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implement pmap_wired_count().

This commit is contained in:
chs 2001-09-23 09:01:13 +00:00
parent 6f081befa2
commit 59c12af6f5
2 changed files with 37 additions and 3 deletions
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5
sys/arch/sparc64/include/pmap.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.h,v 1.19 2001/09/10 21:19:26 chris Exp $ */
/* $NetBSD: pmap.h,v 1.20 2001/09/23 09:01:13 chs Exp $ */
/*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -157,8 +157,9 @@ extern struct pmap kernel_pmap_;
#define pmap_kernel() (&kernel_pmap_)
int pmap_count_res __P((pmap_t pmap));
/* int pmap_change_wiring __P((pmap_t pm, vaddr_t va, boolean_t wired)); */
int pmap_count_wired __P((pmap_t pmap));
#define pmap_resident_count(pm) pmap_count_res((pm))
#define pmap_wired_count(pm) pmap_count_wired((pm))
#define pmap_from_phys_address(x,f) ((x)>>PGSHIFT)
#define pmap_phys_address(x) ((((paddr_t)(x))<<PGSHIFT)|PMAP_NC)
#define pmap_update(pmap) /* nothing (yet) */

35
sys/arch/sparc64/sparc64/pmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.111 2001/09/21 03:02:32 eeh Exp $ */
/* $NetBSD: pmap.c,v 1.112 2001/09/23 09:01:13 chs Exp $ */
#undef NO_VCACHE /* Don't forget the locked TLB in dostart */
#define HWREF
/*
@ -3349,6 +3349,39 @@ pmap_count_res(pm)
return n;
}
/*
* count wired pages in pmap -- this can be slow.
*/
int
pmap_count_wired(pm)
pmap_t pm;
{
int i, j, k, n, s;
paddr_t *pdir, *ptbl;
/* Almost the same as pmap_collect() */
/* Don't want one of these pages reused while we're reading it. */
s = splvm();
simple_lock(&pm->pm_lock);
n = 0;
for (i = 0; i < STSZ; i++) {
if ((pdir = (paddr_t *)(u_long)ldxa((vaddr_t)&pm->pm_segs[i], ASI_PHYS_CACHED))) {
for (k = 0; k < PDSZ; k++) {
if ((ptbl = (paddr_t *)(u_long)ldxa((vaddr_t)&pdir[k], ASI_PHYS_CACHED))) {
for (j = 0; j < PTSZ; j++) {
int64_t data = (int64_t)ldxa((vaddr_t)&ptbl[j], ASI_PHYS_CACHED);
if (data & TLB_TSB_LOCK)
n++;
}
}
}
}
}
simple_unlock(&pm->pm_lock);
splx(s);
return n;
}
/*
* Allocate a context. If necessary, steal one from someone else.
* Changes hardware context number and loads segment map.