += (d)
|
|
|
|
#if defined(PDSIM)
|
|
|
|
static void *
|
|
clockpro_hashalloc(int n)
|
|
{
|
|
size_t allocsz = sizeof(*buckets) * n;
|
|
|
|
return malloc(allocsz);
|
|
}
|
|
|
|
static void
|
|
clockpro_hashfree(void *p, int n)
|
|
{
|
|
|
|
free(p);
|
|
}
|
|
|
|
#else /* defined(PDSIM) */
|
|
|
|
static void *
|
|
clockpro_hashalloc(int n)
|
|
{
|
|
size_t allocsz = round_page(sizeof(*buckets) * n);
|
|
|
|
return (void *)uvm_km_alloc(kernel_map, allocsz, 0, UVM_KMF_WIRED);
|
|
}
|
|
|
|
static void
|
|
clockpro_hashfree(void *p, int n)
|
|
{
|
|
size_t allocsz = round_page(sizeof(*buckets) * n);
|
|
|
|
uvm_km_free(kernel_map, (vaddr_t)p, allocsz, UVM_KMF_WIRED);
|
|
}
|
|
|
|
#endif /* defined(PDSIM) */
|
|
|
|
static void
|
|
clockpro_hashinit(uint64_t n)
|
|
{
|
|
struct bucket *newbuckets;
|
|
struct bucket *oldbuckets;
|
|
size_t sz;
|
|
size_t oldsz;
|
|
int i;
|
|
|
|
sz = howmany(n, BUCKETSIZE);
|
|
sz *= clockpro_hashfactor;
|
|
newbuckets = clockpro_hashalloc(sz);
|
|
if (newbuckets == NULL) {
|
|
panic("%s: allocation failure", __func__);
|
|
}
|
|
for (i = 0; i < sz; i++) {
|
|
struct bucket *b = &newbuckets[i];
|
|
int j;
|
|
|
|
b->cycle = cycle_target;
|
|
b->cur = 0;
|
|
for (j = 0; j < BUCKETSIZE; j++) {
|
|
b->pages[j] = NONRES_COOKIE_INVAL;
|
|
}
|
|
}
|
|
/* XXX lock */
|
|
oldbuckets = buckets;
|
|
oldsz = hashsize;
|
|
buckets = newbuckets;
|
|
hashsize = sz;
|
|
/* XXX unlock */
|
|
if (oldbuckets != &static_bucket) {
|
|
clockpro_hashfree(oldbuckets, oldsz);
|
|
}
|
|
}
|
|
|
|
static struct bucket *
|
|
nonresident_getbucket(objid_t obj, off_t idx)
|
|
{
|
|
uint32_t hash;
|
|
|
|
hash = pageidentityhash1(obj, idx);
|
|
return &buckets[hash % hashsize];
|
|
}
|
|
|
|
static void
|
|
nonresident_rotate(struct bucket *b)
|
|
{
|
|
const int target = cycle_target;
|
|
const int cycle = b->cycle;
|
|
int cur;
|
|
int todo;
|
|
|
|
todo = target - cycle;
|
|
if (todo >= BUCKETSIZE * 2) {
|
|
todo = (todo % BUCKETSIZE) + BUCKETSIZE;
|
|
}
|
|
cur = b->cur;
|
|
while (todo > 0) {
|
|
if (b->pages[cur] != NONRES_COOKIE_INVAL) {
|
|
PDPOL_EVCNT_INCR(nreshandhot);
|
|
COLDTARGET_ADJ(-1);
|
|
}
|
|
b->pages[cur] = NONRES_COOKIE_INVAL;
|
|
cur++;
|
|
if (cur == BUCKETSIZE) {
|
|
cur = 0;
|
|
}
|
|
todo--;
|
|
}
|
|
b->cycle = target;
|
|
b->cur = cur;
|
|
}
|
|
|
|
static bool
|
|
nonresident_lookupremove(objid_t obj, off_t idx)
|
|
{
|
|
struct bucket *b = nonresident_getbucket(obj, idx);
|
|
nonres_cookie_t cookie = calccookie(obj, idx);
|
|
int i;
|
|
|
|
nonresident_rotate(b);
|
|
for (i = 0; i < BUCKETSIZE; i++) {
|
|
if (b->pages[i] == cookie) {
|
|
b->pages[i] = NONRES_COOKIE_INVAL;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static objid_t
|
|
pageobj(struct vm_page *pg)
|
|
{
|
|
const void *obj;
|
|
|
|
/*
|
|
* XXX object pointer is often freed and reused for unrelated object.
|
|
* for vnodes, it would be better to use something like
|
|
* a hash of fsid/fileid/generation.
|
|
*/
|
|
|
|
obj = pg->uobject;
|
|
if (obj == NULL) {
|
|
obj = pg->uanon;
|
|
KASSERT(obj != NULL);
|
|
KASSERT(pg->offset == 0);
|
|
}
|
|
|
|
return (objid_t)obj;
|
|
}
|
|
|
|
static off_t
|
|
pageidx(struct vm_page *pg)
|
|
{
|
|
|
|
KASSERT((pg->offset & PAGE_MASK) == 0);
|
|
return pg->offset >> PAGE_SHIFT;
|
|
}
|
|
|
|
static bool
|
|
nonresident_pagelookupremove(struct vm_page *pg)
|
|
{
|
|
bool found = nonresident_lookupremove(pageobj(pg), pageidx(pg));
|
|
|
|
if (pg->uobject) {
|
|
PDPOL_EVCNT_INCR(nreslookupobj);
|
|
} else {
|
|
PDPOL_EVCNT_INCR(nreslookupanon);
|
|
}
|
|
if (found) {
|
|
if (pg->uobject) {
|
|
PDPOL_EVCNT_INCR(nresfoundobj);
|
|
} else {
|
|
PDPOL_EVCNT_INCR(nresfoundanon);
|
|
}
|
|
}
|
|
return found;
|
|
}
|
|
|
|
static void
|
|
nonresident_pagerecord(struct vm_page *pg)
|
|
{
|
|
objid_t obj = pageobj(pg);
|
|
off_t idx = pageidx(pg);
|
|
struct bucket *b = nonresident_getbucket(obj, idx);
|
|
nonres_cookie_t cookie = calccookie(obj, idx);
|
|
|
|
#if defined(DEBUG)
|
|
int i;
|
|
|
|
for (i = 0; i < BUCKETSIZE; i++) {
|
|
if (b->pages[i] == cookie) {
|
|
PDPOL_EVCNT_INCR(nresconflict);
|
|
}
|
|
}
|
|
#endif /* defined(DEBUG) */
|
|
|
|
if (pg->uobject) {
|
|
PDPOL_EVCNT_INCR(nresrecordobj);
|
|
} else {
|
|
PDPOL_EVCNT_INCR(nresrecordanon);
|
|
}
|
|
nonresident_rotate(b);
|
|
if (b->pages[b->cur] != NONRES_COOKIE_INVAL) {
|
|
PDPOL_EVCNT_INCR(nresoverwritten);
|
|
COLDTARGET_ADJ(-1);
|
|
}
|
|
b->pages[b->cur] = cookie;
|
|
b->cur = (b->cur + 1) % BUCKETSIZE;
|
|
}
|
|
|
|
/* ---------------------------------------- */
|
|
|
|
#if defined(CLOCKPRO_DEBUG)
|
|
static void
|
|
check_sanity(void)
|
|
{
|
|
}
|
|
#else /* defined(CLOCKPRO_DEBUG) */
|
|
#define check_sanity() /* nothing */
|
|
#endif /* defined(CLOCKPRO_DEBUG) */
|
|
|
|
static void
|
|
clockpro_reinit(void)
|
|
{
|
|
|
|
clockpro_hashinit(uvmexp.npages);
|
|
}
|
|
|
|
static void
|
|
clockpro_init(void)
|
|
{
|
|
struct clockpro_state *s = &clockpro;
|
|
int i;
|
|
|
|
for (i = 0; i < CLOCKPRO_NQUEUE; i++) {
|
|
pageq_init(&s->s_q[i]);
|
|
}
|
|
s->s_newqlenmax = 1;
|
|
s->s_coldtarget = 1;
|
|
uvm_pctparam_init(&s->s_coldtargetpct, CLOCKPRO_COLDPCT, NULL);
|
|
}
|
|
|
|
static void
|
|
clockpro_tune(void)
|
|
{
|
|
struct clockpro_state *s = &clockpro;
|
|
int coldtarget;
|
|
|
|
#if defined(ADAPTIVE)
|
|
int coldmax = s->s_npages * CLOCKPRO_COLDPCTMAX / 100;
|
|
int coldmin = 1;
|
|
|
|
coldtarget = s->s_coldtarget;
|
|
if (coldtarget + coldadj < coldmin) {
|
|
coldadj = coldmin - coldtarget;
|
|
} else if (coldtarget + coldadj > coldmax) {
|
|
coldadj = coldmax - coldtarget;
|
|
}
|
|
coldtarget += coldadj;
|
|
#else /* defined(ADAPTIVE) */
|
|
coldtarget = UVM_PCTPARAM_APPLY(&s->s_coldtargetpct, s->s_npages);
|
|
if (coldtarget < 1) {
|
|
coldtarget = 1;
|
|
}
|
|
#endif /* defined(ADAPTIVE) */
|
|
|
|
s->s_coldtarget = coldtarget;
|
|
s->s_newqlenmax = coldtarget / 4;
|
|
if (s->s_newqlenmax < CLOCKPRO_NEWQMIN) {
|
|
s->s_newqlenmax = CLOCKPRO_NEWQMIN;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clockpro_movereferencebit(struct vm_page *pg)
|
|
{
|
|
bool referenced;
|
|
|
|
referenced = pmap_clear_reference(pg);
|
|
if (referenced) {
|
|
pg->pqflags |= PQ_REFERENCED;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clockpro_clearreferencebit(struct vm_page *pg)
|
|
{
|
|
|
|
clockpro_movereferencebit(pg);
|
|
pg->pqflags &= ~PQ_REFERENCED;
|
|
}
|
|
|
|
static void
|
|
clockpro___newqrotate(int len)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
pageq_t * const newq = clockpro_queue(s, CLOCKPRO_NEWQ);
|
|
struct vm_page *pg;
|
|
|
|
while (pageq_len(newq) > len) {
|
|
pg = pageq_remove_head(newq);
|
|
KASSERT(pg != NULL);
|
|
KASSERT(clockpro_getq(pg) == CLOCKPRO_NEWQ);
|
|
if ((pg->pqflags & PQ_INITIALREF) != 0) {
|
|
clockpro_clearreferencebit(pg);
|
|
pg->pqflags &= ~PQ_INITIALREF;
|
|
}
|
|
/* place at the list head */
|
|
clockpro_insert_tail(s, CLOCKPRO_COLDQ, pg);
|
|
}
|
|
}
|
|
|
|
static void
|
|
clockpro_newqrotate(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
check_sanity();
|
|
clockpro___newqrotate(s->s_newqlenmax);
|
|
check_sanity();
|
|
}
|
|
|
|
static void
|
|
clockpro_newqflush(int n)
|
|
{
|
|
|
|
check_sanity();
|
|
clockpro___newqrotate(n);
|
|
check_sanity();
|
|
}
|
|
|
|
static void
|
|
clockpro_newqflushone(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
clockpro_newqflush(
|
|
MAX(pageq_len(clockpro_queue(s, CLOCKPRO_NEWQ)) - 1, 0));
|
|
}
|
|
|
|
/*
|
|
* our "tail" is called "list-head" in the paper.
|
|
*/
|
|
|
|
static void
|
|
clockpro___enqueuetail(struct vm_page *pg)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
KASSERT(clockpro_getq(pg) == CLOCKPRO_NOQUEUE);
|
|
|
|
check_sanity();
|
|
#if !defined(USEONCE2)
|
|
clockpro_insert_tail(s, CLOCKPRO_NEWQ, pg);
|
|
clockpro_newqrotate();
|
|
#else /* !defined(USEONCE2) */
|
|
#if defined(LISTQ)
|
|
KASSERT((pg->pqflags & PQ_REFERENCED) == 0);
|
|
#endif /* defined(LISTQ) */
|
|
clockpro_insert_tail(s, CLOCKPRO_COLDQ, pg);
|
|
#endif /* !defined(USEONCE2) */
|
|
check_sanity();
|
|
}
|
|
|
|
static void
|
|
clockpro_pageenqueue(struct vm_page *pg)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
bool hot;
|
|
bool speculative = (pg->pqflags & PQ_SPECULATIVE) != 0; /* XXX */
|
|
|
|
KASSERT((~pg->pqflags & (PQ_INITIALREF|PQ_SPECULATIVE)) != 0);
|
|
KASSERT(mutex_owned(&uvm_pageqlock));
|
|
check_sanity();
|
|
KASSERT(clockpro_getq(pg) == CLOCKPRO_NOQUEUE);
|
|
s->s_npages++;
|
|
pg->pqflags &= ~(PQ_HOT|PQ_TEST);
|
|
if (speculative) {
|
|
hot = false;
|
|
PDPOL_EVCNT_INCR(speculativeenqueue);
|
|
} else {
|
|
hot = nonresident_pagelookupremove(pg);
|
|
if (hot) {
|
|
COLDTARGET_ADJ(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* consider mmap'ed file:
|
|
*
|
|
* - read-ahead enqueues a page.
|
|
*
|
|
* - on the following read-ahead hit, the fault handler activates it.
|
|
*
|
|
* - finally, the userland code which caused the above fault
|
|
* actually accesses the page. it makes its reference bit set.
|
|
*
|
|
* we want to count the above as a single access, rather than
|
|
* three accesses with short reuse distances.
|
|
*/
|
|
|
|
#if defined(USEONCE2)
|
|
pg->pqflags &= ~PQ_INITIALREF;
|
|
if (hot) {
|
|
pg->pqflags |= PQ_TEST;
|
|
}
|
|
s->s_ncold++;
|
|
clockpro_clearreferencebit(pg);
|
|
clockpro___enqueuetail(pg);
|
|
#else /* defined(USEONCE2) */
|
|
if (speculative) {
|
|
s->s_ncold++;
|
|
} else if (hot) {
|
|
pg->pqflags |= PQ_HOT;
|
|
} else {
|
|
pg->pqflags |= PQ_TEST;
|
|
s->s_ncold++;
|
|
}
|
|
clockpro___enqueuetail(pg);
|
|
#endif /* defined(USEONCE2) */
|
|
KASSERT(s->s_ncold <= s->s_npages);
|
|
}
|
|
|
|
static pageq_t *
|
|
clockpro_pagequeue(struct vm_page *pg)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
int qidx;
|
|
|
|
qidx = clockpro_getq(pg);
|
|
KASSERT(qidx != CLOCKPRO_NOQUEUE);
|
|
|
|
return clockpro_queue(s, qidx);
|
|
}
|
|
|
|
static void
|
|
clockpro_pagedequeue(struct vm_page *pg)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
pageq_t *q;
|
|
|
|
KASSERT(s->s_npages > 0);
|
|
check_sanity();
|
|
q = clockpro_pagequeue(pg);
|
|
pageq_remove(q, pg);
|
|
check_sanity();
|
|
clockpro_setq(pg, CLOCKPRO_NOQUEUE);
|
|
if ((pg->pqflags & PQ_HOT) == 0) {
|
|
KASSERT(s->s_ncold > 0);
|
|
s->s_ncold--;
|
|
}
|
|
KASSERT(s->s_npages > 0);
|
|
s->s_npages--;
|
|
check_sanity();
|
|
}
|
|
|
|
static void
|
|
clockpro_pagerequeue(struct vm_page *pg)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
int qidx;
|
|
|
|
qidx = clockpro_getq(pg);
|
|
KASSERT(qidx == CLOCKPRO_HOTQ || qidx == CLOCKPRO_COLDQ);
|
|
pageq_remove(clockpro_queue(s, qidx), pg);
|
|
check_sanity();
|
|
clockpro_setq(pg, CLOCKPRO_NOQUEUE);
|
|
|
|
clockpro___enqueuetail(pg);
|
|
}
|
|
|
|
static void
|
|
handhot_endtest(struct vm_page *pg)
|
|
{
|
|
|
|
KASSERT((pg->pqflags & PQ_HOT) == 0);
|
|
if ((pg->pqflags & PQ_TEST) != 0) {
|
|
PDPOL_EVCNT_INCR(hhotcoldtest);
|
|
COLDTARGET_ADJ(-1);
|
|
pg->pqflags &= ~PQ_TEST;
|
|
} else {
|
|
PDPOL_EVCNT_INCR(hhotcold);
|
|
}
|
|
}
|
|
|
|
static void
|
|
handhot_advance(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
struct vm_page *pg;
|
|
pageq_t *hotq;
|
|
int hotqlen;
|
|
|
|
clockpro_tune();
|
|
|
|
dump("hot called");
|
|
if (s->s_ncold >= s->s_coldtarget) {
|
|
return;
|
|
}
|
|
hotq = clockpro_queue(s, CLOCKPRO_HOTQ);
|
|
again:
|
|
pg = pageq_first(hotq);
|
|
if (pg == NULL) {
|
|
DPRINTF("%s: HHOT TAKEOVER\n", __func__);
|
|
dump("hhottakeover");
|
|
PDPOL_EVCNT_INCR(hhottakeover);
|
|
#if defined(LISTQ)
|
|
while (/* CONSTCOND */ 1) {
|
|
pageq_t *coldq = clockpro_queue(s, CLOCKPRO_COLDQ);
|
|
|
|
pg = pageq_first(coldq);
|
|
if (pg == NULL) {
|
|
clockpro_newqflushone();
|
|
pg = pageq_first(coldq);
|
|
if (pg == NULL) {
|
|
WARN("hhot: no page?\n");
|
|
return;
|
|
}
|
|
}
|
|
KASSERT(clockpro_pagequeue(pg) == coldq);
|
|
pageq_remove(coldq, pg);
|
|
check_sanity();
|
|
if ((pg->pqflags & PQ_HOT) == 0) {
|
|
handhot_endtest(pg);
|
|
clockpro_insert_tail(s, CLOCKPRO_LISTQ, pg);
|
|
} else {
|
|
clockpro_insert_head(s, CLOCKPRO_HOTQ, pg);
|
|
break;
|
|
}
|
|
}
|
|
#else /* defined(LISTQ) */
|
|
clockpro_newqflush(0); /* XXX XXX */
|
|
clockpro_switchqueue();
|
|
hotq = clockpro_queue(s, CLOCKPRO_HOTQ);
|
|
goto again;
|
|
#endif /* defined(LISTQ) */
|
|
}
|
|
|
|
KASSERT(clockpro_pagequeue(pg) == hotq);
|
|
|
|
/*
|
|
* terminate test period of nonresident pages by cycling them.
|
|
*/
|
|
|
|
cycle_target_frac += BUCKETSIZE;
|
|
hotqlen = pageq_len(hotq);
|
|
while (cycle_target_frac >= hotqlen) {
|
|
cycle_target++;
|
|
cycle_target_frac -= hotqlen;
|
|
}
|
|
|
|
if ((pg->pqflags & PQ_HOT) == 0) {
|
|
#if defined(LISTQ)
|
|
panic("cold page in hotq: %p", pg);
|
|
#else /* defined(LISTQ) */
|
|
handhot_endtest(pg);
|
|
goto next;
|
|
#endif /* defined(LISTQ) */
|
|
}
|
|
KASSERT((pg->pqflags & PQ_TEST) == 0);
|
|
KASSERT((pg->pqflags & PQ_INITIALREF) == 0);
|
|
KASSERT((pg->pqflags & PQ_SPECULATIVE) == 0);
|
|
|
|
/*
|
|
* once we met our target,
|
|
* stop at a hot page so that no cold pages in test period
|
|
* have larger recency than any hot pages.
|
|
*/
|
|
|
|
if (s->s_ncold >= s->s_coldtarget) {
|
|
dump("hot done");
|
|
return;
|
|
}
|
|
clockpro_movereferencebit(pg);
|
|
if ((pg->pqflags & PQ_REFERENCED) == 0) {
|
|
PDPOL_EVCNT_INCR(hhotunref);
|
|
uvmexp.pddeact++;
|
|
pg->pqflags &= ~PQ_HOT;
|
|
clockpro.s_ncold++;
|
|
KASSERT(s->s_ncold <= s->s_npages);
|
|
} else {
|
|
PDPOL_EVCNT_INCR(hhotref);
|
|
}
|
|
pg->pqflags &= ~PQ_REFERENCED;
|
|
#if !defined(LISTQ)
|
|
next:
|
|
#endif /* !defined(LISTQ) */
|
|
clockpro_pagerequeue(pg);
|
|
dump("hot");
|
|
goto again;
|
|
}
|
|
|
|
static struct vm_page *
|
|
handcold_advance(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
struct vm_page *pg;
|
|
|
|
for (;;) {
|
|
#if defined(LISTQ)
|
|
pageq_t *listq = clockpro_queue(s, CLOCKPRO_LISTQ);
|
|
#endif /* defined(LISTQ) */
|
|
pageq_t *coldq;
|
|
|
|
clockpro_newqrotate();
|
|
handhot_advance();
|
|
#if defined(LISTQ)
|
|
pg = pageq_first(listq);
|
|
if (pg != NULL) {
|
|
KASSERT(clockpro_getq(pg) == CLOCKPRO_LISTQ);
|
|
KASSERT((pg->pqflags & PQ_TEST) == 0);
|
|
KASSERT((pg->pqflags & PQ_HOT) == 0);
|
|
KASSERT((pg->pqflags & PQ_INITIALREF) == 0);
|
|
pageq_remove(listq, pg);
|
|
check_sanity();
|
|
clockpro_insert_head(s, CLOCKPRO_COLDQ, pg); /* XXX */
|
|
goto gotcold;
|
|
}
|
|
#endif /* defined(LISTQ) */
|
|
check_sanity();
|
|
coldq = clockpro_queue(s, CLOCKPRO_COLDQ);
|
|
pg = pageq_first(coldq);
|
|
if (pg == NULL) {
|
|
clockpro_newqflushone();
|
|
pg = pageq_first(coldq);
|
|
}
|
|
if (pg == NULL) {
|
|
DPRINTF("%s: HCOLD TAKEOVER\n", __func__);
|
|
dump("hcoldtakeover");
|
|
PDPOL_EVCNT_INCR(hcoldtakeover);
|
|
KASSERT(
|
|
pageq_len(clockpro_queue(s, CLOCKPRO_NEWQ)) == 0);
|
|
#if defined(LISTQ)
|
|
KASSERT(
|
|
pageq_len(clockpro_queue(s, CLOCKPRO_HOTQ)) == 0);
|
|
#else /* defined(LISTQ) */
|
|
clockpro_switchqueue();
|
|
coldq = clockpro_queue(s, CLOCKPRO_COLDQ);
|
|
pg = pageq_first(coldq);
|
|
#endif /* defined(LISTQ) */
|
|
}
|
|
if (pg == NULL) {
|
|
WARN("hcold: no page?\n");
|
|
return NULL;
|
|
}
|
|
KASSERT((pg->pqflags & PQ_INITIALREF) == 0);
|
|
if ((pg->pqflags & PQ_HOT) != 0) {
|
|
PDPOL_EVCNT_INCR(hcoldhot);
|
|
pageq_remove(coldq, pg);
|
|
clockpro_insert_tail(s, CLOCKPRO_HOTQ, pg);
|
|
check_sanity();
|
|
KASSERT((pg->pqflags & PQ_TEST) == 0);
|
|
uvmexp.pdscans++;
|
|
continue;
|
|
}
|
|
#if defined(LISTQ)
|
|
gotcold:
|
|
#endif /* defined(LISTQ) */
|
|
KASSERT((pg->pqflags & PQ_HOT) == 0);
|
|
uvmexp.pdscans++;
|
|
clockpro_movereferencebit(pg);
|
|
if ((pg->pqflags & PQ_SPECULATIVE) != 0) {
|
|
KASSERT((pg->pqflags & PQ_TEST) == 0);
|
|
if ((pg->pqflags & PQ_REFERENCED) != 0) {
|
|
PDPOL_EVCNT_INCR(speculativehit2);
|
|
pg->pqflags &= ~(PQ_SPECULATIVE|PQ_REFERENCED);
|
|
clockpro_pagedequeue(pg);
|
|
clockpro_pageenqueue(pg);
|
|
continue;
|
|
}
|
|
PDPOL_EVCNT_INCR(speculativemiss);
|
|
}
|
|
switch (pg->pqflags & (PQ_REFERENCED|PQ_TEST)) {
|
|
case PQ_TEST:
|
|
PDPOL_EVCNT_INCR(hcoldunreftest);
|
|
nonresident_pagerecord(pg);
|
|
goto gotit;
|
|
case 0:
|
|
PDPOL_EVCNT_INCR(hcoldunref);
|
|
gotit:
|
|
KASSERT(s->s_ncold > 0);
|
|
clockpro_pagerequeue(pg); /* XXX */
|
|
dump("cold done");
|
|
/* XXX "pg" is still in queue */
|
|
handhot_advance();
|
|
goto done;
|
|
|
|
case PQ_REFERENCED|PQ_TEST:
|
|
PDPOL_EVCNT_INCR(hcoldreftest);
|
|
s->s_ncold--;
|
|
COLDTARGET_ADJ(1);
|
|
pg->pqflags |= PQ_HOT;
|
|
pg->pqflags &= ~PQ_TEST;
|
|
break;
|
|
|
|
case PQ_REFERENCED:
|
|
PDPOL_EVCNT_INCR(hcoldref);
|
|
pg->pqflags |= PQ_TEST;
|
|
break;
|
|
}
|
|
pg->pqflags &= ~PQ_REFERENCED;
|
|
uvmexp.pdreact++;
|
|
/* move to the list head */
|
|
clockpro_pagerequeue(pg);
|
|
dump("cold");
|
|
}
|
|
done:;
|
|
return pg;
|
|
}
|
|
|
|
void
|
|
uvmpdpol_pageactivate(struct vm_page *pg)
|
|
{
|
|
|
|
if (!uvmpdpol_pageisqueued_p(pg)) {
|
|
KASSERT((pg->pqflags & PQ_SPECULATIVE) == 0);
|
|
pg->pqflags |= PQ_INITIALREF;
|
|
clockpro_pageenqueue(pg);
|
|
} else if ((pg->pqflags & PQ_SPECULATIVE)) {
|
|
PDPOL_EVCNT_INCR(speculativehit1);
|
|
pg->pqflags &= ~PQ_SPECULATIVE;
|
|
pg->pqflags |= PQ_INITIALREF;
|
|
clockpro_pagedequeue(pg);
|
|
clockpro_pageenqueue(pg);
|
|
}
|
|
pg->pqflags |= PQ_REFERENCED;
|
|
}
|
|
|
|
void
|
|
uvmpdpol_pagedeactivate(struct vm_page *pg)
|
|
{
|
|
|
|
clockpro_clearreferencebit(pg);
|
|
}
|
|
|
|
void
|
|
uvmpdpol_pagedequeue(struct vm_page *pg)
|
|
{
|
|
|
|
if (!uvmpdpol_pageisqueued_p(pg)) {
|
|
return;
|
|
}
|
|
clockpro_pagedequeue(pg);
|
|
pg->pqflags &= ~(PQ_INITIALREF|PQ_SPECULATIVE);
|
|
}
|
|
|
|
void
|
|
uvmpdpol_pageenqueue(struct vm_page *pg)
|
|
{
|
|
|
|
#if 1
|
|
if (uvmpdpol_pageisqueued_p(pg)) {
|
|
return;
|
|
}
|
|
clockpro_clearreferencebit(pg);
|
|
pg->pqflags |= PQ_SPECULATIVE;
|
|
clockpro_pageenqueue(pg);
|
|
#else
|
|
uvmpdpol_pageactivate(pg);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
uvmpdpol_anfree(struct vm_anon *an)
|
|
{
|
|
|
|
KASSERT(an->an_page == NULL);
|
|
if (nonresident_lookupremove((objid_t)an, 0)) {
|
|
PDPOL_EVCNT_INCR(nresanonfree);
|
|
}
|
|
}
|
|
|
|
void
|
|
uvmpdpol_init(void)
|
|
{
|
|
|
|
clockpro_init();
|
|
}
|
|
|
|
void
|
|
uvmpdpol_reinit(void)
|
|
{
|
|
|
|
clockpro_reinit();
|
|
}
|
|
|
|
void
|
|
uvmpdpol_estimatepageable(int *active, int *inactive)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
if (active) {
|
|
*active = s->s_npages - s->s_ncold;
|
|
}
|
|
if (inactive) {
|
|
*inactive = s->s_ncold;
|
|
}
|
|
}
|
|
|
|
bool
|
|
uvmpdpol_pageisqueued_p(struct vm_page *pg)
|
|
{
|
|
|
|
return clockpro_getq(pg) != CLOCKPRO_NOQUEUE;
|
|
}
|
|
|
|
void
|
|
uvmpdpol_scaninit(void)
|
|
{
|
|
struct clockpro_scanstate * const ss = &scanstate;
|
|
|
|
ss->ss_nscanned = 0;
|
|
}
|
|
|
|
struct vm_page *
|
|
uvmpdpol_selectvictim(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
struct clockpro_scanstate * const ss = &scanstate;
|
|
struct vm_page *pg;
|
|
|
|
if (ss->ss_nscanned > s->s_npages) {
|
|
DPRINTF("scan too much\n");
|
|
return NULL;
|
|
}
|
|
pg = handcold_advance();
|
|
ss->ss_nscanned++;
|
|
return pg;
|
|
}
|
|
|
|
static void
|
|
clockpro_dropswap(pageq_t *q, int *todo)
|
|
{
|
|
struct vm_page *pg;
|
|
|
|
TAILQ_FOREACH_REVERSE(pg, &q->q_q, pglist, pageq.queue) {
|
|
if (*todo <= 0) {
|
|
break;
|
|
}
|
|
if ((pg->pqflags & PQ_HOT) == 0) {
|
|
continue;
|
|
}
|
|
if ((pg->pqflags & PQ_SWAPBACKED) == 0) {
|
|
continue;
|
|
}
|
|
if (uvmpd_trydropswap(pg)) {
|
|
(*todo)--;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
uvmpdpol_balancequeue(int swap_shortage)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
int todo = swap_shortage;
|
|
|
|
if (todo == 0) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* reclaim swap slots from hot pages
|
|
*/
|
|
|
|
DPRINTF("%s: swap_shortage=%d\n", __func__, swap_shortage);
|
|
|
|
clockpro_dropswap(clockpro_queue(s, CLOCKPRO_NEWQ), &todo);
|
|
clockpro_dropswap(clockpro_queue(s, CLOCKPRO_COLDQ), &todo);
|
|
clockpro_dropswap(clockpro_queue(s, CLOCKPRO_HOTQ), &todo);
|
|
|
|
DPRINTF("%s: done=%d\n", __func__, swap_shortage - todo);
|
|
}
|
|
|
|
bool
|
|
uvmpdpol_needsscan_p(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
if (s->s_ncold < s->s_coldtarget) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
uvmpdpol_tune(void)
|
|
{
|
|
|
|
clockpro_tune();
|
|
}
|
|
|
|
#if !defined(PDSIM)
|
|
|
|
#include <sys/sysctl.h> /* XXX SYSCTL_DESCR */
|
|
|
|
void
|
|
uvmpdpol_sysctlsetup(void)
|
|
{
|
|
#if !defined(ADAPTIVE)
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
uvm_pctparam_createsysctlnode(&s->s_coldtargetpct, "coldtargetpct",
|
|
SYSCTL_DESCR("Percentage cold target queue of the entire queue"));
|
|
#endif /* !defined(ADAPTIVE) */
|
|
}
|
|
|
|
#endif /* !defined(PDSIM) */
|
|
|
|
#if defined(DDB)
|
|
|
|
void clockpro_dump(void);
|
|
|
|
void
|
|
clockpro_dump(void)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
struct vm_page *pg;
|
|
int ncold, nhot, ntest, nspeculative, ninitialref, nref;
|
|
int newqlen, coldqlen, hotqlen, listqlen;
|
|
|
|
newqlen = coldqlen = hotqlen = listqlen = 0;
|
|
printf("npages=%d, ncold=%d, coldtarget=%d, newqlenmax=%d\n",
|
|
s->s_npages, s->s_ncold, s->s_coldtarget, s->s_newqlenmax);
|
|
|
|
#define INITCOUNT() \
|
|
ncold = nhot = ntest = nspeculative = ninitialref = nref = 0
|
|
|
|
#define COUNT(pg) \
|
|
if ((pg->pqflags & PQ_HOT) != 0) { \
|
|
nhot++; \
|
|
} else { \
|
|
ncold++; \
|
|
if ((pg->pqflags & PQ_TEST) != 0) { \
|
|
ntest++; \
|
|
} \
|
|
if ((pg->pqflags & PQ_SPECULATIVE) != 0) { \
|
|
nspeculative++; \
|
|
} \
|
|
if ((pg->pqflags & PQ_INITIALREF) != 0) { \
|
|
ninitialref++; \
|
|
} else if ((pg->pqflags & PQ_REFERENCED) != 0 || \
|
|
pmap_is_referenced(pg)) { \
|
|
nref++; \
|
|
} \
|
|
}
|
|
|
|
#define PRINTCOUNT(name) \
|
|
printf("%s hot=%d, cold=%d, test=%d, speculative=%d, initialref=%d, " \
|
|
"nref=%d\n", \
|
|
(name), nhot, ncold, ntest, nspeculative, ninitialref, nref)
|
|
|
|
INITCOUNT();
|
|
TAILQ_FOREACH(pg, &clockpro_queue(s, CLOCKPRO_NEWQ)->q_q, pageq.queue) {
|
|
if (clockpro_getq(pg) != CLOCKPRO_NEWQ) {
|
|
printf("newq corrupt %p\n", pg);
|
|
}
|
|
COUNT(pg)
|
|
newqlen++;
|
|
}
|
|
PRINTCOUNT("newq");
|
|
|
|
INITCOUNT();
|
|
TAILQ_FOREACH(pg, &clockpro_queue(s, CLOCKPRO_COLDQ)->q_q, pageq.queue) {
|
|
if (clockpro_getq(pg) != CLOCKPRO_COLDQ) {
|
|
printf("coldq corrupt %p\n", pg);
|
|
}
|
|
COUNT(pg)
|
|
coldqlen++;
|
|
}
|
|
PRINTCOUNT("coldq");
|
|
|
|
INITCOUNT();
|
|
TAILQ_FOREACH(pg, &clockpro_queue(s, CLOCKPRO_HOTQ)->q_q, pageq.queue) {
|
|
if (clockpro_getq(pg) != CLOCKPRO_HOTQ) {
|
|
printf("hotq corrupt %p\n", pg);
|
|
}
|
|
#if defined(LISTQ)
|
|
if ((pg->pqflags & PQ_HOT) == 0) {
|
|
printf("cold page in hotq: %p\n", pg);
|
|
}
|
|
#endif /* defined(LISTQ) */
|
|
COUNT(pg)
|
|
hotqlen++;
|
|
}
|
|
PRINTCOUNT("hotq");
|
|
|
|
INITCOUNT();
|
|
TAILQ_FOREACH(pg, &clockpro_queue(s, CLOCKPRO_LISTQ)->q_q, pageq.queue) {
|
|
#if !defined(LISTQ)
|
|
printf("listq %p\n", pg);
|
|
#endif /* !defined(LISTQ) */
|
|
if (clockpro_getq(pg) != CLOCKPRO_LISTQ) {
|
|
printf("listq corrupt %p\n", pg);
|
|
}
|
|
COUNT(pg)
|
|
listqlen++;
|
|
}
|
|
PRINTCOUNT("listq");
|
|
|
|
printf("newqlen=%d/%d, coldqlen=%d/%d, hotqlen=%d/%d, listqlen=%d/%d\n",
|
|
newqlen, pageq_len(clockpro_queue(s, CLOCKPRO_NEWQ)),
|
|
coldqlen, pageq_len(clockpro_queue(s, CLOCKPRO_COLDQ)),
|
|
hotqlen, pageq_len(clockpro_queue(s, CLOCKPRO_HOTQ)),
|
|
listqlen, pageq_len(clockpro_queue(s, CLOCKPRO_LISTQ)));
|
|
}
|
|
|
|
#endif /* defined(DDB) */
|
|
|
|
#if defined(PDSIM)
|
|
#if defined(DEBUG)
|
|
static void
|
|
pdsim_dumpq(int qidx)
|
|
{
|
|
struct clockpro_state * const s = &clockpro;
|
|
pageq_t *q = clockpro_queue(s, qidx);
|
|
struct vm_page *pg;
|
|
|
|
TAILQ_FOREACH(pg, &q->q_q, pageq.queue) {
|
|
DPRINTF(" %" PRIu64 "%s%s%s%s%s%s",
|
|
pg->offset >> PAGE_SHIFT,
|
|
(pg->pqflags & PQ_HOT) ? "H" : "",
|
|
(pg->pqflags & PQ_TEST) ? "T" : "",
|
|
(pg->pqflags & PQ_REFERENCED) ? "R" : "",
|
|
pmap_is_referenced(pg) ? "r" : "",
|
|
(pg->pqflags & PQ_INITIALREF) ? "I" : "",
|
|
(pg->pqflags & PQ_SPECULATIVE) ? "S" : ""
|
|
);
|
|
}
|
|
}
|
|
#endif /* defined(DEBUG) */
|
|
|
|
void
|
|
pdsim_dump(const char *id)
|
|
{
|
|
#if defined(DEBUG)
|
|
struct clockpro_state * const s = &clockpro;
|
|
|
|
DPRINTF(" %s L(", id);
|
|
pdsim_dumpq(CLOCKPRO_LISTQ);
|
|
DPRINTF(" ) H(");
|
|
pdsim_dumpq(CLOCKPRO_HOTQ);
|
|
DPRINTF(" ) C(");
|
|
pdsim_dumpq(CLOCKPRO_COLDQ);
|
|
DPRINTF(" ) N(");
|
|
pdsim_dumpq(CLOCKPRO_NEWQ);
|
|
DPRINTF(" ) ncold=%d/%d, coldadj=%d\n",
|
|
s->s_ncold, s->s_coldtarget, coldadj);
|
|
#endif /* defined(DEBUG) */
|
|
}
|
|
#endif /* defined(PDSIM) */
|